Document:

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                                                                     Exhibit 4.1

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                             POLYMEDICA CORPORATION

           1.00% CONVERTIBLE SUBORDINATED NOTES DUE SEPTEMBER 15, 2011

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                                    INDENTURE
                         DATED AS OF SEPTEMBER 19, 2006

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                       LASALLE BANK NATIONAL ASSOCIATION,
                                   AS TRUSTEE

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                                TABLE OF CONTENTS

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                                    ARTICLE 1
                   DEFINITIONS AND INCORPORATION BY REFERENCE

Section 1.01.  Definitions...............................................      1
Section 1.02.  Other Definitions.........................................      8
Section 1.03.  Trust Indenture Act Provisions............................      9
Section 1.04.  Rules of Construction.....................................     10

                                    ARTICLE 2
                                 THE SECURITIES

Section 2.01.  Form and Dating...........................................     10
Section 2.02.  Execution and Authentication..............................     12
Section 2.03.  Registrar, Paying Agent and Conversion Agent..............     12
Section 2.04.  Paying Agent to Hold Money in Trust.......................     13
Section 2.05.  Securityholder Lists......................................     13
Section 2.06.  Transfer and Exchange.....................................     13
Section 2.07.  Replacement Securities....................................     15
Section 2.08.  Outstanding Securities....................................     16
Section 2.09.  Treasury Securities.......................................     16
Section 2.10.  Temporary Securities......................................     16
Section 2.11.  Cancellation..............................................     16
Section 2.12.  Legends; Additional Transfer Requirements.................     17
Section 2.13.  Cusip or ISIN Numbers.....................................     21
Section 2.14.  Form of Certificate To Be Delivered in Connection with
               Transfers to Institutional Accredited Investors...........     21
Section 2.15.  Issuance, Transfer and Exchange of Common Stock Issuable
               Upon Conversion of the Securities.........................     23
Section 2.16.  Additional Securities.....................................     23
Section 2.17.  Liquidated Damages Under Any Registration Rights
               Agreement.................................................     24

                                    ARTICLE 3
                 PURCHASES OF SECURITIES UPON FUNDAMENTAL CHANGE

Section 3.01.  Purchase of Securities at Option of the Holder Upon
               Fundamental Change........................................     25
Section 3.02.  Effect of Fundamental Change Purchase Notice..............     28
Section 3.03.  Deposit of Fundamental Change Purchase Price..............     28
Section 3.04.  Securities Purchased in Part..............................     29
Section 3.05.  Compliance with Securities Laws Upon Purchase of
               Securities................................................     29

                                    ARTICLE 4
                    PAYMENT OF INTEREST AND ADDITIONAL SHARES

Section 4.01.  Interest Payments.........................................     29
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Section 4.02.  Additional Shares.........................................     30
Section 4.03.  Public Acquirer Change in Control.........................     31

                                    ARTICLE 5
                                   CONVERSION

Section 5.01.  Conversion Privilege......................................     32
Section 5.02.  Conversion Procedure......................................     35
Section 5.03.  Fractional Shares.........................................     36
Section 5.04.  Taxes on Conversion.......................................     36
Section 5.05.  Payment Upon Conversion...................................     36
Section 5.06.  Adjustment of Conversion Price............................     38
Section 5.07.  No Adjustment.............................................     44
Section 5.08.  Adjustment for Tax Purposes...............................     44
Section 5.09.  Temporary Reduction of Conversion Price...................     44
Section 5.10.  Notice of Certain Transactions............................     45
Section 5.11.  Effect of Reclassification, Consolidation, Merger or Sale
               on Conversion Privilege...................................     45
Section 5.12.  Trustee's Disclaimer......................................     46
Section 5.13.  Limitation on Adjustments.................................     47

                                    ARTICLE 6
                                  SUBORDINATION

Section 6.01.  Agreement of Subordination................................     47
Section 6.02.  Payments to Holders.......................................     47
Section 6.03.  Subrogation of Securities.................................     50
Section 6.04.  Authorization to Effect Subordination.....................     51
Section 6.05.  Notice to Trustee.........................................     51
Section 6.06.  Trustee's Relation to Senior Indebtedness.................     52
Section 6.07.  No Impairment of Subordination............................     52
Section 6.08.  Certain Conversions Deemed Payment........................     53
Section 6.09.  Article Applicable to Paying Agents.......................     53
Section 6.10.  Senior Indebtedness Entitled to Rely......................     53

                                    ARTICLE 7
                                    COVENANTS

Section 7.01.  Payment of Securities.....................................     53
Section 7.02.  SEC Reports...............................................     54
Section 7.03.  Maintenance of Listing....................................     54
Section 7.04.  Compliance Certificates...................................     54
Section 7.05.  Liquidated Damages Notice.................................     55
Section 7.06.  Rule 144A Information Requirements........................     55
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Section 7.07.  Further Instruments and Acts..............................     55
Section 7.08.  Maintenance of Corporate Existence........................     55
Section 7.09.  Stay, Extension and Usury Laws............................     55

                                    ARTICLE 8
              CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE

Section 8.01.  Company May Consolidate, etc., only on Certain Terms......     56
Section 8.02.  Successor Substituted.....................................     56

                                    ARTICLE 9
                              DEFAULT AND REMEDIES

Section 9.01.  Events of Default.........................................     57
Section 9.02.  Acceleration..............................................     59
Section 9.03.  Other Remedies............................................     59
Section 9.04.  Waiver of Defaults and Events of Default..................     59
Section 9.05.  Control by Majority.......................................     60
Section 9.06.  Limitations on Suits......................................     60
Section 9.07.  Rights of Holders to Receive Payment and to Convert.......     60
Section 9.08.  Collection Suit by Trustee................................     61
Section 9.09.  Trustee May File Proofs of Claim..........................     61
Section 9.10.  Priorities................................................     61
Section 9.11.  Undertaking for Costs.....................................     62

                                   ARTICLE 10
                                     TRUSTEE

Section 10.01. Duties of Trustee.........................................     62
Section 10.02. Rights of Trustee.........................................     63
Section 10.03. Individual Rights of Trustee..............................     64
Section 10.04. Trustee's Disclaimer......................................     64
Section 10.05. Notice of Default or Events of Default....................     64
Section 10.06. Reports by Trustee to Holders.............................     65
Section 10.07. Compensation and Indemnity................................     65
Section 10.08. Replacement of Trustee....................................     66
Section 10.09. Successor Trustee by Merger, etc..........................     67
Section 10.10. Eligibility; Disqualification.............................     67
Section 10.11. Preferential Collection of Claims Against Company.........     67

                                   ARTICLE 11
                           SATISFACTION AND DISCHARGE

Section 11.01. Satisfaction and Discharge................................     67
Section 11.02. Application of Trust Money................................     68
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Section 11.03. Repayment to Company......................................     68
Section 11.04. Reinstatement.............................................     69

                                   ARTICLE 12
                       AMENDMENTS, SUPPLEMENTS AND WAIVERS

Section 12.01. Without Consent of Holders................................     69
Section 12.02. With Consent of Holders...................................     69
Section 12.03. Compliance with Trust Indenture Act.......................     71
Section 12.04. Revocation and Effect of Consents.........................     71
Section 12.05. Notation on or Exchange of Securities.....................     71
Section 12.06. Trustee to Sign Amendments, etc...........................     71
Section 12.07. Effect of Supplemental Indentures.........................     71

                                   ARTICLE 13
                                  MISCELLANEOUS

Section 13.01. Trust Indenture Act Controls..............................     72
Section 13.02. Notices...................................................     72
Section 13.03. Communications by Holders with Other Holders..............     73
Section 13.04. Certificate and Opinion as to Conditions Precedent........     73
Section 13.05. Record Date for Vote or Consent of Securityholders........     73
Section 13.06. Rules by Trustee, Paying Agent, Registrar and
               Conversion Agent..........................................     74
Section 13.07. Legal Holidays............................................     74
Section 13.08. Governing Law.............................................     74
Section 13.09. No Adverse Interpretation of Other Agreements.............     74
Section 13.10. No Recourse against Others................................     74
Section 13.11. Successors................................................     74
Section 13.12. Multiple Counterparts.....................................     74
Section 13.13. Separability..............................................     75
Section 13.14. Table of Contents, Headings, etc..........................     75
Section 13.15. Qualification of Indenture................................     75

Schedule 4.02. Additional Shares Table...................................    S-1

Exhibit A. Form of Security..............................................    A-1
Exhibit B. Form of Transfer Certificate for Transfer of
           Restricted Common Stock.......................................    B-1
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                              CROSS-REFERENCE TABLE

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  TIA                                                              INDENTURE
SECTION                                                             SECTION
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<S>                                                            <C>
Section 310(a)(1)...........................................   10.10
        (a)(2)..............................................   10.10
        (a)(3)..............................................   N.A.**
        (a)(4)..............................................   N.A.
        (a)(5)..............................................   10.10
        (b).................................................   10.08; 10.10
        (c).................................................   N.A.
Section 311(a)..............................................   10.11
        (b).................................................   10.11
        (c).................................................   N.A.
Section 312(a)..............................................   2.05
        (b).................................................   13.03
        (c).................................................   13.03
Section 313(a)..............................................   10.06
        (b)(1)..............................................   N.A.
        (b)(2)..............................................   10.06
        (c).................................................   10.06; 13.02
        (d).................................................   10.06
Section 314(a)..............................................   7.02; 7.07; 13.02
        (b).................................................   N.A.
        (c)(1)..............................................   13.04(a)
        (c)(2)..............................................   13.04(a)
        (c)(3)..............................................   N.A.
        (d).................................................   N.A.
        (e).................................................   13.04(b)
        (f).................................................   N.A.
Section 315(a)..............................................   10.01(b)
        (b).................................................   10.05; 13.02
        (c).................................................   10.01(a)
        (d).................................................   10.01(c)
        (e).................................................   9.11
Section 316(a)(last sentence)...............................   2.09
        (a)(1)(A)...........................................   9.05
        (a)(1)(B)...........................................   9.04
        (a)(2)..............................................   N.A.
        (b).................................................   9.07
        (c).................................................   13.05
Section 317(a)(1)...........................................   9.08
        (a)(2)..............................................   9.09
        (b).................................................   2.04
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*    This Cross-Reference Table shall not, for any purpose, be deemed a part of
     this Indenture.

**   N.A. means Not Applicable.

                                       -v-
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     THIS INDENTURE, dated as of September 19, 2006, is between PolyMedica
Corporation, a corporation duly organized under the laws of the Commonwealth of
Massachusetts (the "COMPANY"), and LaSalle Bank National Association, a national
banking association organized and existing under the laws of the United States,
as Trustee (the "TRUSTEE").

     In consideration of the premises and the acquisition of the Securities by
the Holders thereof, both parties agree as follows for the benefit of the other
and for the equal and ratable benefit of the registered Holders of the
Securities.

              ARTICLE 1 DEFINITIONS AND INCORPORATION BY REFERENCE

     Section 1.01. Definitions.

     "ACQUISITION VALUE" of the Common Stock in connection with any Public
Acquirer Change in Control means, for each Trading Day in the Valuation Period,
the value of the consideration paid per share of Common Stock in connection with
such Public Acquirer Change in Control, (i) for any Cash, 100% of the amount of
such Cash; (ii) for any Acquirer Common Stock, 100% of the closing sale price of
such Acquirer Common Stock on each such Trading Day; and (iii) for any other
securities, assets or property, 102% of the fair market value of such security,
asset or property on each such Trading Day, as determined by two independent
nationally recognized investment banks selected by the Trustee for this purpose.

     "AFFILIATE" means, with respect to any specified person, any other person
directly or indirectly controlling or controlled by or under direct or indirect
common control with such specified person. For the purposes of this definition,
"control" when used with respect to any person means the power to direct the
management and policies of such person, directly or indirectly, whether through
the ownership of voting securities, by contract or otherwise; and the terms
"controlling" and "controlled" have meanings correlative to the foregoing.

     "AGENT" means any Registrar, Paying Agent or Conversion Agent.

     "APPLICABLE PROCEDURES" means, with respect to any transfer or exchange of
beneficial ownership interests in a Global Security, the rules and procedures of
the Depositary, in each case to the extent applicable to such transfer or
exchange.

     "BOARD OF DIRECTORS" means either the board of directors of the Company or
any committee of the Board of Directors specifically authorized to act for it
with respect to this Indenture.

     "BUSINESS DAY" means each day that is not a Legal Holiday.

     "CAPITAL STOCK" of any Person means any and all shares, interests, rights
to purchase, warrants, options, participations or other equivalents of or
interests in (however designated) equity of such Person, but excluding any debt
securities convertible into such equity.

     "CASH" or "CASH" means such coin or currency of the United States as at any
time of payment is legal tender for the payment of public and private debts.

                                       -1-

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     "CERTIFICATED SECURITY" means a Security that is in substantially the form
attached hereto as Exhibit A and that does not include the information or the
schedule called for by footnotes 1, 3 and 4 thereof.

     "CLOSING SALE PRICE" of the Common Stock means, as of any date of
determination, the closing per share sale price (or, if no such closing sale
price is reported on such day, the average of the bid and asked prices or, if
more than one in either case, the average of the average bid and the average
asked prices) at 4:00 p.m., New York time, as reported in composite transactions
for the principal U.S. securities exchange on which the Common Stock is traded
or, if the Common Stock is not listed on a U.S. national or regional securities
exchange, as reported on the NASDAQ System or by the National Quotation Bureau
Incorporated.

     "COMMON STOCK" means the common stock of the Company, $0.01 par value, as
it exists on the date of this Indenture and any shares of any class or classes
of capital stock of the Company resulting from any reclassification or
reclassifications thereof and which have no preference in respect of dividends
or of amounts payable in the event of any voluntary or involuntary liquidation,
dissolution or winding-up of the Company and which are not subject to redemption
by the Company; provided, however, that, if at any time there shall be more than
one such resulting class, the shares of each such class then so issuable on
conversion of Securities shall be substantially in the proportion which the
total number of shares of such class resulting from all such reclassifications
bears to the total number of shares of all such classes resulting from all such
reclassifications.

     "COMPANY" means the party named as such in the first paragraph of this
Indenture until a successor replaces it pursuant to the applicable provisions of
this Indenture, and thereafter "Company" shall mean such successor.

     "CONTINUING DIRECTORS" means, as of any date of determination, any member
of the Board of Directors who (a) was a member of the Board of Directors as of
the date hereof or (b) was nominated for election or elected to the Board of
Directors with the approval of a majority of the Continuing Directors who were
members of the Board of Directors at the time of such nomination or election.

     "CONVERSION RATE" means, as of any date of determination, an amount equal
to $1,000 divided by the then applicable Conversion Price on such date. As of
the date hereof and subject to adjustment pursuant to Section 5.06, the
Conversion Rate with respect to the Securities is approximately 20.8756 shares
of Common Stock, rounded to the nearest 1/10,000th of a share, for each $1,000
principal amount of securities.

     "CONVERSION VALUE" of a Security means, as of any date of determination,
the product of the Closing Sale Price of the Common Stock on such date
multiplied by the then current Conversion Rate of such Security on such date.

     "CORPORATE TRUST OFFICE" means the office of the Trustee at which at any
time the trust created by this Indenture shall be administered, which office at
the date of the execution of this Indenture is located at 135 South LaSalle
Street, Suite 1560, Chicago, Illinois 60603,

                                       -2-

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Attention: Corporate Trust Services Division, or at any other time at such other
address as the Trustee may designate from time to time by notice to the Company.

     "DEFAULT" or "DEFAULT" means any event which is or, after notice or passage
of time or both, would be an Event of Default.

     "DESIGNATED SENIOR INDEBTEDNESS" means any particular Senior Indebtedness
of the Company in which the instrument creating or evidencing the same or the
assumption or guarantee thereof, or any related agreements or documents to which
the Company is a party, expressly provides that such Senior Indebtedness shall
be "DESIGNATED SENIOR INDEBTEDNESS" for purposes of this Indenture (provided
that such instrument, agreement or other document may place limitations and
conditions on the right of such Senior Indebtedness to exercise the rights of
Designated Senior Indebtedness). If any payment made to any holder of any
Designated Senior Indebtedness or its Representative with respect to such
Designated Senior Indebtedness is rescinded or must otherwise be returned by
such holder or Representative upon the insolvency, bankruptcy or reorganization
of the Company or otherwise, the reinstated Indebtedness of the Company arising
as a result of such rescission or return shall constitute Designated Senior
Indebtedness effective as of the date of such rescission or return.

     "EXCHANGE ACT" means the Securities Exchange Act of 1934, as amended, and
the rules and regulations promulgated thereunder, as in effect from time to
time.

     "FINAL MATURITY DATE" means September 15, 2011.

     "GAAP" means generally accepted accounting principles in the United States
of America as in effect as of the date of this Indenture, including those set
forth in (1) the opinions and pronouncements of the Accounting Principles Board
of the American Institute of Certified Public Accountants, (2) the statements
and pronouncements of the Financial Accounting Standards Board, (3) such other
statements by such other entity as approved by a significant segment of the
accounting profession and (4) the rules and regulations of the SEC governing the
inclusion of financial statements (including pro forma financial statements) in
registration statements filed under the Securities Act and periodic reports
required to be filed pursuant to Section 13 of the Exchange Act, including
opinions and pronouncements in staff accounting bulletins and other official
written statements from the accounting staff of the SEC expressing the views of
the SEC therein.

     "GLOBAL SECURITY" means a permanent Global Security that is in
substantially the form attached hereto as Exhibit A and that includes the
information and schedule called for by footnotes 1, 3 and 4 thereof and which is
deposited with the Depositary or its custodian and registered in the name of the
Depositary or its nominee.

     "HOLDER" or "SECURITYHOLDER" means the person in whose name a Security is
registered on the Primary Registrar's books.

     "IAI" means institutional accredited investors (as defined in Rules
501(a)(1), (2), (3) and (7) under the Securities Act) who are not QIBs.

                                      -3-

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     "INDEBTEDNESS" means, with respect to any Person, without duplication, (a)
all indebtedness, obligations and other liabilities (contingent or otherwise) of
such Person (i) for borrowed money (including obligations of such Person in
respect of overdrafts, foreign exchange contracts, currency exchange agreements,
interest rate protection agreements and any loans or advances from banks,
whether or not evidenced by notes or similar instruments) or (ii) evidenced by
credit or loan agreements, bonds, debentures, notes or similar instruments
(whether or not the recourse of the lender is to the whole of the assets of such
Person or to only a portion thereof) (other than any accounts payable or other
accrued current liability or obligation incurred in the ordinary course of
business in connection with the obtaining of materials or services), (b) all
reimbursement obligations and other liabilities (contingent or otherwise) of
such Person with respect to letters of credit, bank guarantees or bankers'
acceptances, (c) all obligations and liabilities (contingent or otherwise) of
such Person (i) in respect of leases of such Person required, in conformity with
GAAP, to be accounted for as capitalized lease obligations on the balance sheet
of such Person, or (ii) under any lease or related document (including a
purchase agreement, conditional sale or other title retention agreement) in
connection with the lease of real property or improvements thereon (or any
personal property included as part of any such lease) which provides that such
Person is contractually obligated to purchase or cause a third party to purchase
the leased property or pay an agreed upon residual value of the leased property
to the lessor (whether or not such lease transaction is characterized as an
operating lease or a capitalized lease in accordance with GAAP), (d) all
obligations (contingent or otherwise) of such Person with respect to any
interest rate or other swap, cap, floor or collar agreement, hedge agreement,
forward contract or other similar instrument or agreement or foreign currency
hedge, exchange, purchase or similar instrument or agreement; (e) all direct or
indirect guaranties, agreements to be jointly liable or similar agreements by
such Person in respect of, and obligations or liabilities of such Person to
purchase or otherwise acquire or otherwise assure a creditor against loss in
respect of, indebtedness, obligations or liabilities of another Person of the
kind described in clauses (a) through (d), and (f) any and all deferrals,
renewals, extensions, refinancings and refundings of, or amendments,
modifications or supplements to, any indebtedness, obligation or liability of
the kind described in clauses (a) through (e).

     "INDENTURE" means this Indenture as amended or supplemented from time to
time pursuant to the terms of this Indenture.

     "INITIAL PURCHASERS" shall mean Deutsche Bank Securities Inc., Banc of
America Securities LLC, Wachovia Capital Markets, LLC, SunTrust Capital Markets,
Inc. and KeyBanc Capital Markets, a division of McDonald Investments Inc.

     "INSTRUMENT" means any indebtedness under any bond, debenture, note or
other evidence of indebtedness for money borrowed by the Company or any
Significant Subsidiary (all or substantially all of the outstanding voting
securities of which are owned, directly or indirectly, by the Company) or under
any mortgage, indenture or instrument under which there may be issued or by
which there may be secured or evidenced any indebtedness for money borrowed by
the Company or any Significant Subsidiary (all or substantially all of the
outstanding voting securities of which are owned, directly or indirectly, by the
Company).

     "INTEREST", in respect of the Securities, unless the context otherwise
requires, refers to interest payable on the Securities, including Liquidated
Damages, if any.

                                      -4-

<PAGE>

     "LIQUIDATED DAMAGES" has the meaning set forth in any Registration Rights
Agreement, including the Registration Rights Agreement dated September 19, 2006
between the Company and the Initial Purchasers.

     "MARKET DISRUPTION EVENT" means the occurrence or existence for more than
one half hour period in the aggregate on any scheduled Trading Day for the
Common Stock of any suspension or limitation imposed on trading, by reason of
movements in price exceeding limits permitted by NASDAQ or otherwise, in the
Common Stock or in any options, contracts or future contracts relating to the
Common Stock, and such suspension or limitation occurs or exists at any time
before 1:00 p.m. (New York City time) on such day.

     "NASDAQ" means The NASDAQ Global Select Market.

     "OFFICER" means the Chairman or any Co-Chairman of the Board, any Vice
Chairman of the Board, the Chief Executive Officer, the President, any Vice
President, the Chief Financial Officer, the Controller, the Secretary or any
Assistant Controller or Assistant Secretary of the Company.

     "OFFICERS' CERTIFICATE" means a certificate signed by two Officers;
provided, however, that, for purposes of Section 5.11 and 7.04, "Officers'
Certificate" means a certificate signed by the principal executive officer,
principal financial officer or principal accounting officer of the Company and
by one other Officer.

     "OPINION OF COUNSEL" means a written opinion from legal counsel. The
counsel may be an employee of or counsel to the Company or the Trustee.

     "PERSON" or "PERSON" means any individual, corporation, partnership,
limited liability company, joint venture, association, joint-stock company,
trust, unincorporated organization, government or any agency or political
subdivision thereof or any other entity.

     "PRINCIPAL" or "PRINCIPAL" of a debt security, including the Securities,
means the principal of the security plus, when appropriate, the premium, if any,
on the security.

     "PUBLIC ACQUIRER CHANGE IN CONTROL" means any Qualifying Change in Control
where the acquirer, or any entity that it is a direct or indirect "beneficial
owner" (as defined in Rule 13d-3 under the Exchange Act or any successor
provision) of more than 50% of the aggregate ordinary voting power of all shares
of such acquirer's capital stock that are entitled to vote generally in the
election of directors, but in each case other than the Company, has a class of
common stock quoted on NASDAQ or traded on another U.S. national or regional
securities exchange or which will be so traded or quoted when issued or
exchanged in connection with such Qualifying Change in Control. Such acquirer's
or other entity's class of common stock quoted on NASDAQ or traded on another
U.S. national or regional securities exchange or which will be so traded or
quoted when issued or exchanged in connection with such Qualifying Change in
Control is herein referred to as "ACQUIRER COMMON STOCK."

     "QIB" means any "qualified institutional buyer" (as defined in Rule 144A).

                                      -5-

<PAGE>

     "QUALIFYING CHANGE IN CONTROL" means any Change in Control included in
clause (i) or (ii) of the definition of Change in Control other than a
transaction (x) in which at least 90% of the consideration, excluding Cash
payments for fractional shares and Cash payments pursuant to dissenters'
appraisal rights, for the Common Stock consists of common stock traded on a U.S.
national securities exchange (or which will be so traded or quoted when issued
or exchanged in connection with such Change in Control) and (y) as a result of
which the Daily Net Share Settlement Value, if any, or any Securities
surrendered for conversion would be payable in such common stock.

     "REGISTRATION RIGHTS AGREEMENT" means that certain registration rights
agreement dated as of the date of this Indenture between the Company and the
Initial Purchasers and, with respect to any Additional Securities, one or more
registration rights agreements between the Company and the other parties thereto
relating to rights given by the Company to the purchasers of Additional
Securities to register such Additional Securities, or exchange such Additional
Securities for registered Securities under the Securities Act.

     "REPRESENTATIVE" means the (a) indenture trustee or other trustee, agent or
representative for any Senior Indebtedness or (b) with respect to any Senior
Indebtedness that does not have any such trustee, agent or other representative,
(i) in the case of such Senior Indebtedness issued pursuant to an agreement
providing for voting arrangements as among the holders or owners of such Senior
Indebtedness, any holder or owner of such Senior Indebtedness acting with the
consent of the required persons necessary to bind such holders or owners of such
Senior Indebtedness and (ii) in the case of all other such Senior Indebtedness,
the holder or owner of such Senior Indebtedness.

     "RESTRICTED GLOBAL SECURITY" means a Global Security that is a Transfer
Restricted Security.

     "RESTRICTED SECURITY LEGEND" means the legend set forth in Section 2.12(a).

     "RESTRICTED STOCK LEGEND" means the legend required by Section 2.12(b).

     "RULE 144A" means Rule 144A under the Securities Act (or any successor
provision), as it may be amended from time to time.

     "SEC" means the United States Securities and Exchange Commission.

     "SECURITIES" means the 1.00% Convertible Subordinated Notes due September
15, 2011, or any of them (each, a "Security").

     "SECURITIES ACT" means the Securities Act of 1933, as amended, and the
rules and regulations promulgated thereunder, as in effect from time to time.

     "SECURITIES CUSTODIAN" means the Trustee, as custodian with respect to the
Securities in global form, or any successor thereto.

     "SENIOR INDEBTEDNESS" means all of the Indebtedness of the Company
outstanding at any time, except (a) the Securities; (b) Indebtedness that by its
terms provides that it is not "senior"

                                      -6-

<PAGE>

in right of payment to the Securities; (c) Indebtedness that by its terms
provides that it is "pari passu" or "junior" in right of payment to the
Securities; (d) Indebtedness for trade payables or any account payable or other
accrued current liability or obligation incurred in the ordinary course of
business in connection with the obtaining of materials or services; and (e) the
Indebtedness of the Company to any of its subsidiaries.

     "SIGNIFICANT SUBSIDIARY" means, in respect of any Person, a Subsidiary of
such Person that would constitute a "significant subsidiary" as such term is
defined under Rule 1-02(w) of Regulation S-X under the Securities Act.

     "SUBSIDIARY" means, in respect of any Person, any corporation, association,
partnership or other business entity of which more than 50% of the total voting
power of shares of Capital Stock or other interests (including partnership
interests) entitled (without regard to the occurrence of any contingency) to
vote in the election of directors, managers, general partners or trustees
thereof is at the time owned or controlled, directly or indirectly, by (i) such
Person; (ii) such Person and one or more Subsidiaries of such Person; or (iii)
one or more Subsidiaries of such Person.

     "TIA" means the Trust Indenture Act of 1939, as amended, and the rules and
regulations thereunder as in effect on the date of this Indenture, except to the
extent any amendment to the Trust Indenture Act expressly provides for
application of the Trust Indenture Act as in effect on another date.

     "TRADING DAY" means a day on which (i) there is no Market Disruption Event
and (ii) NASDAQ or, if the Common Stock is not listed on NASDAQ, the principal
other U.S. national or regional securities exchange on which the Common Stock is
then listed is open for trading or, if the Common Stock is not so listed, any
Business Day. A "Trading Day" only includes those days that have a scheduled
closing time of 4:00 p.m. (New York City time) or the then standard closing time
for regular trading on the relevant exchange or trading system.

     "TRADING PRICE" means, on any date of determination with respect to any
Security, the average of the secondary bid quotations per Security obtained by
the Conversion Agent for $5,000,000 principal amount of Securities at
approximately 3:30 p.m., New York City time, on such determination date from
three independent nationally recognized securities dealers selected by the
Company; provided that, if at least three such bids cannot reasonably be
obtained, but two such bids can reasonably be obtained, then the average of
these two bids shall be used; provided, further, that, if at least two such bids
cannot reasonably be obtained, but one such bid can reasonably be obtained, this
one bid shall be used. If, on any date of determination, the Conversion Agent
cannot reasonably obtain at least one bid for $5,000,000 principal amount of the
Securities from an independent nationally recognized securities dealer or, in
the reasonable judgment of the Company, the bid quotations are not indicative of
the secondary market value of the Securities, then the Trading Price of such
Securities on such date of determination will be deemed to be less than 98% of
the Conversion Value.

     "TRANSFER RESTRICTED SECURITIES" has the meaning set forth in Section
2.12(a).

                                      -7-

<PAGE>

     "TRUSTEE" means the party named as such in the first paragraph of this
Indenture until a successor replaces it in accordance with the provisions of
this Indenture and, thereafter, means the successor.

     "TRUST OFFICER" means, with respect to the Trustee, any officer assigned to
the Corporate Trust Office and also, with respect to a particular matter, any
other officer to whom such matter is referred because of such officer's
knowledge of and familiarity with the particular subject.

     "VICE PRESIDENT", when used with respect to the Company or the Trustee,
means any vice president, whether or not designated by a number or a word or
words added before or after the title "vice president."

     "VOTING STOCK" of a Person means any class or classes of Capital Stock or
other interests (including partnership interests) of such Person then
outstanding and normally entitled (without regard to the occurrence of any
contingency) to vote in the election of directors, managers or trustees thereof.

     Section 1.02. Other Definitions.

<TABLE>
<CAPTION>
                                                                      DEFINED IN
TERM                                                                    SECTION
----                                                                  ----------
<S>                                                                   <C>
"Additional Securities" ...........................................     2.16(a)
"Additional Shares" ...............................................     4.02(a)
"Agent Members" ...................................................     2.01(b)
"Bankruptcy Law" ..................................................     9.01
"Change in Control" ...............................................     3.01(a)
"Closing Sale Price Condition" ....................................     5.01(a)
"Company Order" ...................................................     2.02
"Conversion Agent" ................................................     2.03
"Conversion Date" .................................................     5.02
"Conversion Notice" ...............................................     5.02
"Conversion Obligation" ...........................................     5.05(a)
"Conversion Period" ...............................................     5.05(a)
"Conversion Price" ................................................     5.06
"Current Market Price" ............................................     5.06(e)
"Custodian" .......................................................     9.01
"Daily Conversion Value" ..........................................     5.05(a)
"Daily Net Share Settlement Value" ................................     5.05(a)
"Dividend Adjustment Amount" ......................................     5.06(e)
"Dividend Threshold Amount" .......................................     5.06(e)
"Depositary" ......................................................     2.01(a)
"DTC" .............................................................     2.01(a)
"Effective Date" ..................................................     4.02(a)
"Event of Default" ................................................     9.01
"Expiration Date" .................................................     5.06(d)
"Expiration Time" .................................................     5.06(d)
"Fundamental Change" ..............................................     3.01(a)
</TABLE>

                                      -8-

<PAGE>

<TABLE>
<CAPTION>
                                                                      DEFINED IN
TERM                                                                    SECTION
----                                                                  ----------
<S>                                                                   <C>
"Fundamental Change Purchase Date" ................................     3.01(a)
"Fundamental Change Purchase Notice" ..............................     3.01(c)
"Fundamental Change Purchase Price" ...............................     3.01(a)
"Legal Holiday" ...................................................    13.07
"Liquidated Damages Notice" .......................................     7.05
"Interest Payment Date" ...........................................     4.01(a)
"Market Capitalization" ...........................................     5.06(d)
"Maximum Conversion Rate Adjustment" ..............................     4.02(g)
"Paying Agent" ....................................................     2.03
"Payment Blockage Notice" .........................................     6.02
"Primary Registrar" ...............................................     2.03
"Purchased Shares" ................................................     5.06(d)
"Quarter" .........................................................     5.01(a)
"Registrar" .......................................................     2.03
"Record Date" .....................................................     4.01(a)
"Repurchase Premium" ..............................................     5.06(d)
"Resale Restriction Termination Date" .............................     2.06(a)
"Rights Plan" .....................................................     5.06(c)
"Stock Price" .....................................................     4.02(a)
"Subsequent Market Price" .........................................     5.06(d)
"Termination of Trading" ..........................................     3.01(a)
"Then-Prevailing Market Price" ....................................     5.06(d)
"Triggering Distribution" .........................................     5.06(d)
"Trigger Event" ...................................................     5.06(c)
"Unissued Shares" .................................................     3.01(a)
"Valuation Period" ................................................     4.03(b)
"Volume Weighted Average Price" ...................................     5.05(a)
</TABLE>

     Section 1.03. Trust Indenture Act Provisions.

     Whenever this Indenture refers to a provision of the TIA, that provision is
incorporated by reference in and made a part of this Indenture. The Indenture
shall also include those provisions of the TIA required to be included herein by
the provisions of the Trust Indenture Reform Act of 1990. The following TIA
terms used in this Indenture have the following meanings:

     "INDENTURE SECURITIES" means the Securities;

     "INDENTURE TRUSTEE" means the Trustee; and

     "OBLIGOR" on the indenture securities means the Company or any other
obligor on the Securities.

                                      -9-
<PAGE>

     All other terms used in this Indenture that are defined in the TIA, defined
by TIA reference to another statute or defined by any SEC rule and not otherwise
defined herein have the meanings assigned to them therein.

     Section 1.04. Rules of Construction.

     Unless the context otherwise requires:

     (A) a term has the meaning assigned to it herein;

     (B) an accounting term not otherwise defined has the meaning assigned to it
in accordance with GAAP;

     (C) words in the singular include the plural, and words in the plural
include the singular;

     (D) provisions apply to successive events and transactions;

     (E) the term "merger" includes a statutory share exchange, and the term
"merged" has a correlative meaning;

     (F) the masculine gender includes the feminine and the neuter;

     (G) references to agreements and other instruments include subsequent
amendments thereto;

     (H) "herein," "hereof" and other words of similar import refer to this
Indenture as a whole and not to any particular Article, Section or other
subdivision; and

     (I) references to the payments on the Securities shall include liquidated
damages payable under the Registration Rights Agreement, if any.

                            ARTICLE 2 THE SECURITIES

     Section 2.01. Form and Dating.

     The Securities and the corresponding Trustee's certificate of
authentication shall be substantially in the respective forms set forth in
Exhibit A, which Exhibit is incorporated in and made part of this Indenture. The
Securities may have notations, legends or endorsements required by law, stock
exchange rule or usage. The Company shall provide any such notations, legends or
endorsements to the Trustee in writing. The Securities shall be dated the date
of their authentication.

     (a) Restricted Global Securities. Securities offered and sold to QIBs in
reliance on Rule 144A and resold to IAIs in the United States of America shall
be issued in the form of one or more Restricted Global Securities, substantially
in the form of Exhibit A, which shall be deposited on behalf of the acquirers of
the Securities represented thereby with the Trustee, at its Corporate Trust
Office, as custodian for the depositary, The Depository Trust Company ("DTC")
(such depositary, or any successor thereto, being hereinafter referred to as the

                                      -10-

<PAGE>

"DEPOSITARY"), and registered in the name of its nominee, Cede & Co., duly
executed by the Company and authenticated by the Trustee as hereinafter
provided. The aggregate principal amount of the Global Securities may from time
to time be increased or decreased by adjustments made on the records of the
Securities Custodian as hereinafter provided, subject in each case to compliance
with the Applicable Procedures.

     (b) Global Securities In General. Each Global Security shall represent such
of the outstanding Securities as shall be specified therein, and each shall
provide that it shall represent the aggregate amount of outstanding Securities
from time to time endorsed thereon and that the aggregate amount of outstanding
Securities represented thereby may from time to time be reduced or increased, as
appropriate, to reflect exchanges, redemptions, purchases or conversions of such
Securities. Any adjustment of the aggregate principal amount of a Global
Security to reflect the amount of any increase or decrease in the amount of
outstanding Securities represented thereby shall be made by the Trustee in
accordance with instructions given by the Holder thereof as required by Section
2.12 hereof and shall be made on the records of the Trustee and the Depositary.

     Members of, or participants in, the Depositary ("AGENT MEMBERS") shall have
no rights under this Indenture with respect to any Global Security held on their
behalf by the Depositary or under the Global Security, and the Depositary
(including, for this purpose, its nominee) may be treated by the Company, the
Trustee and any agent of the Company or the Trustee as the absolute owner and
Holder of such Global Security for all purposes whatsoever. Notwithstanding the
foregoing, nothing herein shall (A) prevent the Company, the Trustee or any
agent of the Company or the Trustee from giving effect to any written
certification, proxy or other authorization furnished by the Depositary or (B)
impair, as between the Depositary and its Agent Members, the operation of
customary practices governing the exercise of the rights of a Holder of any
Security.

     (c) Book Entry Provisions. The Company shall execute and the Trustee shall,
in accordance with this Section 2.01(c) and Section 2.02, authenticate and
deliver initially one or more Global Securities that (i) shall be registered in
the name of Cede & Co. or as otherwise instructed by the Depositary, (ii) shall
be delivered by the Trustee to the Depositary or pursuant to the Depositary's
instructions and (iii) shall bear legends substantially to the following effect:

     "UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF
THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION ("DTC"), TO POLYMEDICA
CORPORATION (THE "COMPANY") OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE
OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO.
OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC
(AND ANY PAYMENT IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED
BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE
HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE
REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN."

                                      -11-

<PAGE>

     Section 2.02. Execution and Authentication.

     An Officer shall sign the Securities for the Company by manual or facsimile
signature. Typographic and other minor errors or defects in any such facsimile
signature shall not affect the validity or enforceability of any Security which
has been authenticated and delivered by the Trustee.

     If an Officer whose signature is on a Security no longer holds that office
at the time the Trustee authenticates the Security, the Security shall be valid
nevertheless.

     A Security shall not be valid until an authorized signatory of the Trustee
manually or by facsimile signs the certificate of authentication on the
Security. The signature shall be conclusive evidence that the Security has been
authenticated under this Indenture.

     The Trustee shall authenticate and make available for delivery Securities
for original issue in the aggregate principal amount of up to $180,000,000 upon
receipt of a written order or orders of the Company signed by two Officers of
the Company (a "COMPANY ORDER"); provided that additional Securities may be
issued pursuant to Section 2.16. Each Company Order shall specify the amount of
Securities to be authenticated, shall provide that all Securities will be
represented by a Global Security and the date on which each original issue of
Securities is to be authenticated.

     The Trustee shall act as the initial authenticating agent. Thereafter, the
Trustee may appoint an authenticating agent acceptable to the Company to
authenticate Securities. An authenticating agent may authenticate Securities
whenever the Trustee may do so. Each reference in this Indenture to
authentication by the Trustee includes authentication by such agent. An
authenticating agent shall have the same rights as an Agent to deal with the
Company or an Affiliate of the Company.

     The Securities shall be issuable only in registered form without coupons
and only in denominations of $1,000 principal amount and any integral multiple
thereof.

     Section 2.03. Registrar, Paying Agent and Conversion Agent.

     The Company shall maintain one or more offices or agencies where Securities
may be presented for registration of transfer or for exchange (each, a
"REGISTRAR"), one or more offices or agencies where Securities may be presented
for payment (each, a "PAYING AGENT"), one or more offices or agencies where
Securities may be presented for conversion (each, a "CONVERSION AGENT") and one
or more offices or agencies where notices and demands to or upon the Company in
respect of the Securities and this Indenture may be served. The Company will at
all times maintain a Paying Agent, Conversion Agent, Registrar and an office or
agency where notices and demands to or upon the Company in respect of the
Securities and this Indenture may be served in Chicago, Illinois. One of the
Registrars (the "PRIMARY REGISTRAR") shall keep a register of the Securities and
of their transfer and exchange.

     The Company shall enter into an appropriate agency agreement with any Agent
not a party to this Indenture. The agreement shall implement the provisions of
this Indenture that

                                      -12-

<PAGE>

relate to such Agent. The Company shall notify the Trustee of the name and
address of any Agent not a party to this Indenture. If the Company fails to
maintain a Registrar, Paying Agent, Conversion Agent or agent for service of
notices and demands in any place required by this Indenture, or fails to give
the foregoing notice, the Trustee shall act as such. The Company or any
Affiliate of the Company may act as Paying Agent (except for the purposes of
Article 11).

     The Company hereby initially designates the Trustee as Paying Agent,
Registrar, Custodian and Conversion Agent, and each of the Corporate Trust
Office of the Trustee and the office or agency of the Trustee in Chicago,
Illinois to be such office or agency of the Company for each of the aforesaid
purposes.

     Section 2.04. Paying Agent to Hold Money in Trust.

     Prior to 11:00 a.m., New York City time, on each due date of the principal
of, premium on, if any, or interest on, any Securities, the Company shall
deposit with a Paying Agent a sum sufficient to pay such principal, premium on,
if any, and interest so becoming due. Subject to Section 6.02, a Paying Agent
shall hold in trust for the benefit of Securityholders or the Trustee all money
held by the Paying Agent for the payment of principal of, premium on, if any, or
interest on, the Securities and shall notify the Trustee of any default by the
Company (or any other obligor on the Securities) in making any such payment. If
the Company or an Affiliate of the Company acts as Paying Agent, it shall,
before 11:00 a.m., New York City time, on each due date of the principal of,
premium on, if any, or interest on, any Securities, segregate the money and hold
it as a separate trust fund. The Company at any time may require a Paying Agent
to pay all money held by it to the Trustee, and the Trustee may at any time
during the continuance of any default, upon written request to a Paying Agent,
require such Paying Agent to pay forthwith to the Trustee all sums so held in
trust by such Paying Agent. Upon doing so, the Paying Agent (other than the
Company) shall have no further liability for the money.

     Section 2.05. Securityholder Lists.

     The Trustee shall preserve in as current a form as is reasonably
practicable the most recent list available to it of the names and addresses of
Securityholders. If the Trustee is not the Primary Registrar, the Company shall
furnish to the Trustee on or before each semiannual interest payment date, and
at such other times as the Trustee may request in writing, a list in such form
and as of such date as the Trustee may reasonably require of the names and
addresses of Securityholders.

     Section 2.06. Transfer and Exchange.

     (a) The following provision shall apply with respect to any proposed
transfer of a Security prior to the date which is two years after the later of
the date of its original issue and the last date on which the Company or any
Affiliate of the Company was the owner of such Securities (or any predecessor
thereto) (the "RESALE RESTRICTION TERMINATION DATE"):

          (i)   a transfer of a Security in certificated form to a QIB shall be
     made upon receipt by the Trustee or its agent of a certificate
     substantially in the form of the Form of Certificate to be Delivered Upon
     Exchange or Registration of Transfer of Securities set forth on the reverse
     of the Security that the transferee is purchasing the Security for its own
     account or an account with respect to which it exercises sole investment
     discretion and that it and any such account is a "qualified institutional
     buyer" within the meaning of Rule 144A, and is aware that the sale to it is
     being made in reliance on Rule 144A and acknowledges that it has received
     such information regarding the Company as it has requested pursuant to Rule
     144A or has determined not to request such information and that it is aware
     that the transferor is relying upon its foregoing representations in order
     to claim the exemption from registration provided by Rule 144A; and

          (ii) a transfer of a Security or a beneficial interest therein
     pursuant to an exemption from registration under the Securities Act other
     than Rule 144A shall be made upon receipt by the Registrar and the Company
     of such opinions of counsel, certificates

                                      -13-

<PAGE>

     and/or other information reasonably required by and satisfactory to them in
     order to ensure compliance with the Securities Act, including, in the case
     of a transfer of a Security or a beneficial interest therein to an IAI, a
     certificate substantially in the form set forth in Section 2.14 from the
     proposed transferee.

     (b) Subject to compliance with any applicable additional requirements
contained in Section 2.12, when a Security is presented to a Registrar with a
request to register a transfer thereof or to exchange such Security for an equal
principal amount of Securities of other authorized denominations, the Registrar
shall register the transfer or make the exchange as requested; provided,
however, that every Security presented or surrendered for registration of
transfer or exchange shall be duly endorsed or accompanied by an assignment form
and, if applicable, a transfer certificate, each in the form included in Exhibit
A, and in form satisfactory to the Registrar duly executed by the Holder thereof
or its attorney duly authorized in writing. Upon the transfer, exchange or
replacement of Securities not bearing a Restricted Security Legend, the
Registrar shall deliver Securities that do not bear a Restricted Security
Legend. Upon the transfer, exchange or replacement of Securities bearing a
Restricted Security Legend, the Registrar shall deliver only Securities that
bear such Restricted Security Legend unless (i) a Security is being transferred
pursuant to an effective registration statement, (ii) such Securities (or
beneficial interests) are transferred, replaced or exchanged on or after the
Resale Restriction Termination Date or (iii) if requested by the Company or
Registrar, there is delivered to the Company and the Registrar an Opinion of
Counsel to the effect that neither such legend nor the related restrictions on
transfer are required in order to maintain compliance with the provisions of the
Securities Act. The Restricted Security Legend on any Security shall be removed
at the request of the Holder on or after the Resale Restriction Termination Date
therefor. To permit registration of transfers and exchanges, upon surrender of
any Security for transfer or exchange at an office or agency maintained pursuant
to Section 2.03, the Company shall execute and the Trustee shall authenticate
Securities of a like aggregate principal amount at the Registrar's request. Any
exchange or transfer shall be without charge, except that the Company or the
Registrar may require payment of a sum sufficient to cover any tax or other
governmental charge that may be imposed in relation thereto; provided that this
sentence shall not apply to any exchange pursuant to Section 2.10, 3.04, 5.02
(last paragraph) or 12.05.

     None of the Company, any Registrar or the Trustee shall be required to
exchange or register a transfer of any Securities or portions thereof in respect
of which a Fundamental Change Purchase Notice has been delivered and not
withdrawn by the Holder thereof (except, in the case of the purchase of a
Security in part, the portion thereof not to be purchased).

     All Securities issued upon any transfer or exchange of Securities shall be
valid obligations of the Company, evidencing the same debt and entitled to the
same benefits under this Indenture, as the Securities surrendered upon such
transfer or exchange.

     (c) Any Registrar appointed pursuant to Section 2.03 hereof shall provide
to the Trustee such information as the Trustee may reasonably require in
connection with the delivery by such Registrar of Securities upon transfer or
exchange of Securities.

     (d) Each Holder of a Security agrees to indemnify the Company and the
Trustee against any liability that may result from the transfer, exchange or
assignment of such Holder's

                                      -14-

<PAGE>

Security in violation of any provision of this Indenture and/or applicable U.S.
federal or state securities law.

     The Trustee shall have no obligation or duty to monitor, determine or
inquire as to compliance with any restrictions on transfer imposed under this
Indenture or under applicable law with respect to any transfer of any interest
in any Security (including any transfers between or among Agent Members or other
beneficial owners of interests in any Global Security) other than to require
delivery of such certificates and other documentation or evidence as are
expressly required by, and to do so if and when expressly required by the terms
of, this Indenture and to examine the same to determine substantial compliance
as to form with the express requirements hereof.

     Section 2.07. Replacement Securities.

     If any mutilated Security is surrendered to the Company, a Registrar or the
Trustee, or the Company, a Registrar and the Trustee receive evidence to their
satisfaction of the destruction, loss or theft of any Security, and there is
delivered to the Company, the applicable Registrar and the Trustee such security
or indemnity as will be required by them to save each of them harmless, then, in
the absence of notice to the Company, such Registrar or the Trustee that such
Security has been acquired by a bona fide purchaser, the Company shall execute,
and upon its written request the Trustee shall authenticate and deliver, in
exchange for any such mutilated Security or in lieu of any such destroyed, lost
or stolen Security, a new Security of like tenor and principal amount, bearing a
number not contemporaneously outstanding.

     In case any such mutilated, destroyed, lost or stolen Security has become
or is about to become due and payable, or is about to be redeemed or purchased
by the Company pursuant to Article 3, the Company in its discretion may, instead
of issuing a new Security, pay, redeem or purchase such Security, as the case
may be.

     Upon the issuance of any new Securities under this Section 2.07, the
Company may require the payment of a sum sufficient to cover any tax or other
governmental charge that may be imposed in relation thereto and any other
reasonable expenses (including the reasonable fees and expenses of the Trustee
or the Registrar) in connection therewith.

     Every new Security issued pursuant to this Section 2.07 in lieu of any
mutilated, destroyed, lost or stolen Security shall constitute an original
additional contractual obligation of the Company, whether or not the mutilated,
destroyed, lost or stolen Security shall be at any time enforceable by anyone,
and shall be entitled to all benefits of this Indenture equally and
proportionately with any and all other Securities duly issued hereunder.

     The provisions of this Section 2.07 are (to the extent lawful) exclusive
and shall preclude (to the extent lawful) all other rights and remedies with
respect to the replacement or payment of mutilated, destroyed, lost or stolen
Securities.

                                      -15-

<PAGE>

     Section 2.08. Outstanding Securities.

     Securities outstanding at any time are all Securities authenticated by the
Trustee, except for those canceled by it, those converted pursuant to Article 5,
those delivered to it for cancellation or surrendered for transfer or exchange
and those described in this Section 2.08 as not outstanding.

     If a Security is replaced pursuant to Section 2.07, it ceases to be
outstanding unless the Company receives, subsequent to the new Security's
authentication, proof satisfactory to the Company that the replaced Security is
held by a bona fide purchaser.

     If a Paying Agent (other than the Company or an Affiliate of the Company)
holds in respect of Securities on a Fundamental Change Purchase Date or the
Final Maturity Date money sufficient to pay the principal of (including premium,
if any), and any accrued interest on Securities (or portions thereof) payable on
that date, then on and after such Fundamental Change Purchase Date or the Final
Maturity Date, as the case may be, such Securities (or portions thereof, as the
case may be) shall cease to be outstanding and any interest on them shall cease
to accrue.

     Subject to the restrictions contained in Section 2.09, a Security does not
cease to be outstanding because the Company or an Affiliate of the Company holds
the Security.

     Section 2.09. Treasury Securities.

     In determining whether the Holders of the required principal amount of
Securities have concurred in any notice, direction, waiver or consent,
Securities owned by the Company or any other obligor on the Securities or by any
Affiliate of the Company or of such other obligor shall be disregarded, except
that, for purposes of determining whether the Trustee shall be protected in
relying on any such notice, direction, waiver or consent, only Securities which
a Trust Officer of the Trustee actually knows are so owned shall be so
disregarded. Securities so owned which have been pledged in good faith shall not
be disregarded if the pledgee establishes to the satisfaction of the Trustee the
pledgee's right so to act with respect to the Securities and that the pledgee is
not the Company or any other obligor on the Securities or any Affiliate of the
Company or of such other obligor.

     Section 2.10. Temporary Securities.

     Until definitive Securities are ready for delivery, the Company may prepare
and execute, and, upon receipt of a Company Order, the Trustee shall
authenticate and deliver, temporary Securities. Temporary Securities shall be
substantially in the form of definitive Securities but may have variations that
the Company with the consent of the Trustee considers appropriate for temporary
Securities. Without unreasonable delay, the Company shall prepare and the
Trustee shall authenticate and deliver definitive Securities in exchange for
temporary Securities.

     Section 2.11. Cancellation.

     The Company at any time may deliver Securities to the Trustee for
cancellation. The Registrar, the Paying Agent and the Conversion Agent shall
forward to the Trustee or its agent

                                      -16-

<PAGE>

any Securities surrendered to them for transfer, exchange, redemption, payment
or conversion. The Trustee and no one else shall cancel, in accordance with its
standard procedures, all Securities surrendered for transfer, exchange,
redemption, payment, conversion or cancellation and shall deliver the canceled
Securities to the Company. All Securities which are redeemed, purchased or
otherwise acquired by the Company or any of its Subsidiaries prior to the Final
Maturity Date shall be delivered to the Trustee for cancellation, and the
Company may not hold or resell such Securities or issue any new Securities to
replace any such Securities or any Securities that any Holder has converted
pursuant to Article 5.

     Section 2.12. Legends; Additional Transfer Requirements.

     (a) Every Security that bears or is required under this Section 2.12(a) to
bear the Restricted Security Legend set forth in this Section 2.12(a) (the
"TRANSFER RESTRICTED SECURITIES") shall be subject to the restrictions on
transfer set forth in Section 2.06 and this Section 2.12(a) (including those set
forth in the Restricted Security Legend set forth below), and the Holder of each
such Transfer Restricted Security, by such Holder's acceptance thereof, agrees
to be bound by all such restrictions on transfer. As used in Sections 2.12(a)
and 2.12(b), the term "transfer" includes any sale, pledge, transfer or other
disposition whatsoever of any Transfer Restricted Security. The Registrar shall
not register any transfer of a Transfer Restricted Security not made in
accordance with the restrictions on transfer set forth in Section 2.06 and this
Section 2.12.

     Subject to the last paragraph of this Section 2.12(a) and Section 2.15 with
respect to Common Stock, prior to the Resale Restriction Termination Date, any
certificate evidencing any Security (and all securities issued in exchange
therefor or substitution thereof; including Common Stock, if any, issued upon
conversion thereof, which shall bear the legend set forth in Section 2.12(b), if
applicable) shall bear a legend in substantially the following form:

     "THIS SECURITY AND THE SHARES OF POLYMEDICA CORPORATION (THE "COMPANY")
     COMMON STOCK ("COMMON STOCK") ISSUABLE UPON CONVERSION OF THIS SECURITY
     HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE
     "SECURITIES ACT"), OR ANY STATE SECURITIES LAWS. NEITHER THIS SECURITY, THE
     SHARES OF COMMON STOCK ISSUABLE UPON CONVERSION OF THIS SECURITY NOR ANY
     INTEREST OR PARTICIPATION HEREIN OR THEREIN MAY BE REOFFERED, SOLD,
     ASSIGNED, TRANSFERRED, PLEDGED, ENCUMBERED OR OTHERWISE DISPOSED OF IN THE
     ABSENCE OF SUCH REGISTRATION OR UNLESS SUCH TRANSACTION IS EXEMPT FROM, OR
     NOT SUBJECT TO, REGISTRATION.

     THE HOLDER OF THIS SECURITY, BY ITS ACCEPTANCE HEREOF, AGREES TO OFFER,
     SELL OR OTHERWISE TRANSFER SUCH SECURITY, PRIOR TO THE DATE (THE "RESALE
     RESTRICTION TERMINATION DATE") THAT IS TWO YEARS AFTER THE LATER OF THE
     ORIGINAL ISSUE DATE HEREOF AND THE LAST DATE ON WHICH THE COMPANY OR ANY
     AFFILIATE OF THE COMPANY WAS THE

                                      -17-

<PAGE>

     OWNER OF THIS SECURITY (OR ANY PREDECESSOR OF SUCH SECURITY) ONLY (A) TO
     THE COMPANY OR ANY SUBSIDIARY THEREOF, (B) FOR SO LONG AS THE SECURITIES
     ARE ELIGIBLE FOR RESALE PURSUANT TO RULE 144A, TO A PERSON IT REASONABLY
     BELIEVES IS A "QUALIFIED INSTITUTIONAL BUYER" AS DEFINED IN RULE 144A UNDER
     THE SECURITIES ACT THAT PURCHASES FOR ITS OWN ACCOUNT OR FOR THE ACCOUNT OF
     A QUALIFIED INSTITUTIONAL BUYER TO WHICH NOTICE IS GIVEN THAT THE TRANSFER
     IS BEING MADE IN RELIANCE ON RULE 144A, (C) PURSUANT TO A REGISTRATION
     STATEMENT THAT HAS BEEN DECLARED EFFECTIVE UNDER THE SECURITIES ACT, OR (D)
     PURSUANT TO ANOTHER AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS
     OF THE SECURITIES ACT, SUBJECT TO THE RIGHTS OF THE COMPANY AND THE WITHIN
     MENTIONED TRUSTEE PRIOR TO ANY SUCH OFFER, SALE OR TRANSFER PURSUANT TO
     CLAUSE (D) TO REQUIRE THE DELIVERY OF AN OPINION OF COUNSEL, CERTIFICATION
     AND/OR OTHER INFORMATION SATISFACTORY TO EACH OF THEM, AND IN EACH OF THE
     FOREGOING CASES WHERE REGISTRATION OR TRANSFER OF THIS SECURITY IS
     REQUIRED, A CERTIFICATE OF TRANSFER IN THE FORM APPEARING ON THE OTHER SIDE
     OF THIS SECURITY COMPLETED AND DELIVERED BY THE TRANSFEROR TO THE TRUSTEE.
     THIS LEGEND WILL BE REMOVED ON OR AFTER THE RESALE RESTRICTION TERMINATION
     DATE UPON THE REQUEST OF THE HOLDER THEREFOR."

     Any Security (or security issued in exchange or substitution therefor) as
to which such restrictions on transfer shall have expired in accordance with
their terms or that has been transferred, replaced or exchanged on or after the
Resale Restriction Termination Date or that has been transferred pursuant to a
registration statement that has been declared effective under the Securities Act
may, upon surrender of such Security to the Registrar for exchange in accordance
with the provisions of this Section 2.12, be exchanged for a new Security or
Securities, of like tenor and aggregate principal amount, which shall not bear
the Restricted Security Legend required by this Section 2.12(a).

     (b) Every stock certificate representing Common Stock issued upon
conversion of a Transfer Restricted Security that bears or is required under
this Section 2.12(b) to bear the Restricted Stock Legend set forth in this
Section 2.12(b) shall be subject to the restrictions on transfer set forth in
Section 2.06 and this Section 2.12(b) (including those set forth in the
Restricted Stock Legend set forth below), and the Holder of such Common Stock
issued upon conversion of a Transfer Restricted Security, by such Holder's
acceptance thereof, agrees to be bound by all such restrictions on transfer and
the further restrictions set forth in Section 2.15. The Company shall not
register any transfer of Common Stock issued upon conversion of such a Transfer
Restricted Security not made in accordance with the restrictions on transfer set
forth in this Section 2.12.

                                      -18-

<PAGE>

     Subject to the last paragraph of this Section 2.12(b) and Section 2.15 with
respect to Common Stock, prior to the Resale Restriction Termination Date, any
stock certificate representing Common Stock issued upon conversion of a Transfer
Restricted Security shall bear a legend in substantially the following form,
unless such Common Stock has been sold pursuant to a registration statement that
has been declared effective under the Securities Act (and which continues to be
effective at the time of such issuance) or such Common Stock has been issued
upon conversion of Securities that have been transferred pursuant to a
registration statement that has been declared effective under the Securities
Act:

     "THIS SECURITY (OR ITS PREDECESSOR) WAS ORIGINALLY ISSUED IN A TRANSACTION
     EXEMPT FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE
     "SECURITIES ACT"), OR ANY STATE SECURITIES LAWS. NEITHER THIS SECURITY NOR
     ANY INTEREST OR PARTICIPATION HEREIN MAY BE REOFFERED, SOLD, ASSIGNED,
     TRANSFERRED, PLEDGED, ENCUMBERED OR OTHERWISE DISPOSED OF IN THE ABSENCE OF
     SUCH REGISTRATION OR UNLESS SUCH TRANSACTION IS EXEMPT FROM, OR NOT SUBJECT
     TO, REGISTRATION.

     THE HOLDER OF THIS SECURITY, BY ITS ACCEPTANCE HEREOF, AGREES TO OFFER,
     SELL OR OTHERWISE TRANSFER SUCH SECURITY, PRIOR TO THE DATE (THE "RESALE
     RESTRICTION TERMINATION DATE") THAT IS TWO YEARS AFTER THE LATER OF THE
     ORIGINAL ISSUE DATE HEREOF AND THE LAST DATE ON WHICH THE COMPANY OR ANY
     AFFILIATE OF THE COMPANY WAS THE OWNER OF THIS SECURITY (OR ANY PREDECESSOR
     OF SUCH SECURITY) ONLY (A) TO THE COMPANY OR ANY SUBSIDIARY THEREOF, (B)
     FOR SO LONG AS THE SECURITIES ARE ELIGIBLE FOR RESALE PURSUANT TO RULE
     144A, TO A PERSON IT REASONABLY BELIEVES IS A "QUALIFIED INSTITUTIONAL
     BUYER" AS DEFINED IN RULE 144A UNDER THE SECURITIES ACT THAT PURCHASES FOR
     ITS OWN ACCOUNT OR FOR THE ACCOUNT OF A QUALIFIED INSTITUTIONAL BUYER TO
     WHICH NOTICE IS GIVEN THAT THE TRANSFER IS BEING MADE IN RELIANCE ON RULE
     144A, (C) PURSUANT TO A REGISTRATION STATEMENT THAT HAS BEEN DECLARED
     EFFECTIVE UNDER THE SECURITIES ACT, OR (D) PURSUANT TO ANOTHER AVAILABLE
     EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT, SUBJECT
     TO THE RIGHTS OF THE COMPANY AND THE WITHIN MENTIONED TRUSTEE PRIOR TO ANY
     SUCH OFFER, SALE OR TRANSFER PURSUANT TO CLAUSE (D) TO REQUIRE THE DELIVERY
     OF AN OPINION OF COUNSEL, CERTIFICATION AND/OR OTHER INFORMATION
     SATISFACTORY TO EACH OF THEM, AND IN EACH OF THE FOREGOING CASES WHERE
     REGISTRATION OR TRANSFER OF THIS SECURITY IS REQUIRED, A CERTIFICATE OF
     TRANSFER IN THE FORM APPEARING ON THE OTHER SIDE OF THIS SECURITY

                                      -19-

<PAGE>

     COMPLETED AND DELIVERED BY THE TRANSFEROR TO THE TRUSTEE. THIS LEGEND WILL
     BE REMOVED ON OR AFTER THE RESALE RESTRICTION TERMINATION DATE UPON THE
     REQUEST OF THE HOLDER THEREFOR."

     Any stock certificate (or security issued in exchange or substitution
therefor) as to which such restrictions on transfer shall have expired in
accordance with their terms or that has been transferred, replaced or exchanged
on or after the Resale Restriction Termination Date or that has been transferred
pursuant to a registration statement that has been declared effective under the
Securities Act may, upon surrender of such stock certificate to the Registrar
for exchange in accordance with the provisions of this Section 2.12 and Section
2.15, be exchanged for a new stock certificate, of like tenor and aggregate
number of shares, which shall not bear the Restricted Stock Legend required by
this Section 2.12(b).

     (c) A Global Security may not be transferred, in whole or in part, to any
Person other than the Depositary or a nominee or any successor thereof, and no
such transfer to any such other Person may be registered; provided that the
foregoing shall not prohibit any transfer of a Security that is issued in
exchange for a Global Security but is not itself a Global Security. No transfer
of a Security to any Person shall be effective under this Indenture or the
Securities unless and until such Security has been registered in the name of
such Person. Notwithstanding any other provisions of this Indenture or the
Securities, transfers of a Global Security, in whole or in part, shall be made
only in accordance with this Section 2.12.

     (d) The provisions of clauses (i), (ii), (iii) and (iv) below shall apply
only to Global Securities:

          (i) Notwithstanding any other provisions of this Indenture or the
     Securities, a Global Security shall not be exchanged in whole or in part
     for a Security registered in the name of any Person other than the
     Depositary or one or more nominees thereof; provided that a Global Security
     may be exchanged for Securities registered in the names of any person
     designated by the Depositary in the event that (A) the Depositary has
     notified the Company that it is unwilling or unable to continue as
     Depositary for such Global Security or such Depositary has ceased to be a
     "clearing agency" registered under the Exchange Act, and a successor
     Depositary is not appointed by the Company within 90 days, or (B) an Event
     of Default has occurred and is continuing with respect to the Securities.
     Any Global Security exchanged pursuant to clause (A) shall be so exchanged
     in whole and not in part, and any Global Security exchanged pursuant to
     clause (B) above may be exchanged in whole or from time to time in part as
     directed by the Depositary. Any Security issued in exchange for a Global
     Security or any portion thereof shall be a Global Security; provided that
     any such Security so issued that is registered in the name of a Person
     other than the Depositary or a nominee thereof shall not be a Global
     Security.

          (ii) Securities issued in exchange for a Global Security or any
     portion thereof shall be issued in definitive, fully registered form,
     without interest coupons, shall have an aggregate principal amount equal to
     that of such Global Security or portion thereof to be so exchanged, shall
     be registered in such names and be in such authorized denominations

                                      -20-

<PAGE>

     as the Depositary shall designate and shall bear the applicable legends
     provided for herein. Any Global Security to be exchanged in whole shall be
     surrendered by the Depositary to the Trustee, as Registrar. With regard to
     any Global Security to be exchanged in part, either such Global Security
     shall be so surrendered for exchange or, if the Trustee is acting as
     custodian for the Depositary or its nominee with respect to such Global
     Security, the principal amount thereof shall be reduced by an amount equal
     to the portion thereof to be so exchanged, by means of an appropriate
     adjustment made on the records of the Trustee. Upon any such surrender or
     adjustment, the Trustee shall authenticate and deliver the Security
     issuable on such exchange to or upon the order of the Depositary or an
     authorized representative thereof.

          (iii) The registered Holder may grant proxies and otherwise authorize
     any Person, including Agent Members and persons that may hold interests
     through Agent Members, to take any action which a Holder is entitled to
     take under this Indenture or the Securities.

          (iv) In the event of the occurrence of any of the events specified in
     clause (i) above, the Company will promptly make available to the Trustee a
     reasonable supply of Certificated Securities in definitive, fully
     registered form, without interest coupons.

     Section 2.13. Cusip or ISIN Numbers.

     The Company in issuing the Securities may use one or more "CUSIP" and/or
ISIN numbers (if then generally in use), and, if so, the Trustee shall use
"CUSIP" and/or ISIN numbers in notices of purchase as a convenience to Holders;
provided that any such notice may state that no representation is made as to the
correctness of such numbers either as printed on the Securities or as contained
in any notice of a purchase and that reliance may be placed only on the other
identification numbers printed on the Securities, and any such purchase shall
not be affected by any defect in or omission of such numbers. The Company will
promptly notify the Trustee of any change in the "CUSIP" and/or ISIN numbers.

     Section 2.14. Form of Certificate To Be Delivered in Connection with
Transfers to Institutional Accredited Investors.

                                                                          [Date]

PolyMedica Corporation
c/o LaSalle Bank National Association
135 South LaSalle Street, Suite 1560
Chicago, Illinois 60603
Attention: Corporate Trust Services Division

Ladies and Gentlemen:

This certificate is delivered to request a transfer of $__________ principal
amount of the 1.00% Convertible Subordinated Securities due September 15, 2011
(the "Securities") of PolyMedica Corporation (the "Company").

                                      -21-

<PAGE>

Upon transfer, the Securities would be registered in the name of the new
beneficial owner as follows:

Name: __________________________________________________________________________

Address: _______________________________________________________________________

Taxpayer ID Number: ____________________________________________________________

The undersigned represents and warrants to you that:

     1. We are an institutional accredited investor (as defined in Rule
     501(a)(1), (2), (3) or (7) under the Securities Act of 1933, as amended
     (the "Securities Act")) purchasing for our own account or for the account
     of such an institutional accredited investor at least $250,000 principal
     amount of the Securities, and we are acquiring the Securities not with a
     view to, or for offer or sale in connection with, any distribution in
     violation of the Securities Act. We have such knowledge and experience in
     financial and business matters as to be capable of evaluating the merits
     and risk of our investment in the Securities and we invest in or purchase
     securities similar to the Securities in the normal course of our business.
     We and any accounts for which we are acting are each able to bear the
     economic risk of the complete loss of our or its investment.

     2. We understand that the Securities have not been registered under the
     Securities Act and, unless so registered, may not be sold except as
     permitted in the following sentence. We agree on our own behalf and on
     behalf of any investor account for which we are purchasing Securities to
     offer, sell or otherwise transfer such Securities prior to the date that is
     two years after the later of the date of original issue and the last date
     on which the Company or any affiliate of the Company was the owner of such
     Securities (or any predecessor thereto) (the "Resale Restriction
     Termination Date") only (a) to the Company, (b) pursuant to a registration
     statement which has been declared effective under the Securities Act, (c)
     in a transaction complying with the requirements of Rule 144A under the
     Securities Act ("Rule 144A"), to a Person we reasonably believe is a
     qualified institutional buyer under Rule 144A (a "QIB") that purchases for
     its own account or for the account of a QIB and to whom notice is given
     that the transfer is being made in reliance on Rule 144A, (d) to an
     institutional accredited investor within the meaning of Rule 501(a)(1),
     (2), (3) or (7) under the Securities Act that is purchasing for its own
     account or for the account of such an institutional accredited investor, in
     each case in a minimum principal amount of Securities of $250,000 or (e)
     pursuant to another available exemption from the registration requirements
     of the Securities Act, subject in each of the foregoing cases to compliance
     with any applicable state securities laws. The foregoing restrictions on
     resale will not apply subsequent to the Resale Restriction Termination
     Date. If any resale or other transfer of the Securities is proposed to be
     made pursuant to clause (d) above prior to the Resale Restriction
     Termination Date, the transferor shall deliver a letter from the transferee
     substantially in the form of this letter to the Company and the Trustee,
     which shall provide, among other things, that the transferee is an
     institutional accredited investor (within the meaning of Rule 501(a)(1),
     (2), (3) or (7) under the Securities Act) and that it is acquiring such
     Securities for investment purposes and not for distribution in violation of
     the Securities Act. Each purchaser acknowledges that the Company and the
     Trustee reserve the right prior to any offer, sale or other transfer prior
     to the Resale Termination Date of the Securities pursuant to clauses (d) or
     (e) above to require the delivery of an opinion of counsel, certifications
     and/or other information satisfactory to the Company and the Trustee.

                                      -22-

<PAGE>

                                        TRANSFEREE:
                                                    ----------------------------

                                        BY:
                                            ------------------------------------

     Section 2.15. Issuance, Transfer and Exchange of Common Stock Issuable Upon
Conversion of the Securities.

     Shares of Common Stock to be issued upon conversion of Securities prior to
the effectiveness of a Shelf Registration Statement shall be physically
delivered in certificated form to the Holders converting such Securities and the
certificate representing such shares of Common Stock shall bear the Restricted
Stock Legend unless removed in accordance with Section 2.12(b).

     If (i) shares of Common Stock to be issued upon conversion of Securities
prior to the effectiveness of a Shelf Registration Statement are to be
registered in a name other than that of the Holder of such Securities or (ii)
shares of Common Stock represented by a certificate bearing the Restricted Stock
Legend are transferred subsequently by such Holder, then, unless the Shelf
Registration Statement has become effective and such shares are being
transferred pursuant to the Shelf Registration Statement, the Holder must
deliver to the transfer agent for the Common Stock and to the Company a
certificate in substantially the form of Exhibit B as to compliance with the
restrictions on transfer applicable to such shares of Common Stock and neither
the transfer agent nor the registrar for the Common Stock shall be required to
register any transfer of such Common Stock not so accompanied by a properly
completed certificate.

     Except in connection with a Shelf Registration Statement, if on or prior to
the Resale Restriction Termination Date certificates representing shares of
Common Stock are issued upon the registration of transfer, exchange or
replacement of any other certificate representing shares of Common Stock bearing
the Restricted Stock Legend, or if a request is made to remove such Restricted
Stock Legend from certificates representing shares of Common Stock, the
certificates so issued shall bear the Restricted Stock Legend, or the Restricted
Stock Legend shall not be removed, as the case may be, unless there is delivered
to the Company such reasonably satisfactory evidence, which, in the case of a
transfer made pursuant to Rule 144 under the Securities Act, may include a
written opinion from legal counsel, as may be reasonably required by the
Company, that neither the legend nor the restrictions on transfer set forth
therein are required to ensure that transfers thereof comply with the Securities
Act and that such shares of Common Stock are securities that are not
"restricted" within the meaning of Rule 144 under the Securities Act. Upon
transfer in connection with a Shelf Registration Statement or after the Resale
Restriction Termination Date or upon provision to the Company of such reasonably
satisfactory evidence, the Company shall cause the transfer agent for the Common
Stock to countersign and deliver certificates representing shares of Common
Stock that do not bear the Restricted Stock Legend.

     Section 2.16. Additional Securities.

     (a) The Company may, from time to time, subject to compliance with any
other applicable provisions of this Indenture, without the consent of the
Holders, create and issue

                                      -23-

<PAGE>

pursuant to this Indenture additional notes ("ADDITIONAL SECURITIES") that shall
have terms and conditions and "CUSIP" numbers identical to those of the other
outstanding Securities, except with respect to:

          (i) the issue date;

          (ii) the amount of interest payable on the first Interest Payment Date
     therefor;

          (iii) the issue price;

          (iv) any adjustments necessary in order to conform to and ensure
     compliance with the Securities Act (or other applicable securities laws)
     and any registration rights or similar agreement applicable to such
     Additional Securities, which are not adverse in any material respect to the
     Holder of any outstanding Securities (other than such Additional
     Securities); and

          (v) any Liquidated Damages payable as provided in Section 7.05.

The Securities issued on the Issue Date and any Additional Securities shall be
treated as a single class for all purposes under this Indenture.

     (b) With respect to any Additional Securities, the Company will set forth
in an Officer's Certificate pursuant to a resolution of the Board of Directors
of the Company, copies of which will be delivered to the Trustee, the following
information:

          (i) the aggregate principal amount of such Additional Securities to be
     authenticated and delivered pursuant to this Indenture;

          (ii) the issue date and the issue price of such Additional Securities;
     provided that no Additional Securities may be issued at a price that would
     cause such Additional Securities to have "original issue discount" within
     the meaning of Section 1273 of the Internal Revenue Code of 1986, as
     amended; and

          (iii) whether such Additional Securities will be subject to transfer
     restrictions under the Securities Act (or other applicable securities
     laws).

     Section 2.17. Liquidated Damages Under Any Registration Rights Agreement.

     Under certain circumstances, the Company may be obligated to pay Liquidated
Damages to Holders, all as and to the extent set forth in any Registration
Rights Agreement. The terms thereof are hereby incorporated herein by reference
and such Liquidated Damages are deemed to be interest for purposes of this
Indenture.

                                      -24-
<PAGE>

           ARTICLE 3 PURCHASES OF SECURITIES UPON FUNDAMENTAL CHANGE

     Section 3.01. Purchase of Securities at Option of the Holder Upon
Fundamental Change.

     (a) If at any time that Securities remain outstanding there shall occur a
Fundamental Change, Securities shall be purchased by the Company at the option
of the Holders, as of the date that is 30 Business Days after the occurrence of
the Fundamental Change (the "FUNDAMENTAL CHANGE PURCHASE DATE") at a purchase
price equal to 100% of the principal amount of the Securities, together with any
accrued and unpaid interest to, but excluding, the Fundamental Change Purchase
Date (the "FUNDAMENTAL CHANGE PURCHASE PRICE"), payable in cash, subject to
satisfaction by or on behalf of any Holder of the requirements set forth in
subsection (c) of this Section 3.01. Notwithstanding the foregoing, the Company
may not repurchase the Securities upon the occurrence of a Fundamental Change if
the principal amount of the Securities has been accelerated and such
acceleration has not been rescinded on or prior to the Fundamental Change
Purchase Date.

     A "FUNDAMENTAL CHANGE" shall mean the occurrence of a Change in Control or
a Termination of Trading.

     A "CHANGE IN CONTROL" shall be deemed to have occurred if any of the
following occurs after the date hereof:

          (i) any "person" or "group" (as such terms are defined below) is or
     becomes the "beneficial owner" (as defined below), directly or indirectly,
     of shares of Voting Stock of the Company representing 50% or more of the
     total voting power of all outstanding classes of Voting Stock of the
     Company or has the power, directly or indirectly, to elect a majority of
     the members of the board of directors of the Company; or

          (ii) the Company consolidates with, or merges with or into, another
     Person or the Company sells, assigns, conveys, transfers, leases or
     otherwise disposes of all or substantially all of the assets of the
     Company, or any Person consolidates with, or merges with or into, the
     Company, in any such event other than pursuant to a transaction in which
     the Persons that "beneficially owned" (as defined below), directly or
     indirectly, shares of Voting Stock of the Company immediately prior to such
     transaction "beneficially own" (as defined below), directly or indirectly,
     shares of Voting Stock of the Company representing at least a majority of
     the total voting power of all outstanding classes of Voting Stock of the
     surviving or transferee Person; or

          (iii) a majority of the members of the board of directors of the
     Company are not Continuing Directors; or

          (iv) the holders of the capital stock of the Company approve any plan
     or proposal for the liquidation or dissolution of the Company (whether or
     not otherwise in compliance with the terms hereof).

                                      -25-

<PAGE>

     For the purpose of the definition of "Change in Control", (i) "person" and
"group" have the meanings given such terms under Section 13(d) and 14(d) of the
Exchange Act or any successor provision to either of the foregoing, and the term
"group" includes any group acting for the purpose of acquiring, holding or
disposing of securities within the meaning of Rule 13d-5(b)(1) under the
Exchange Act (or any successor provision thereto), (ii) a "beneficial owner"
shall be determined in accordance with Rule 13d-3 under the Exchange Act, as in
effect on the date of this Indenture, except that the number of shares of Voting
Stock of the Company shall be deemed to include, in addition to all outstanding
shares of Voting Stock of the Company and Unissued Shares deemed to be held by
the "person" or "group" (as such terms are defined above) or other Person with
respect to which the Change in Control determination is being made, all Unissued
Shares deemed to be held by all other Persons, and (iii) the terms "beneficially
owned" and "beneficially own" shall have meanings correlative to that of
"beneficial owner". The term "UNISSUED SHARES" means shares of Voting Stock not
outstanding that are subject to options, warrants, rights to purchase or
conversion privileges exercisable within 60 days of the date of determination of
a Change in Control.

     Notwithstanding anything to the contrary set forth in this Section 3.01, a
Change in Control will not be deemed to have occurred if, in the case of a
merger or consolidation, at least 90% of the consideration (excluding cash
payments for fractional shares and cash payments pursuant to dissenters'
appraisal rights) in the merger or consolidation that would otherwise constitute
a Change in Control consists of common stock quoted on NASDAQ or traded on
another U.S. national securities exchange (or which will be so traded or quoted
when issued or exchanged in connection with such Change in Control) and as a
result of such transaction or transactions the Daily Net Share Settlement Value
(if any) of any Securities surrendered for conversion would be in the form of
such common stock.

     A "TERMINATION OF TRADING" means that the Common Stock or other securities
into which the Securities are convertible are not approved for listing on NASDAQ
and are not listed for trading on another U.S. national or regional securities
exchange or any similar U.S. system of automated securities price dissemination
or traded in the over-the-counter market.

     (b) Within 10 Business Days after the occurrence of a Fundamental Change,
the Company shall mail a written notice of the Fundamental Change to the Trustee
and to each Holder (and to beneficial owners as required by applicable law). The
notice shall include the form of a Fundamental Change Purchase Notice to be
completed by the Holder and shall state:

          (i) the date of such Fundamental Change and, briefly, the events
     causing such Fundamental Change;

          (ii) the date by which the Fundamental Change Purchase Notice pursuant
     to this Section 3.01 must be given;

          (iii) the Fundamental Change Purchase Date;

          (iv) the Fundamental Change Purchase Price (including the amount of
     additional shares that are deliverable, if any);

                                      -26-

<PAGE>

          (v) the Holder's right to require the Company to purchase the
     Securities;

          (vi) briefly, the conversion rights of the Securities;

          (vii) the name and address of each Paying Agent and Conversion Agent;

          (viii) the Conversion Price and any adjustments thereto;

          (ix) that Securities as to which a Fundamental Change Purchase Notice
     has been given may be converted into Cash and Common Stock (if any)
     pursuant to Article 5 of this Indenture only to the extent that the
     Fundamental Change Purchase Notice has been withdrawn in accordance with
     the terms of this Indenture;

          (x) the procedures that the Holder must follow to exercise rights
     under this Section 3.01;

          (xi) the procedures for withdrawing a Fundamental Change Purchase
     Notice, including a form of notice of withdrawal; and

          (xii) that the Holder must satisfy the requirements set forth in the
     Securities in order to convert the Securities.

     If any of the Securities is in the form of a Global Security, then the
Company shall modify such notice to the extent necessary to accord with the
procedures of the Depositary applicable to the repurchase of Global Securities.

     (c) A Holder may exercise its rights specified in subsection (a) of this
Section 3.01 upon delivery of a written notice (which shall be in substantially
the form included in Exhibit A hereto and which may be delivered by letter,
overnight courier, hand delivery, facsimile transmission or in any other written
form and, in the case of Global Securities, may be delivered electronically or
by other means in accordance with the Depositary's customary procedures) of the
exercise of such rights (a "FUNDAMENTAL CHANGE PURCHASE NOTICE") to any Paying
Agent at any time prior to the close of business on the second Trading Day next
preceding the Fundamental Change Purchase Date.

     The delivery of such Security to any Paying Agent (together with all
necessary endorsements) at the office of such Paying Agent shall be a condition
to the receipt by the Holder of the Fundamental Change Purchase Price therefor.

     The Company shall purchase from the Holder thereof, pursuant to this
Section 3.01, a portion of a Security if the principal amount of such portion is
$1,000 or an integral multiple of $1,000. Provisions of the Indenture that apply
to the purchase of all of a Security pursuant to Section 3.01 through Section
3.04 also apply to the purchase of such portion of such Security.

     Notwithstanding anything herein to the contrary, any Holder delivering to a
Paying Agent the Fundamental Change Purchase Notice contemplated by this
subsection (c) shall have the right to withdraw such Fundamental Change Purchase
Notice in whole or in a portion thereof that is a principal amount of $1,000 or
in an integral multiple thereof at any time prior to

                                      -27-

<PAGE>

5:00 p.m., New York City time, on the second Trading Day next preceding the
Fundamental Change Purchase Date by delivery of a written notice of withdrawal
to the Paying Agent in accordance with Section 3.02.

     A Paying Agent shall promptly notify the Company of the receipt by it of
any Fundamental Change Purchase Notice or written withdrawal thereof.

     Anything herein to the contrary notwithstanding, in the case of Global
Securities, any Fundamental Change Purchase Notice may be delivered or withdrawn
and such Securities may be surrendered or delivered for purchase in accordance
with the Applicable Procedures as in effect from time to time.

     Section 3.02. Effect of Fundamental Change Purchase Notice.

     Upon receipt by any Paying Agent of the Fundamental Change Purchase Notice
specified in Section 3.01(c), the Holder of the Security in respect of which
such Fundamental Change Purchase Notice was given shall (unless such Fundamental
Change Purchase Notice is withdrawn as specified below) thereafter be entitled
to receive the Fundamental Change Purchase Price with respect to such Security.
Such Fundamental Change Purchase Price shall be paid to such Holder promptly
following the later of (a) the Fundamental Change Purchase Date with respect to
such Security (provided the conditions in Section 3.01(c) have been satisfied)
and (b) the time of delivery of such Security to a Paying Agent by the Holder
thereof in the manner required by Section 3.01(c). Securities in respect of
which a Fundamental Change Purchase Notice has been given by the Holder thereof
may not be converted into shares of Common Stock pursuant to Article 5 on or
after the date of the delivery of such Fundamental Change Purchase Notice unless
such Fundamental Change Purchase Notice has first been validly withdrawn.

     A Fundamental Change Purchase Notice may be withdrawn by means of a written
notice (which may be delivered by mail, overnight courier, hand delivery,
facsimile transmission or in any other written form and, in the case of Global
Securities, may be delivered electronically or by other means in accordance with
the Depositary's customary procedures) of withdrawal delivered by the Holder to
a Paying Agent at any time prior to 5:00 p.m., New York City time, on the second
Trading Day immediately preceding the Fundamental Change Purchase Date,
specifying the principal amount of the Security or portion thereof (which must
be a principal amount of $1,000 or an integral multiple of $1,000 in excess
thereof) with respect to which such notice of withdrawal is being submitted.

     Section 3.03. Deposit of Fundamental Change Purchase Price.

     On or before 11:00 a.m., New York City time, on the Fundamental Change
Purchase Date, the Company shall deposit with the Trustee or with a Paying Agent
(other than the Company or an Affiliate of the Company) an amount of money (in
immediately available funds if deposited on such Fundamental Change Purchase
Date) sufficient to pay the aggregate Fundamental Change Purchase Price of all
the Securities or portions thereof that are to be purchased as of such
Fundamental Change Purchase Date. The manner in which the deposit required by
this Section 3.03 is made by the Company shall be at the option of the Company;

                                      -28-

<PAGE>

provided that such deposit shall be made in a manner such that the Trustee or a
Paying Agent shall have immediately available funds on the Fundamental Change
Purchase Date.

     If a Paying Agent holds, in accordance with the terms hereof, money
sufficient to pay the Fundamental Change Purchase Price of any Security for
which a Fundamental Change Purchase Notice has been tendered and not withdrawn
in accordance with this Indenture, then, on the Fundamental Change Purchase
Date, such Security will cease to be outstanding and the rights of the Holder in
respect thereof shall terminate (other than the right to receive the Fundamental
Change Purchase Price as aforesaid). The Company shall publicly announce the
principal amount of Securities purchased as a result of such Fundamental Change
on or as soon as practicable after the Fundamental Change Purchase Date.

     To the extent that the aggregate amount of cash deposited by the Company
pursuant to this Section 3.03 exceeds the aggregate Fundamental Change Purchase
Price of the Securities or portions thereof that the Company is obligated to
purchase, then promptly after the Fundamental Change Purchase Date the Trustee
or a Paying Agent, as the case may be, shall return any such excess cash to the
Company.

     Section 3.04. Securities Purchased in Part.

     Any Security that is to be purchased only in part shall be surrendered at
the office of a Paying Agent, and promptly after the Fundamental Change Purchase
Date the Company shall execute and the Trustee shall authenticate and deliver to
the Holder of such Security, without service charge, a new Security or
Securities, of such authorized denomination or denominations as may be requested
by such Holder, in aggregate principal amount equal to, and in exchange for, the
portion of the principal amount of the Security so surrendered that is not
purchased.

     Section 3.05. Compliance with Securities Laws Upon Purchase of Securities.

     In connection with any offer to purchase or repurchase of Securities under
Section 3.01, the Company shall (a) comply with Rule 13e-4, Rule 14e-1 and any
other tender offer rules under the Exchange Act, (b) file the related Schedule
TO (or any successor or similar schedule, form or report), if required, under
the Exchange Act and (c) otherwise comply with all federal and state securities
laws in connection with such offer to purchase or repurchase of Securities, all
so as to permit the rights of the Holders and obligations of the Company under
Section 3.01 through Section 3.04 to be exercised in the time and in the manner
specified therein.

              ARTICLE 4 PAYMENT OF INTEREST AND ADDITIONAL SHARES

     Section 4.01. Interest Payments.

     (a) The Company shall pay interest on the Securities at a rate of 1.00% per
annum, payable semi-annually in arrears on March 15 and September 15 of each
year (each, an "INTEREST PAYMENT DATE"), or if any such day is not a Business
Day, the immediately following Business Day, commencing March 15, 2007. Interest
on a Security shall be paid to the Holder of such Security at the close of
business on March 1 or September 1 (each, a "RECORD DATE"), as the case may be,
next preceding the related Interest Payment Date, and shall be computed on the
basis of

                                      -29-

<PAGE>

a 360-day year comprised of twelve 30-day months. In the event of the maturity,
conversion, or purchase of a Security by the Company at the option of the
Holder, interest shall cease to accrue on such Security.

     (b) Upon conversion of a Security, (i) a Holder shall not receive any cash
payment of interest (unless such conversion occurs between a Record Date and the
Interest Payment Date to which it relates, in which case a Holder on the Record
Date will receive on the Interest Payment Date accrued and unpaid interest) and
the Conversion Rate shall not be adjusted to account for accrued and unpaid
interest and (ii) except as set forth in clause (c) below, the Company's
delivery to a Holder of cash and shares, if any, of Common Stock into which the
Security is convertible shall be deemed to satisfy its obligation with respect
to such Security, and any accrued but unpaid interest shall be deemed to be paid
in full upon conversion, rather than cancelled, extinguished or forfeited.

     (c) Securities surrendered for conversion by a Holder after the close of
business on any Record Date but prior to the next Interest Payment Date must be
accompanied by payment of an amount equal to the interest that the Holder is to
receive on the Securities; provided, however, that no such payment need be made
(1) if the Company has specified a Fundamental Change Purchase Date that is
after a Record Date and on or prior to the next Interest Payment Date, (2) with
respect to any Securities surrendered for conversion following the Record Date
for the payment of interest immediately preceding the Final Maturity Date or (3)
only to the extent of overdue interest, if any overdue interest exists at the
time of conversion with respect to such Securities.

     Section 4.02. Additional Shares.

     (a) If a Holder elects to convert its Securities pursuant to Section
5.01(b)(iii) hereof in connection with a Qualifying Change in Control that
occurs prior to the Final Maturity Date, the Conversion Rate of the Securities
being converted by such Holder at that time shall be increased by an additional
number of shares of Common Stock (the "ADDITIONAL SHARES") determined by
reference to the table attached as Schedule 4.02 hereto. For avoidance of doubt,
the adjustment provided for in this Section 4.02 shall be made only with respect
to the Securities converted in connection with such Qualifying Change in Control
and shall not be effective as to any Securities not so converted.

     (b) For purposes of determining the applicable number of Additional Shares
pursuant to Schedule 4.02:

          (i) "EFFECTIVE DATE" shall mean the date the Qualifying Change in
     Control occurs or becomes effective (the "EFFECTIVE DATE"); and

          (ii) "STOCK PRICE" shall mean:

               (x) in the case of a Qualifying Change in Control described in
          clause (ii) of the definition of Change in Control, the price paid per
          share of Common Stock in the Change in Control, unless the holders of
          Common Stock receive only

                                      -30-

<PAGE>

          Cash in such Qualifying Change in Control, in which event "Stock
          Price" shall mean the Cash amount paid per share;

               (y) in the case of a Qualifying Change in Control described in
          clause (i) of the definition of Change in Control, the average of the
          last reported Closing Sale Prices of Common Stock over the five
          consecutive Trading Day period ending on the Trading Day preceding the
          Effective Date of such Qualifying Change in Control.

     (c) If the Stock Price is between two Stock Price amounts in the table
attached as Schedule 4.02 hereto, the number of Additional Shares shall be
determined by a straight-line interpolation between the number of Additional
Shares set forth for the higher and lower Stock Price amounts, based on a
365-day year.

     (d) If the Effective Date falls between two Effective Dates in the table
attached as Schedule 4.02 hereto, the number of Additional Shares shall be
determined by a straight-line interpolation between the number of Additional
Shares set forth for the two dates, based on a 365-day year.

     (e) No increase in the Conversion Rate shall be made pursuant to this
Section 4.02 if the Stock Price (i) exceeds $120.00 per share (subject to
adjustment) or (ii) is less than $42.02 per share (subject to adjustment).

     (f) The Stock Price figures set forth in the first row of the table (i.e.,
column headers) in Schedule 4.02 hereto shall be adjusted as of any date on
which the Conversion Price of the Securities is adjusted pursuant to Section
5.06. The adjusted Stock Price figures shall equal the Stock Price figures
applicable immediately prior to such adjustment, multiplied by a fraction, the
numerator of which is the Conversion Price immediately prior to the adjustment
giving rise to the Stock Price figure adjustment and the denominator of which is
the Conversion Price as so adjusted. The number of Additional Shares indicated
in the table shall be adjusted in the same manner as the Conversion Rate is
adjusted as a result of adjustments to the Conversion Price pursuant to Section
5.06.

     (g) In no event shall the Conversion Rate be increased by more than 2.92
shares per $1,000 principal amount of Securities (the "MAXIMUM CONVERSION RATE
ADJUSTMENT") pursuant to the events described in this Section 4.02. The Maximum
Conversion Rate Adjustment shall be subject to adjustments in the same manner as
the Conversion Rate is adjusted as a result of adjustments to the Conversion
Price pursuant to Section 5.06.

     (h) The Company will notify Holders of the anticipated Effective Date of a
Qualifying Change in Control and issue a press release as soon as practicable
after the Company first determines the anticipated Effective Date of such
Qualifying Change in Control.

     Section 4.03. Public Acquirer Change in Control.

     (a) In the event of a Public Acquirer Change in Control, the Company, at
its option, may irrevocably elect, by written notice to the Trustee at any time
prior to the 40th day preceding

                                      -31-

<PAGE>

the proposed Effective Date of the Public Acquirer Change in Control, to cause
the right to convert a Security to be changed, from and after the Effective Date
of such Public Acquirer Change in Control, into a right to convert a Security
into Cash and a number of shares of Acquirer Common Stock at the Conversion
Price specified in Section 4.03(b).

     (b) Upon exercise of the option set forth in Section 4.03(a), the
Conversion Price from and after the Effective Date of the Public Acquirer Change
in Control shall be equal to the product of:

          (i) the Conversion Price in effect immediately prior to the Effective
     Date of such Public Acquirer Change in Control, times

          (ii) the average of the quotients obtained, for each Trading Day in
     the 10 consecutive Trading Day period commencing on the Trading Day next
     succeeding the Effective Date of such Public Acquirer Change in Control
     (the "VALUATION PERIOD"), of:

               (x) the Volume Weighted Average Price of the Acquirer Common
          Stock on each such Trading Day in the Valuation Period, divided by;

               (y) the Acquisition Value of the Common Stock on each such
          Trading Day in the Valuation Period;

     (c) Following the adjustment of the Conversion Price pursuant to this
Section 4.03, the Conversion Price shall be subject to adjustment in accordance
with Section 5.06 in the event that any of the events described in Section 5.06
occurs thereafter.

     (d) If the Company exercises its option pursuant to this Section 4.03, no
adjustment under Section 4.02 shall be made in respect of the Public Acquirer
Change in Control.

                              ARTICLE 5 CONVERSION

     Section 5.01. Conversion Privilege.

     (a) Subject to the further provisions of this Article 5 and paragraph 9 of
the Securities, a Holder of a Security may convert the principal amount of such
Security (or any portion thereof equal to $1,000 or any integral multiple of
$1,000 in excess thereof) into Cash and Common Stock at any time prior to the
close of business on April 15, 2011, at the Conversion Price then in effect, if,
during any calendar quarter (the "QUARTER") commencing after the date hereof,
the Closing Sale Price of the Common Stock for at least 20 Trading Days in the
period of 30 consecutive Trading Days ending on the last Trading Day of the
Quarter preceding the Quarter in which the conversion occurs is more than 120%
of the Conversion Price of the Securities in effect on that last Trading Day
(the "CLOSING SALE PRICE CONDITION"), subject to the exceptions provided in
Section 5.01(b); provided, however, that if such Security is submitted for
purchase pursuant to Article 3, such conversion right shall terminate at the
close of business on the second Trading Day immediately preceding the
Fundamental Change Purchase Date for such Security or such earlier date as the
Holder presents such Security for purchase (unless the Company shall default in
making the Fundamental Change Purchase Price payment

                                      -32-

<PAGE>

when due, in which case the conversion right shall terminate at the close of
business on the date such default is cured and such Security is purchased).

     Provisions of this Indenture that apply to conversion of all of a Security
also apply to conversion of a portion of a Security.

     A Security in respect of which a Holder has delivered a Fundamental Change
Purchase Notice pursuant to Section 3.01(c) exercising the option of such Holder
to require the Company to purchase such Security may be converted only if such
Fundamental Change Purchase Notice is withdrawn by a written notice of
withdrawal delivered to a Paying Agent prior to 5:00 p.m., New York City time,
on the second Trading Day immediately preceding the Fundamental Change Purchase
Date in accordance with Section 3.02.

     A Holder of Securities is not entitled to any rights of a holder of Common
Stock until such Holder has converted its Securities to Common Stock and only to
the extent such Securities are deemed to have been converted into Common Stock
pursuant to this Article 5.

     (b) Even if the Closing Sale Price Condition is not satisfied,

          (i) if the Trading Price for the Securities on each Trading Day during
     any five consecutive Trading Day period was less than 98% of the Closing
     Sale Price of Common Stock on such date multiplied by the current
     Conversion Rate, a holder may surrender Securities for conversion at any
     time during the following 10 Trading Days;

          (ii) in the event that the Company declares

               (A) a dividend or distribution of any rights or warrants to all
          holders of Common Stock entitling them to subscribe for or purchase
          for a period expiring within 60 days after the record date for such
          dividend or distribution shares of Common Stock at a price per share
          less than the Current Market Price per share (as defined in Section
          5.06(e)) on the record date for such dividend or distribution, or

               (B) a dividend or distribution of cash, debt securities (or other
          evidences of indebtedness) or other assets (excluding dividends or
          distributions for which a Conversion Price adjustment is required to
          be made under Section 5.06(a) or 5.06(b) of this Indenture) where the
          fair market value of such dividend or distribution per share of Common
          Stock, as determined in this Indenture, together with all other such
          dividends and distributions within the preceding twelve months,
          exceeds 15% of the Current Market Price of the Common Stock as of the
          Trading Day immediately prior to the date of declaration for such
          dividend or distribution,

     then the Securities may be surrendered for conversion beginning on the date
     the Company gives notice to the Holders of such right, which shall not be
     less than 30 days prior to the ex-dividend time for such dividend or
     distribution, until the earlier of the

                                      -33-

<PAGE>

     close of business on the Business Day prior to the ex-dividend time or
     until the Company announces that such distribution will not take place;

          (iii) upon the occurrence of a Fundamental Change with respect to the
     Company, the Securities may be surrendered for conversion at any time from
     or after the date which is 40 days prior to the anticipated effective time
     of the Fundamental Change as announced by the Company, which announcement
     must occur, to the extent practicable, not earlier than 70 days nor later
     than 40 days prior to such anticipated effective time, until the close of
     business on the second Trading Day immediately preceding the Fundamental
     Change Purchase Date; and

          (iv) at any time after April 15, 2011 and prior to the close of
     business on the Business Day immediately preceding the Final Maturity Date,
     the Securities may be surrendered for conversion regardless of whether any
     of the foregoing conditions has been satisfied.

     (c) If a Holder converts Securities at any time beginning 40 days before
the scheduled Effective Date of any Fundamental Change and ending at the close
of business on the second Trading Day immediately preceding the Fundamental
Change Purchase Date, such Holder shall receive:

          (i) if such Securities are surrendered for conversion at any time
     beginning 30 Trading Days before the date of payment of consideration in
     connection with a Change in Control, Cash and, with respect to the Daily
     Net Share Settlement Value (if any), the kind of securities and other
     assets or property received by holders of the Common Stock in such Change
     in Control; or

          (ii) in all other events, Cash or a combination of Cash and Common
     Stock, in the same manner as described in Section 5.05;

in each case, taking into account any Additional Shares deliverable as a result
of any Qualifying Change in Control.

     (d) Upon request, the Conversion Agent, on behalf of the Company, will
determine whether the Securities are convertible pursuant to the first paragraph
of Section 5.01(a) and clause (i) of Section 5.01(b), and, if so, will notify
the Trustee and the Company in writing.

     (e) The Conversion Agent shall have no obligation to determine the Trading
Price of the Securities unless the Company has requested such determination in
writing, and the Company shall have no obligation to make such request unless
the Trustee, acting at the request of one or more Holders, provides the Company
with reasonable evidence that the Trading Price of the Securities on any Trading
Day would be less than 98% of the product of the then current Conversion Rate
multiplied by the Closing Sale Price of the Common Stock on that date. At such
time, the Company shall instruct the Conversion Agent to determine the Trading
Price of the Securities beginning on such Trading Day and on each successive
Trading Day for four consecutive Trading Days.

                                      -34-

<PAGE>

     Section 5.02. Conversion Procedure.

     The right to convert any Security may be exercised, if such Security is
represented by a Global Security, by book-entry transfer to the Conversion Agent
(which initially shall be the Trustee) through the facilities of the Depositary
in accordance with the Applicable Procedures or, if such Security is represented
by a Certificated Security, by delivery of such Security at the specified office
of the Conversion Agent, accompanied, in either case, by (a) a completed and
duly signed conversion notice, in the form as set forth on the reverse of
Security attached hereto as Exhibit A (a "CONVERSION NOTICE"); (b) if the
Security is represented by a Certificated Security and such Certificated
Security has been lost, stolen, destroyed or mutilated, a notice to the
Conversion Agent in accordance with Section 2.07 regarding the loss, theft,
destruction or mutilation of the Security; (c) appropriate endorsements and
transfer documents if required by the Conversion Agent; and (d) payment of any
tax or duty, in accordance with Section 5.04, which may be payable in respect of
any transfer involving the issue or delivery of the Common Stock in the name of
a Person other than the Holder of the Security. The "CONVERSION DATE" shall be
the Business Day on which the Holder satisfies all of the requirements set forth
in the immediately preceding sentence, if all such requirements shall have been
satisfied by 11:00 a.m., New York City time, on such day, and in all other
cases, the Conversion Date shall be the next succeeding Business Day; however,
if a Holder surrenders for conversion a Security at any time after the thirtieth
scheduled Trading Day prior to the Final Maturity Date, the Conversion Date
shall be deemed to be the Business Day immediately preceding such Security's
Final Maturity Date. On the third Business Day following the last day of the
related Conversion Period, subject to Section 5.05, the Company shall deliver to
the Holder through a Conversion Agent a certificate for the number of whole
shares of Common Stock issuable upon the conversion and cash (including cash in
lieu of any fractional shares pursuant to Section 5.03).

     The person in whose name the Common Stock certificate is registered shall
be deemed to be a stockholder of record on the Conversion Date; provided,
however, that no surrender of a Security on any date when the stock transfer
books of the Company shall be closed shall be effective to constitute the person
or persons entitled to receive the shares of Common Stock upon such conversion
as the record holder or holders of such shares of Common Stock on such date, but
such surrender shall be effective to constitute the person or persons entitled
to receive such shares of Common Stock as the record holder or holders thereof
for all purposes at the close of business on the next succeeding day on which
such stock transfer books are open; provided, further, that such conversion
shall be at the Conversion Price in effect for the 25 Trading Days beginning on
the third Trading Day immediately following the Conversion Date as if the stock
transfer books of the Company had not been closed. Upon conversion of a
Security, such person shall no longer be a Holder of such Security. No payment
or adjustment will be made for dividends or distributions on shares of Common
Stock issued upon conversion of a Security.

     Upon surrender of a Security that is converted in part, the Company shall
execute, and the Trustee shall authenticate and deliver to the Holder, a new
Security equal in principal amount to the unconverted portion of the Security
surrendered.

                                      -35-

<PAGE>

     Section 5.03. Fractional Shares.

     The Company will not issue fractional shares of Common Stock upon
conversion of Securities. In lieu thereof, the Company will deliver a number of
shares of Common Stock equal to the aggregate of the fractional shares otherwise
deliverable for each Trading Day during the Conversion Period (rounding down to
the nearest whole number) and cash equal to the remainder multiplied by the
Volume Weighted Average Price of the Common Stock on the last day of the
Conversion Period.

     Section 5.04. Taxes on Conversion.

     If a Holder converts a Security, the Company shall pay any documentary,
stamp or similar issue or transfer tax due on the issue of shares of Common
Stock upon such conversion. However, the Holder shall pay any such tax which is
due because the Holder requests the shares to be issued in a name other than the
Holder's name. The Conversion Agent may refuse to deliver the certificate
representing the Common Stock being issued in a name other than the Holder's
name until the Conversion Agent receives a sum sufficient to pay any tax which
will be due because the shares are to be issued in a name other than the
Holder's name. Nothing herein shall preclude any tax withholding required by law
or regulation.

     Section 5.05. Payment Upon Conversion.

     (a) In the event that the Company receives a Holder's Conversion Notice:

          (i) For each $1,000 aggregate principal amount of Securities
     surrendered for conversion, the Company shall be required to pay to such
     Holder the aggregate of the following (the "CONVERSION OBLIGATION") for
     each of the twenty-five Trading Days beginning on the third Trading Day
     following the Conversion Date (such twenty-five Trading Day period, a
     "CONVERSION PERIOD"):

               (A) if the Daily Conversion Value (as defined below) for such
          Trading Day for each $1,000 aggregate principal amount of Securities
          exceeds $40.00, (1) a Cash payment of $40.00 and (2) the remaining
          Daily Conversion Value (the "DAILY NET SHARE SETTLEMENT VALUE") in
          shares of Common Stock; or

               (B) if the Daily Conversion Value for such Trading Day for each
          $1,000 aggregate principal amount of Securities is less than or equal
          to $40.00, a Cash payment equal to the Daily Conversion Value.

               (C) Notwithstanding the foregoing, if a Holder surrenders for
          conversion a Security at any time after the thirtieth scheduled
          Trading Day immediately preceding the Final Maturity Date, (i) the
          Conversion Date will be deemed to be the Business Day immediately
          preceding the Final Maturity Date, (ii) the Conversion Period for such
          conversion will be the twenty-five Trading Day period commencing on
          the Trading Day immediately following the Final Maturity Date, (iii)
          in lieu of receiving any Cash payments as set forth pursuant to clause
          (A) or (B) above, the Holder will receive a Cash payment on the Final

                                      -36-

<PAGE>

          Maturity Date of $1,000 per $1,000 aggregate principal amount of
          Securities surrendered and (iv) on the third Business Day following
          the last day of such Conversion Period, the Holder will receive an
          amount of shares of Common Stock, if any, equal to the aggregate of,
          for each Trading Day during the Conversion Period, any Daily
          Conversion Value in excess of $40.00 pursuant to clause (ii) below.

          (ii) The amount to be paid to a converting Holder shall be computed in
     accordance with the following:

               (A) The "DAILY CONVERSION VALUE" for each Trading Day during the
          Conversion Period for each $1,000 aggregate principal amount of
          Securities is equal to one-twenty-fifth of the product of the then
          applicable Conversion Rate multiplied by the Volume Weighted Average
          Price of the Common Stock (or such other form of consideration into
          which the Common Stock has been converted in connection with a
          Fundamental Change) on such Trading Day.

               (B) T he number of shares of Common Stock to be delivered under
          Section 5.05(a)(i)(A)(2) or 5.05(a)(i)(C) shall be determined by
          dividing the Daily Net Share Settlement Value by the Volume Weighted
          Average Price of the Common Stock (or such other form of consideration
          into which the Common Stock has been converted in connection with a
          Fundamental Change) for such Trading Day.

               (C) For purposes of this Section 5.05, "VOLUME WEIGHTED AVERAGE
          PRICE" per share of Common Stock (or any security into which the
          Common Stock has been converted in connection with a Fundamental
          Change) on any Trading Day means the volume weighted average price on
          the principal exchange or over-the-counter market on which the Common
          Stock (or such other security) is then listed or traded, from 9:30
          a.m. to 4:00 p.m. (New York City time) on that Trading Day as
          displayed under the heading "Bloomberg VWAP" on Bloomberg Page PLMD
          Equity AQR (or the Bloomberg Page for any security into which the
          Common Stock has been converted in connection with a Fundamental
          Change), or if such Volume Weighted Average Price is not available,
          the Board of Directors' reasonable, good faith estimate of the volume
          weighted average price of the shares of Common Stock (or other
          security) on such Trading Day.

     (b) The Company shall, prior to the issuance of any Securities hereunder,
and from time to time as may be necessary, reserve at all times and keep
available, free from preemptive rights, out of its authorized but unissued
Common Stock, a sufficient number of shares of Common Stock deliverable upon
conversion of all of the Securities.

     (c) All shares of Common Stock that may be issued upon conversion of the
Securities shall be newly issued shares, shall be duly authorized, validly
issued, fully paid and nonassessable and shall be free of any preemptive rights
and free of any lien or adverse claim.

                                      -37-
<PAGE>

     (d) The Company shall endeavor to comply with all applicable securities
laws regulating the offer and delivery of any Common Stock upon conversion of
Securities and shall list or cause to have quoted such shares of Common Stock on
each national or regional securities exchange or on NASDAQ or other
over-the-counter market or such other market on which the Common Stock is then
listed or quoted; provided, however, that, if the rules of such automated
quotation system or exchange permit the Company to defer the listing of such
Common Stock until the first conversion of the Securities into Common Stock in
accordance with the provisions of this Indenture, the Company covenants to list
such Common Stock issuable upon conversion of the Securities in accordance with
the requirements of such automated quotation system or exchange at such time.
Any Common Stock issued upon conversion of a Security hereunder which at the
time of conversion was a Restricted Security shall also be a Restricted
Security.

     (e) Notwithstanding anything herein to the contrary, nothing herein shall
give to any Holder any rights as a creditor in respect of its right to
conversion.

     Section 5.06. Adjustment of Conversion Price.

     The conversion price as stated in paragraph 9 of the Securities (the
"CONVERSION PRICE") shall be adjusted from time to time by the Company as
follows:

     (a) In case the Company shall (i) pay a dividend on its Common Stock in
shares of Common Stock, (ii) make a distribution on its Common Stock in shares
of Common Stock, (iii) subdivide its outstanding Common Stock into a greater
number of shares, or (iv) combine its outstanding Common Stock into a smaller
number of shares, the Conversion Price in effect immediately prior thereto shall
be adjusted so that the Holder of any Security thereafter surrendered for
conversion shall be entitled to receive that number of shares of Common Stock
which it would have owned had such Security been converted immediately prior to
the record date of such event or the happening of such event (assuming such
Security were convertible solely into shares of Common Stock, based on the
relevant Conversion Price, rather than Cash or Cash and Common Stock as set
forth in Section 5.05). An adjustment made pursuant to this subsection (a) shall
become effective immediately after the record date in the case of a dividend or
distribution and shall become effective immediately after the effective date in
the case of subdivision or combination.

     (b) In case the Company shall issue rights or warrants to all or
substantially all holders of its Common Stock entitling them (for a period
commencing no earlier than the record date described below and expiring not more
than 60 days after such record date) to subscribe for or purchase shares of
Common Stock (or securities convertible into Common Stock) at a price per share
(or having a conversion price per share) less than the Current Market Price per
share of Common Stock (as determined in accordance with subsection (e) of this
Section 5.06) on the record date for the determination of stockholders entitled
to receive such rights or warrants, the Conversion Price in effect immediately
prior thereto shall be adjusted so that the same shall equal the price
determined by multiplying the Conversion Price in effect immediately prior to
such record date by a fraction of which the numerator shall be the number of
shares of Common Stock outstanding on such record date plus the number of shares
which the aggregate offering price of the total number of shares of Common Stock
so offered (or the aggregate conversion price of the convertible securities so
offered, which shall be determined by multiplying the

                                      -38-

<PAGE>

number of shares of Common Stock issuable upon conversion of such convertible
securities by the conversion price per share of Common Stock pursuant to the
terms of such convertible securities) would purchase at the Current Market Price
per share (as defined in subsection (e) of this Section 5.06) of Common Stock on
such record date, and of which the denominator shall be the number of shares of
Common Stock outstanding on such record date plus the number of additional
shares of Common Stock offered (or into which the convertible securities so
offered are convertible). Such adjustment shall be made successively whenever
any such rights or warrants are issued and shall become effective immediately
after such record date. If at the end of the period during which such rights or
warrants are exercisable not all rights or warrants shall have been exercised or
distributed, the adjusted Conversion Price shall be immediately readjusted to
what it would have been based upon the number of additional shares of Common
Stock actually issued (or the number of shares of Common Stock issuable upon
conversion of convertible securities actually issued).

     (c) In case the Company shall distribute to all or substantially all
holders of its Common Stock any shares of capital stock of the Company (other
than Common Stock), evidences of indebtedness or other non-cash assets
(including securities of any person other than the Company but excluding (1)
dividends or distributions paid exclusively in cash or (2) dividends or
distributions referred to in subsection (a) of this Section 5.06), or shall
distribute to all or substantially all holders of its Common Stock rights or
warrants to subscribe for or purchase any of its securities (excluding those
rights and warrants referred to in subsection (b) of this Section 5.06 and also
excluding the distribution of rights to all holders of Common Stock pursuant to
the adoption of a stockholder rights plan or the detachment of such rights under
the terms of such stockholder rights plan), then in each such case the
Conversion Price shall be adjusted so that the same shall equal the price
determined by multiplying the current Conversion Price by a fraction of which
the numerator shall be the Current Market Price per share (as defined in
subsection (e) of this Section 5.06) of the Common Stock on the record date
mentioned below less the fair market value on such record date (as determined by
the Board of Directors, whose determination shall be conclusive evidence of such
fair market value and which shall be evidenced by an Officers' Certificate
delivered to the Trustee) of the portion of the capital stock, evidences of
indebtedness or other non-cash assets so distributed or of such rights or
warrants applicable to one share of Common Stock (determined on the basis of the
number of shares of Common Stock outstanding on the record date), and of which
the denominator shall be the Current Market Price per share (as defined in
subsection (e) of this Section 5.06) of the Common Stock on such record date.
Such adjustment shall be made successively whenever any such distribution is
made and shall become effective immediately after the record date for the
determination of shareholders entitled to receive such distribution.

     In the event the then fair market value (as so determined) of the portion
of the capital stock, evidences of indebtedness or other non-cash assets so
distributed or of such rights or warrants applicable to one share of Common
Stock is equal to or greater than the Current Market Price per share of the
Common Stock on such record date, in lieu of the foregoing adjustment, adequate
provision shall be made so that each holder of a Security shall have the right
to receive upon conversion the amount of capital stock, evidences of
indebtedness or other non-cash assets so distributed or of such rights or
warrants such holder would have received had such holder converted each Security
on such record date. In the event that such dividend or distribution is

                                      -39-

<PAGE>

not so paid or made, the Conversion Price shall again be adjusted to be the
Conversion Price which would then be in effect if such dividend or distribution
had not been declared. If the Board of Directors determines the fair market
value of any distribution for purposes of this Section 5.06(c) by reference to
the actual or when issued trading market for any securities, it must in doing so
consider the prices in such market over the same period used in computing the
Current Market Price of the Common Stock.

     In the event that the Company implements a preferred shares rights plan
("RIGHTS PLAN"), upon conversion of the Securities into Common Stock, to the
extent that the Rights Plan has been implemented and is still in effect upon
such conversion, the holders of Securities will receive, in addition to the
Common Stock, the rights described therein (whether or not the rights have
separated from the Common Stock at the time of conversion), subject to the
limitations set forth in the Rights Plan. Any distribution of rights or warrants
pursuant to a Rights Plan complying with the requirements set forth in the
immediately preceding sentence of this paragraph shall not constitute a
distribution of rights or warrants pursuant to this Section 5.06(c).

     Rights or warrants distributed by the Company to all holders of Common
Stock entitling the holders thereof to subscribe for or purchase shares of the
Company's Capital Stock (either initially or under certain circumstances), which
rights or warrants, until the occurrence of a specified event or events
("TRIGGER EVENT"): (i) are deemed to be transferred with such shares of Common
Stock; (ii) are not exercisable; and (iii) are also issued in respect of future
issuances of Common Stock, shall be deemed not to have been distributed for
purposes of this Section 5.06 (and no adjustment to the Conversion Price under
this Section 5.06 will be required) until the occurrence of the earliest Trigger
Event, whereupon such rights and warrants shall be deemed to have been
distributed and an appropriate adjustment (if any is required) to the Conversion
Price shall be made under this Section 5.06(c). If any such right or warrant,
including any such existing rights or warrants distributed prior to the date of
this Indenture, are subject to events, upon the occurrence of which such rights
or warrants become exercisable to purchase different securities, evidences of
indebtedness or other assets, then the date of the occurrence of any and each
such event shall be deemed to be the date of distribution and record date with
respect to new rights or warrants with such rights (and a termination or
expiration of the existing rights or warrants without exercise by any of the
holders thereof). In addition, in the event of any distribution (or deemed
distribution) of rights or warrants, or any Trigger Event or other event (of the
type described in the preceding sentence) with respect thereto that was counted
for purposes of calculating a distribution amount for which an adjustment to the
Conversion Price under this Section 5.06 was made, (1) in the case of any such
rights or warrants which shall all have been redeemed or repurchased without
exercise by any holders thereof, the Conversion Price shall be readjusted upon
such final redemption or repurchase to give effect to such distribution or
Trigger Event, as the case may be, as though it were a cash distribution, equal
to the per share redemption or repurchase price received by a holder or holders
of Common Stock with respect to such rights or warrants (assuming such holder
had retained such rights or warrants), made to all holders of Common Stock as of
the date of such redemption or repurchase, and (2) in the case of such rights or
warrants which shall have expired or been terminated without exercise by any
holders thereof, the Conversion Price shall be readjusted as if such rights and
warrants had not been issued.

                                      -40-

<PAGE>

     (d) (1) In case the Company shall, by dividend or otherwise, at any time
distribute (a "TRIGGERING DISTRIBUTION") to all or substantially all holders of
its Common Stock Cash dividends and other Cash distributions (other than (x)
distributions described in Section 5.06(d)(2) below, (y) any dividend or
distribution in connection with liquidation, dissolution or winding up or (z)
any regular quarterly Cash dividend on Common Stock to the extent that the
aggregate amount of such Cash dividend on Common Stock does not exceed the
Dividend Threshold Amount (subject to adjustment)), the Conversion Price shall
be reduced so that the same shall equal the price determined by dividing such
Conversion Price in effect on the record date with respect to such Cash dividend
or distribution by a fraction of which the numerator shall be the Current Market
Price per share of the Common Stock (as determined in accordance with subsection
(e) of this Section 5.06) as of the day before the "ex" date with respect to the
dividend or distribution, and the denominator shall be such Current Market Price
per share of the Common Stock (as determined in accordance with subsection (e)
of this Section 5.06) as of the day before the "ex" date with respect to the
dividend or distribution less the Dividend Adjustment Amount, such decrease to
become effective immediately prior to the opening of business on the day
following the date on which the Triggering Distribution is paid; provided,
however, that, in the event the portion of the Triggering Distribution
applicable to one share of Common Stock is equal to or greater than the Current
Market Price on such record date, in lieu of the foregoing adjustment, adequate
provision shall be made so that each Holder shall have the right to receive upon
conversion the amount of Cash such Holder would have received had such Holder
converted each Security on such record date. In the event that such dividend or
distribution is not so paid or made, the Conversion Rate shall again be adjusted
to be the Conversion Rate that would then be effect if such dividend or
distribution had not been declared.

               (2) In case any tender offer (as such term is used in Rule 13e-4
          under the Exchange Act or any successor provision) made by the Company
          or any of its Subsidiaries for Common Stock shall expire and such
          tender offer (as amended upon the expiration thereof) shall involve
          the payment of aggregate consideration in an amount (determined as the
          sum of the aggregate amount of cash consideration and the aggregate
          fair market value (as determined by the Board of Directors, whose
          determination shall be conclusive evidence thereof and which shall be
          evidenced by an Officers' Certificate delivered to the Trustee
          thereof) of any other consideration) that exceeds an amount equal to
          the Current Market Price per share of Common Stock (as determined in
          accordance with subsection (e) of this Section 5.06) as of the last
          date (the "EXPIRATION DATE") tenders could have been made pursuant to
          such tender offer (as it may be amended) (the last time at which such
          tenders could have been made on the Expiration Date is hereinafter
          sometimes called the "EXPIRATION TIME"), then, immediately prior to
          the opening of business on the day after the Expiration Date, the
          Conversion Price shall be reduced so that the same shall equal the
          price determined by multiplying the Conversion Price in effect
          immediately prior to the close of business on the Expiration Date by a
          fraction of which the numerator shall be the product of the number of
          shares of Common Stock outstanding (including tendered shares but
          excluding any shares held in the treasury of the Company) at the
          Expiration Time multiplied by the Current Market Price per share of
          the Common Stock (as determined in accordance with subsection (e) of
          this Section 5.06) on the Trading

                                      -41-

<PAGE>

          Day next succeeding the Expiration Date and the denominator shall be
          the sum of (x) the aggregate consideration (determined as aforesaid)
          payable to stockholders based on the acceptance (up to any maximum
          specified in the terms of the tender offer) of all shares validly
          tendered and not withdrawn as of the Expiration Time (the shares
          deemed so accepted, up to any such maximum, being referred to as the
          "PURCHASED SHARES") and (y) the product of the number of shares of
          Common Stock outstanding (less any Purchased Shares and excluding any
          shares held in the treasury of the Company) at the Expiration Time and
          the Current Market Price per share of Common Stock (as determined in
          accordance with subsection (e) of this Section 5.06) on the Trading
          Day next succeeding the Expiration Date, such reduction to become
          effective immediately prior to the opening of business on the day
          following the Expiration Date. In the event that the Company is
          obligated to purchase shares pursuant to any such tender offer, but
          the Company is permanently prevented by applicable law from effecting
          any or all such purchases or any or all such purchases are rescinded,
          the Conversion Price shall again be adjusted to be the Conversion
          Price which would have been in effect based upon the number of shares
          actually purchased. If the application of this Section 5.06(d)(2) to
          any tender offer would result in an increase in the Conversion Price,
          no adjustment shall be made for such tender offer under this Section
          5.06(d)(2).

               (3) In case the Company or any of its Subsidiaries shall make a
          payment in respect of a repurchase of Common Stock the consideration
          for which exceeds the Then-Prevailing Market Price of the Common Stock
          (such amount, the "REPURCHASE PREMIUM"), which repurchase, together
          with any other repurchases of Common Stock by the Company or any of
          its Subsidiaries involving a Repurchase Premium concluded within the
          preceding 12 months not triggering an adjustment to the Conversion
          Price, results in the payment by the Company of an aggregate
          consideration exceeding an amount equal to 10% of the Market
          Capitalization of the Common Stock, then the Conversion Price shall be
          reduced so that the same shall equal the price determined by
          multiplying the Conversion Price in effect immediately prior to the
          close of business on the Trading Day of the repurchase triggering the
          adjustment by a fraction:

                    (A) the numerator of which shall be equal to (a) the
               Subsequent Market Price of the Common Stock minus (b) the
               quotient of (i) the aggregate amount of all the Repurchase
               Premiums paid in connection with such repurchases and (ii) the
               number of shares of Common Stock outstanding on the day
               immediately following the date of the repurchase triggering the
               adjustment, as determined by the Board of Directors of the
               Company; and

                    (B) the denominator of which shall be equal to the
               Subsequent Market Price of the Common Stock;

          provided that no adjustment to the Conversion Price shall be made to
          the extent the Conversion Rate is not reduced as a result of the above
          calculation; and

                                      -42-

<PAGE>

          provided, further, that the repurchases of Common Stock effected by
          the Company or its agent in conformity with Rule 10b-18 under the
          Exchange Act (or any successor provision) will not be included in any
          adjustment to the Conversion Rate made pursuant to this Section
          5.06(d)(3).

               (4) For purposes of this Section 5.06(d), the term "tender offer"
          shall mean and include both tender offers and exchange offers, all
          references to "purchases" of shares in tender offers (and all similar
          references) shall mean and include both the purchase of shares in
          tender offers and the acquisition of shares pursuant to exchange
          offers, and all references to "tendered shares" (and all similar
          references) shall mean and include shares tendered in both tender
          offers and exchange offers.

               (5) For purposes of this Section 5.06(d), the "MARKET
          CAPITALIZATION" will be calculated by multiplying the Subsequent
          Market Price of the Common Stock by the number of shares of Common
          Stock then outstanding on the date of the repurchase triggering the
          adjustment immediately prior to such repurchase, the "SUBSEQUENT
          MARKET PRICE" shall mean the average of the Closing Sale Prices of
          Common Stock for the five consecutive Trading Days beginning on the
          Trading Day following the date of the repurchase triggering the
          adjustment, and in determining the Repurchase Premium, the
          "THEN-PREVAILING MARKET PRICE" of the Common Stock shall be the
          average of the Closing Sale Prices of the Common Stock for the five
          consecutive Trading Days ending on the relevant repurchase date.

               (6) If a payment by the Company shall cause an adjustment to the
          Conversion Rate under both clause (2) and clause (3) of this Section
          5.06(d), the provisions of Section 5.06(d)(3) shall control.

     (e) For the purpose of any computation under subsections (b), (c) and (d)
of this Section 5.06, (i) the current market price (the "CURRENT MARKET PRICE")
shall mean, with respect to any date of determination, the Closing Sale Price
per share of Common Stock on the date of determination. For purposes hereof, the
term "ex" date, when used with respect to any dividend or distribution, means
the first date on which the Common Stock trades, regular way, on the relevant
exchange or in the relevant market from which the Closing Sale Price was
obtained without the right to receive such dividend or distribution; (ii)
"DIVIDEND ADJUSTMENT AMOUNT" means the full amount of the dividend or
distribution to the extent payable in Cash applicable to one common share less
the Dividend Threshold Amount; and (iii) "DIVIDEND THRESHOLD AMOUNT" means $0.15
per share of Common Stock per quarter in the case of regular Cash dividends,
adjusted in a manner proportional to adjustments made to the Conversion Price
other than pursuant to clause (1), (2) or (3) of Section 5.06(d), and to account
for any change in the frequency of payment of regular Cash dividend, and $0.00
in all other cases.

     (f) In any case in which this Section 5.06 shall require that an adjustment
be made following a record date or Expiration Date, as the case may be,
established for purposes of this Section 5.06, the Company may elect to defer
(but only until five Business Days following the filing by the Company with the
Trustee of the certificate described in Section 5.10) issuing to the

                                      -43-

<PAGE>

Holder of any Security converted after such record date or Expiration Date the
shares of Common Stock and other capital stock of the Company issuable upon such
conversion over and above the shares of Common Stock and other capital stock of
the Company issuable, or Cash payable, upon such conversion only on the basis of
the Conversion Price prior to adjustment; and, in lieu of the shares the
issuance of which, or Cash the payment of which, is so deferred, the Company
shall issue or cause its transfer agents to issue due bills or other appropriate
evidence prepared by the Company of the right to receive such shares or Cash, as
the case may be. If any distribution in respect of which an adjustment to the
Conversion Price is required to be made as of the record date or Expiration Date
therefor is not thereafter made or paid by the Company for any reason, the
Conversion Price shall be readjusted to the Conversion Price which would then be
in effect if such record date had not been fixed or such effective date or
Expiration Date had not occurred.

     Section 5.07. No Adjustment.

     Notwithstanding the provisions of Section 5.06, no adjustment in the
Conversion Price shall be required unless the adjustment would result in a
change of at least 1% in the Conversion Price as last adjusted; provided,
however, that any adjustments which by reason of this Section 5.07 are not
required to be made shall be carried forward and taken into account in any
subsequent adjustment, regardless of whether the aggregate adjustment is less
than 1% within one year of the first such adjustment carried forward upon
required purchases of the Securities in connection with a Fundamental Change and
five Business Days prior to the Final Maturity Date. All calculations under this
Article 5 shall be made to the nearest cent or to the nearest one-hundredth of a
share, as the case may be.

     Except as otherwise provided herein, no adjustment need be made for
issuances of Common Stock pursuant to a Company plan for reinvestment of
dividends or interest or for a change in the par value or a change to no par
value of the Common Stock.

     To the extent that the Securities become convertible into the right to
receive cash, no adjustment need be made thereafter as to the cash. Interest
will not accrue on the cash.

     Section 5.08. Adjustment for Tax Purposes.

     The Company shall be entitled to make such reductions in the Conversion
Price, for the remaining term of the Securities or any shorter term, in addition
to those required by Section 5.06, as the Board of Directors shall determine to
be advisable in order to avoid or diminish any tax to any holders of shares of
Common Stock or rights to purchase Common Stock resulting from any stock
dividends, subdivisions of shares, distributions of rights or warrants to
purchase or subscribe for stock or securities, distributions of securities
convertible into or exchangeable for stock hereafter made by the Company to its
stockholders or from any event treated as such for income tax purposes.

     Section 5.09. Temporary Reduction of Conversion Price.

     To the extent permitted by applicable law, the Company from time to time
may reduce the Conversion Price by any amount for any period of time if the
period is at least 20 Business

                                      -44-

<PAGE>

Days, the reduction is irrevocable during such period, and the Board of
Directors shall have made a determination that such reduction would be in the
best interest of the Company. Whenever the Conversion Price is reduced pursuant
to the preceding sentence, the Company shall provide notice of any reduction in
the Conversion Price to the Holders in the manner provided in Section 13.02,
with a copy to the Trustee and Conversion Agent, at least 15 days prior to the
date such reduced Conversion Price takes effect, and such notice shall state the
reduced Conversion Price and the period during which it will be in effect.

     Section 5.10. Notice of Certain Transactions.

     In the event that:

          (1) the Company takes any action which would require an adjustment in
the Conversion Price;

          (2) the Company consolidates or merges with, or transfers all or
substantially all of its property and assets to, another corporation and
shareholders of the Company must approve the transaction; or

          (3) there is a dissolution or liquidation of the Company,

     the Company shall mail to Holders and file with the Trustee a notice
stating the proposed record or effective date, as the case may be, and mail the
notice at least ten days before such date; provided, further, that upon
occurrence of an event referred to in clause (1) of this Section 5.10, the
Company shall file with the Trustee an Officers' Certificate briefly stating the
facts requiring the adjustment and the manner of computing it and promptly mail
to Securityholders a notice of the adjustment. Failure to mail such notice or
any defect therein shall not affect the validity of any transaction referred to
in clause (1), (2) or (3) of this Section 5.10; provided, however, that unless
and until the Trustee shall have received an Officer's Certificate setting forth
an adjustment of the Conversion Price in connection with the event referred to
in clause (1), the Trustee may assume without inquiry that the Conversion Price
has not been adjusted and that the last Conversion Price of which it has
knowledge remains in effect.

     Section 5.11. Effect of Reclassification, Consolidation, Merger or Sale on
Conversion Privilege.

     If any of the following shall occur, namely: (a) any reclassification or
change of shares of Common Stock issuable upon conversion of the Securities
(other than a change in par value, or from par value to no par value, or from no
par value to par value, or as a result of a subdivision or combination, or any
other change for which an adjustment is provided in Section 5.06); (b) any
consolidation or merger or combination to which the Company is a party other
than a merger in which the Company is the continuing corporation and which does
not result in any reclassification of, or change (other than in par value, or
from par value to no par value, or from no par value to par value, or as a
result of a subdivision or combination) in, outstanding shares of Common Stock;
or (c) any sale or conveyance as an entirety or substantially as an entirety of
the property and assets of the Company, directly or indirectly, to any person,
then the Company, or such successor, purchasing or transferee corporation, as
the

                                      -45-

<PAGE>

case may be, shall, as a condition precedent to such reclassification, change,
combination, consolidation, merger, sale or conveyance, execute and deliver to
the Trustee a supplemental indenture providing that the Holder of each Security
then outstanding shall have the right to convert such Security into cash and,
with respect to the portion of the Conversion Obligation in excess (if any) of
the principal amount of Securities being converted, the kind and amount of
shares of stock and other securities and property (including cash) receivable
upon such reclassification, change, combination, consolidation, merger, sale or
conveyance by a holder of the number of shares of Common Stock deliverable upon
conversion of such Security immediately prior to such reclassification, change,
combination, consolidation, merger, sale or conveyance. For purposes of the
foregoing, if holders of the Common Stock receive or have the right to receive
more than one form of consideration in connection with such reclassification,
change, combination, consolidation, merger, sale or conveyance, then the Company
shall make adequate provisions to give holders of the Securities, treated as a
single class, a reasonable opportunity to elect the form of such consideration
for purposes of determining the composition of consideration received, provided
that once the election is made, it shall apply to all holders of Securities
after the effective time of the transaction. Such supplemental indenture shall
provide for adjustments of the Conversion Price which shall be as nearly
equivalent as may be practicable to the adjustments of the Conversion Price
provided for in this Article 5. If, in the case of any such consolidation,
merger, combination, sale or conveyance, the stock or other securities and
property (including cash) receivable thereupon by a holder of Common Stock
include shares of stock or other securities and property of a person other than
the successor, purchasing or transferee corporation, as the case may be, in such
consolidation, merger, combination, sale or conveyance, then such supplemental
indenture shall also be executed by such other person and shall contain such
additional provisions to protect the interests of the Holders of the Securities
as the Board of Directors shall reasonably consider necessary by reason of the
foregoing. The provisions of this Section 5.11 shall similarly apply to
successive reclassifications, changes, combinations, consolidations, mergers,
sales or conveyances.

     In the event the Company shall execute a supplemental indenture pursuant to
this Section 5.11, the Company shall promptly file with the Trustee (x) an
Officers' Certificate briefly stating the reasons therefor, the kind or amount
of shares of stock or other securities or property (including cash) receivable
by Holders of the Securities upon the conversion of their Securities after any
such reclassification, change, combination, consolidation, merger, sale or
conveyance, any adjustment to be made with respect thereto and that all
conditions precedent have been complied with and (y) an Opinion of Counsel that
all conditions precedent have been complied with, and shall promptly mail notice
thereof to all Holders.

     Section 5.12. Trustee's Disclaimer.

     The Trustee shall have no duty to determine when an adjustment under this
Article 5 should be made, how it should be made or what such adjustment should
be, but may accept as conclusive evidence of that fact or the correctness of any
such adjustment, and shall be protected in relying upon, an Officers'
Certificate, including the Officers' Certificate with respect thereto which the
Company is obligated to file with the Trustee pursuant to Section 5.10. The
Trustee makes no representation as to the validity or value of any securities or
assets issued upon conversion of Securities, and the Trustee shall not be
responsible for the Company's failure to comply with any provisions of this
Article 5.

                                      -46-

<PAGE>

     The Trustee shall not be under any responsibility to determine the
correctness of any provisions contained in any supplemental indenture executed
pursuant to Section 5.11, but may accept as conclusive evidence of the
correctness thereof, and shall be fully protected in relying upon, the Officers'
Certificate with respect thereto which the Company is obligated to file with the
Trustee pursuant to Section 5.11.

     Section 5.13. Limitation on Adjustments.

     (a) The Company shall not take any action that would result in an
adjustment pursuant to the foregoing provisions in this Article 5 without
complying with the NASDAQ's shareholder approval rules.

     (b) The Company shall not take any action that would result in an
adjustment pursuant to the foregoing provisions in this Article 5 if that
adjustment would reduce the Conversion Price below the then par value of the
shares of Common Stock issuable upon conversion of the Securities.

                             ARTICLE 6 SUBORDINATION

     Section 6.01. Agreement of Subordination.

     The Company covenants and agrees, and each Holder of Securities issued
hereunder by its acceptance thereof likewise covenants and agrees, that all
Securities shall be issued subject to the provisions of this Article 6; and each
Person holding any Security, whether upon original issue or upon transfer,
assignment or exchange thereof, accepts and agrees to be bound by such
provisions.

     The payment of the principal of, and premium, if any, and interest on, and
the cash portion of the Conversion Obligation, if any, in respect of all
Securities (including, but not limited to, the Fundamental Change Purchase Price
with respect to the Securities subject to purchase in accordance with Article 3
as provided in this Indenture) issued hereunder shall, to the extent and in the
manner hereinafter set forth, be subordinated and subject in right of payment to
the prior payment in full, in cash or other payment satisfactory to the holders
of Senior Indebtedness, of all Senior Indebtedness, whether outstanding at the
date of this Indenture or thereafter incurred.

     No provision of this Article 6 shall prevent the occurrence of any default
or Event of Default hereunder.

     Section 6.02. Payments to Holders.

     No payment shall be made with respect to the principal of, or premium, if
any, the Cash portion of the Conversion Obligation, if any, or interest on, the
Securities except payments and distributions made by the Trustee as permitted by
the first or second paragraph of Section 6.05, if:

                                      -47-

<PAGE>

          (i) a default in the payment of principal, premium, if any, interest,
     rent or other obligations due on any Designated Senior Indebtedness occurs
     and is continuing (or, in the case of Designated Senior Indebtedness for
     which there is a period of grace, in the event of such a default that
     continues beyond the period of grace, if any, specified in the instrument
     or lease evidencing such Designated Senior Indebtedness), unless and until
     such default shall have been cured or waived or shall have ceased to exist;
     or

          (ii) a default, other than a payment default, on any Designated Senior
     Indebtedness occurs and is continuing that then permits holders of such
     Designated Senior Indebtedness to accelerate its maturity and the Trustee
     receives a notice of the default (a "PAYMENT BLOCKAGE NOTICE") from a
     Representative or holder of such Designated Senior Indebtedness or the
     Company.

     Subject to the provisions of Section 6.05, if the Trustee receives any
Payment Blockage Notice pursuant to clause (ii) above, no subsequent Payment
Blockage Notice shall be effective for purposes of this Section unless and until
at least 365 days shall have elapsed since the initial effectiveness of the
immediately prior Payment Blockage Notice and all scheduled payments on the
Securities that have come due have been paid in full in cash. No nonpayment
default that existed or was continuing on the date of delivery of any Payment
Blockage Notice to the Trustee (unless such default was waived, cured or
otherwise ceased to exist and thereafter subsequently reoccurred) shall be, or
be made, the basis for a subsequent Payment Blockage Notice.

     The Company may and shall resume payments on and distributions in respect
of the Securities upon the earlier of:

     (a) in the case of a default referred to in clause (i) above, the date upon
which the default is cured or waived or ceases to exist, or

     (b) in the case of a default referred to in clause (ii) above, the earlier
of the date on which such default is cured or waived or ceases to exist or 179
days pass after the date on which the applicable Payment Blockage Notice is
received, if the maturity of such Designated Senior Indebtedness has not been
accelerated, unless this Article 6 otherwise prohibits the payment or
distribution at the time of such payment or distribution.

     Upon any payment by the Company, or distribution of assets of the Company
of any kind or character, whether in cash, property or securities, to creditors
upon any dissolution or winding-up or liquidation or reorganization of the
Company (whether voluntary or involuntary) or in bankruptcy, insolvency,
receivership or similar proceedings, all amounts due or to become due upon all
Senior Indebtedness shall first be paid in full, in cash or other payment
satisfactory to the holders of such Senior Indebtedness, before any payment is
made on account of the principal of, and premium, if any, the cash portion of
the Conversion Obligation, if any, or interest on, the Securities (except
payments made pursuant to Article 11 from monies deposited with the Trustee
pursuant thereto prior to commencement of proceedings for such dissolution,
winding-up, liquidation or reorganization); and upon any such dissolution or
winding-up or liquidation or reorganization of the Company or bankruptcy,
insolvency, receivership or similar proceeding, any payment by the Company, or
distribution of assets of the Company of any kind or character, whether in cash,
property or securities, to which the Holders of the Securities or the

                                      -48-

<PAGE>

Trustee would be entitled, except for the provision of this Article 6, shall
(except as aforesaid) be paid by the Company or by any receiver, trustee in
bankruptcy, liquidating trustee, agent or other Person making such payment or
distribution, or by the Holders of the Securities or by the Trustee under this
Indenture, if received by them or it, directly to the holders of Senior
Indebtedness (pro rata to such holders on the basis of the respective amounts of
Senior Indebtedness held by such holders, or as otherwise required by law or a
court order) or their representative or representatives, or to the trustee or
trustees under any indenture pursuant to which any instruments evidencing any
Senior Indebtedness may have been issued, as their respective interests may
appear, to the extent necessary to pay all Senior Indebtedness in full, in cash
or other payment satisfactory to the holders of such Senior Indebtedness, after
giving effect to any concurrent payment or distribution to or for the holders of
Senior Indebtedness, before any payment or distribution is made to the Holders
of the Securities or to the Trustee.

     For purposes of this Article 6, the words, "cash, property or securities"
shall not be deemed to include shares of stock of the Company, as reorganized or
readjusted, or securities of the Company or any other corporation provided for
by a plan of reorganization or readjustment, the payment of which is
subordinated at least to the extent provided in this Article 6 with respect to
the Securities to the payment of all Senior Indebtedness which may at the time
be outstanding; provided that (i) the Senior Indebtedness is assumed by the new
corporation, if any, resulting from any reorganization or readjustment and (ii)
the rights of the holders of Senior Indebtedness (other than leases which are
not assumed by the Company or the new corporation, as the case may be) are not,
without the consent of such holders, altered by such reorganization or
readjustment. The consolidation of the Company with, or the merger of the
Company into, another corporation or the liquidation or dissolution of the
Company following the conveyance, transfer or lease of its property as an
entirety, or substantially as an entirety, to another corporation upon the terms
and conditions provided for in Article 8 shall not be deemed a dissolution,
winding-up, liquidation or reorganization for the purposes of this Section 6.02
if such other corporation shall, as a part of such consolidation, merger,
conveyance, transfer or lease, comply with the conditions stated in Article 8.

     In the event of the acceleration of the Securities because of an Event of
Default, no payment or distribution shall be made to the Trustee or any Holder
of Securities in respect of the principal of, and premium, if any, the cash
portion of the Conversion Obligation, if any, or interest on, the Securities by
the Company (including, but not limited to, the Fundamental Change Purchase
Price with respect to the Securities subject to purchase in accordance with
Article 3 as provided in this Indenture), except payments and distributions made
by the Trustee as permitted by Section 6.05, until all Senior Indebtedness has
been paid in full in cash or other payment satisfactory to the holders of such
Senior Indebtedness or such acceleration is rescinded in accordance with the
terms of this Indenture. If payment of the Securities is accelerated because of
an Event of Default, the Company shall promptly notify holders of Senior
Indebtedness of such acceleration.

     In the event that, notwithstanding the foregoing provisions, any payment or
distribution of assets of the Company of any kind or character, whether in cash,
property or securities (including, without limitation, by way of setoff or
otherwise), prohibited by the foregoing, shall be received by the Trustee or the
Holders of the Securities before all Senior Indebtedness is paid in full, in
cash or other payment satisfactory to the holders of such Senior Indebtedness,
or

                                      -49-

<PAGE>

provision is made for such payment thereof in accordance with its terms in cash
or other payment satisfactory to the holders of such Senior Indebtedness, such
payment or distribution shall be held in trust for the benefit of and shall be
paid over or delivered to the holders of Senior Indebtedness or their
representative or representatives, or to the trustee or trustees under any
indenture pursuant to which any instruments evidencing any Senior Indebtedness
may have been issued, as their respective interests may appear, as calculated by
the Company, for application to the payment of all Senior Indebtedness remaining
unpaid to the extent necessary to pay all Senior Indebtedness in full, in cash
or other payment satisfactory to the holders of Senior Indebtedness, after
giving effect to any concurrent payment or distribution to or for the holders of
such Senior Indebtedness.

     Nothing in this Section 6.02 shall apply to claims of, or payments to, the
Trustee under or pursuant to Section 10.07. This Section 6.02 shall be subject
to the further provisions of Section 6.05.

     Section 6.03. Subrogation of Securities.

     Subject to the payment in full, in cash or other payment satisfactory to
the holders of Senior Indebtedness, of all Senior Indebtedness, the rights of
the Holders of the Securities shall be subrogated to the extent of the payments
or distributions made to the holders of such Senior Indebtedness pursuant to the
provisions of this Article 6 (equally and ratably with the holders of all
indebtedness of the Company which by its express terms is subordinated to other
indebtedness of the Company to substantially the same extent as the Securities
are subordinated and is entitled to like rights of subrogation) to the rights of
the holders of Senior Indebtedness to receive payments or distributions of cash,
property or securities of the Company applicable to the Senior Indebtedness
until the principal of, and premium, if any, the cash portion of the Conversion
Obligation, if any, and interest on, the Securities shall be paid in full, in
cash or other payment satisfactory to the holders of Senior Indebtedness; and,
for the purposes of such subrogation, no payments or distributions to the
holders of the Senior Indebtedness of any cash, property or securities to which
the Holders of the Securities or the Trustee would be entitled except for the
provisions of this Article 6, and no payment over, pursuant to the provisions of
this Article 6, to or for the benefit of the holders of Senior Indebtedness by
Holders of the Securities or the Trustee shall, as between the Company, its
creditors other than holders of Senior Indebtedness and the Holders of the
Securities, be deemed to be a payment by the Company to or on account of the
Senior Indebtedness; and no payments or distributions of cash, property or
securities to or for the benefit of the Holders of the Securities pursuant to
the subrogation provisions of this Article 6, which would otherwise have been
paid to the holders of Senior Indebtedness, shall be deemed to be a payment by
the Company to or for the account of the Securities. It is understood that the
provisions of this Article 6 are and are intended solely for the purposes of
defining the relative rights of the Holders of the Securities, on the one hand,
and the holders of the Senior Indebtedness, on the other hand.

     Nothing contained in this Article 6 or elsewhere in this Indenture or in
the Securities is intended to or shall impair, as among the Company, its
creditors other than the holders of Senior Indebtedness and the Holders of the
Securities, the obligation of the Company, which is absolute and unconditional,
to pay to the Holders of the Securities the principal of, and premium, if any,
the cash portion of the Conversion Obligation, if any, and any interest on the
Securities as and

                                      -50-

<PAGE>

when the same shall become due and payable in accordance with their terms, or is
intended to or shall affect the relative rights of the Holders of the Securities
and creditors of the Company other than the holders of the Senior Indebtedness,
nor shall anything herein or therein prevent the Trustee or the Holder of any
Security from exercising all remedies otherwise permitted by applicable law upon
default under this Indenture, subject to the rights, if any, under this Article
6 of the holders of Senior Indebtedness in respect of cash, property or
securities of the Company received upon the exercise of any such remedy.

     Upon any payment or distribution of assets of the Company referred to in
this Article 6, the Trustee, subject to the provisions of Section 10.01, and the
Holders of the Securities shall be entitled to rely upon any order or decree
made by any court of competent jurisdiction in which such bankruptcy,
dissolution, winding-up, liquidation or reorganization proceedings are pending,
or a certificate of the receiver, trustee in bankruptcy, liquidating trustee,
agent or other person making such payment or distribution, delivered to the
Trustee or to the Holders of the Securities, for the purpose of ascertaining the
persons entitled to participate in such distribution, the holders of the Senior
Indebtedness and other indebtedness of the Company, the amount thereof or
payable thereon and all other facts pertinent thereto or to this Article 6.

     Section 6.04. Authorization to Effect Subordination.

     Each Holder of a Security by the Holder's acceptance thereof authorizes and
directs the Trustee on the Holder's behalf to take such action as may be
necessary or appropriate to effectuate the subordination as provided in this
Article 6 and appoints the Trustee to act as the Holder's attorney-in-fact for
any and all such purposes. If the Trustee does not file a proper proof of claim
or proof of debt in the form required in any proceeding referred to in Section
6.03 hereof at least 30 days before the expiration of the time to file such
claim, the holders of any Senior Indebtedness or their representatives are
hereby authorized to file an appropriate claim for and on behalf of the Holders
of the Securities.

     Section 6.05. Notice to Trustee.

     The Company shall give prompt written notice in the form of an Officers'
Certificate to a Trust Officer of the Trustee and to any Paying Agent of any
fact known to the Company which would prohibit the making of any payment of
monies to or by the Trustee or any Paying Agent in respect of the Securities
pursuant to the provisions of this Article 6. Notwithstanding the provisions of
this Article 6 or any other provision of this Indenture, the Trustee shall not
be charged with knowledge of the existence of any facts which would prohibit the
making of any payment of monies to or by the Trustee in respect of the
Securities pursuant to the provisions of this Article 6, unless and until a
Trust Officer of the Trustee shall have received written notice thereof at the
Corporate Trust Office from the Company (in the form of an Officers'
Certificate) or a Representative or a holder or holders of Senior Indebtedness
or from any trustee thereof; and before the receipt of any such written notice,
the Trustee, subject to the provisions of Section 10.01, shall be entitled in
all respects to assume that no such facts exist; provided that, if on a date not
less than one Business Day prior to the date upon which by the terms hereof any
such monies may become payable for any purpose (including, without limitation,
the payment of the principal of, or premium, if any, or interest on, any
Security) the Trustee shall not have received, with respect to such monies, the
notice provided for in this Section 6.05, then, anything

                                      -51-

<PAGE>

herein contained to the contrary notwithstanding, the Trustee shall have full
power and authority to receive such monies and to apply the same to the purpose
for which they were received and shall not be affected by any notice to the
contrary which may be received by it on or after such prior date.
Notwithstanding anything in this Article 6 to the contrary, nothing shall
prevent any payment by the Trustee to the Holders of monies deposited with it
pursuant to Article 11, and any such payment shall not be subject to the
provisions of Article 6.

     The Trustee, subject to the provisions of Section 10.01, shall be entitled
to rely on the delivery to it of a written notice by a Representative or a
person representing himself to be a holder of Senior Indebtedness (or a trustee
on behalf of such holder) to establish that such notice has been given by a
Representative or a holder of Senior Indebtedness or a trustee on behalf of any
such holder or holders. In the event that the Trustee determines in good faith
that further evidence is required with respect to the right of any person as a
holder of Senior Indebtedness to participate in any payment or distribution
pursuant to this Article 6, the Trustee may request such Person to furnish
evidence to the reasonable satisfaction of the Trustee as to the amount of
Senior Indebtedness held by such Person, the extent to which such Person is
entitled to participate in such payment or distribution and any other facts
pertinent to the rights of such Person under this Article 6, and if such
evidence is not furnished the Trustee may defer any payment to such Person
pending judicial determination as to the right of such Person to receive such
payment.

     Section 6.06. Trustee's Relation to Senior Indebtedness.

     The Trustee in its individual capacity shall be entitled to all the rights
set forth in this Article 6 in respect of any Senior Indebtedness at any time
held by it, to the same extent as any other holder of Senior Indebtedness, and
nothing in Section 10.11 or elsewhere in this Indenture shall deprive the
Trustee of any of its rights as such holder.

     With respect to the holders of Senior Indebtedness, the Trustee undertakes
to perform or to observe only such of its covenants and obligations as are
specifically set forth in this Article 6, and no implied covenants or
obligations with respect to the holders of Senior Indebtedness shall be read
into this Indenture against the Trustee. The Trustee shall not be deemed to owe
any fiduciary duty to the holders of Senior Indebtedness, and, subject to the
provisions of Section 10.01, the Trustee shall not be liable to any holder of
Senior Indebtedness if it shall pay over or deliver to Holders of Securities,
the Company or any other person money or assets to which any holder of Senior
Indebtedness shall be entitled by virtue of this Article 6 or otherwise.

     Section 6.07. No Impairment of Subordination.

     No right of any present or future holder of any Senior Indebtedness to
enforce subordination as herein provided shall at any time in any way be
prejudiced or impaired by any act or failure to act on the part of the Company
or by any act or failure to act, in good faith, by any such holder or by any
noncompliance by the Company with the terms, provisions and covenants of this
Indenture, regardless of any knowledge thereof which any such holder may have or
otherwise be charged with.

                                      -52-
<PAGE>

     Section 6.08. Certain Conversions Deemed Payment.

     For the purposes of this Article 6 only, (1) the issuance and delivery of
junior securities upon conversion of Securities in accordance with Article 5
shall not be deemed to constitute a payment or distribution on account of the
principal of, or premium, if any, the cash portion of the Conversion Obligation,
if any, or interest on, Securities or on account of the purchase or other
acquisition of Securities, and (2) the payment, issuance or delivery of cash
(except in satisfaction of fractional shares pursuant to Section 5.03), property
or securities (other than junior securities) upon conversion of a Security shall
be deemed to constitute payment on account of the principal of such Security.
For the purposes of this Section 6.08, the term "JUNIOR SECURITIES" means (a)
shares of any stock of any class of the Company or (b) securities of the Company
which are subordinated in right of payment to all Senior Indebtedness which may
be outstanding at the time of issuance or delivery of such securities to
substantially the same extent as, or to a greater extent than, the Securities
are so subordinated as provided in this Article. Nothing contained in this
Article 6 or elsewhere in this Indenture or in the Securities is intended to or
shall impair, as among the Company, its creditors other than holders of Senior
Indebtedness and the Holders, the right, which is absolute and unconditional, of
the Holder of any Security to convert such Security in accordance with Article
5.

     Section 6.09. Article Applicable to Paying Agents.

     If at any time any Paying Agent other than the Trustee shall have been
appointed by the Company and be then acting hereunder, the term "Trustee" as
used in this Article shall (unless the context otherwise requires) be construed
as extending to and including such Paying Agent within its meaning as fully for
all intents and purposes as if such Paying Agent were named in this Article in
addition to or in place of the Trustee; provided, however, that the first
paragraph of Section 6.05 shall not apply to the Company or any Affiliate of the
Company if it or such Affiliate acts as Paying Agent.

     Section 6.10. Senior Indebtedness Entitled to Rely.

     The holders of Senior Indebtedness (including, without limitation,
Designated Senior Indebtedness) shall have the right to rely upon this Article
6, and no amendment or modification of the provisions contained herein shall
diminish the rights of such holders unless such holders shall have agreed in
writing thereto.

                               ARTICLE 7 COVENANTS

     Section 7.01. Payment of Securities.

     The Company shall promptly make all payments in respect of the Securities
on the dates and in the manner provided in the Securities and this Indenture. An
installment of principal or interest shall be considered paid on the date it is
due if the Paying Agent (other than the Company) holds by 11:00 a.m., New York
City time, on that date money, deposited by the Company or an Affiliate thereof,
sufficient to pay such installment. The Company shall (in immediately available
funds), to the fullest extent permitted by law, pay interest on overdue

                                      -53-

<PAGE>

principal (including premium, if any) and overdue installments of interest at
the rate borne by the Securities per annum.

     Payment of the principal of (and premium, if any) and interest on the
Securities shall be made at the office or agency of the Company maintained for
that purpose in Chicago, Illinois (which shall initially be LaSalle Bank
National Association), or at the Corporate Trust Office of the Trustee in such
coin or currency of the United States of America as at the time of payment is
legal tender for payment of public and private debts; provided, however, that at
the option of the Company payment of interest may be made by check mailed to the
address of the Person entitled thereto as such address appears in the Register;
provided, further, that a Holder holding an aggregate principal amount of the
Securities in excess of $2,000,000 will be paid by wire transfer in immediately
available funds at the election of such Holder if such Holder has provided wire
transfer instructions to the Company at least 10 Business Days prior to the
payment date.

     Section 7.02. SEC Reports.

     The Company will file with the SEC (so long as the SEC will accept any such
filings) and the Trustee the annual reports, quarterly reports and other
documents required to be filed with the SEC pursuant to Sections 13 and 15 of
the Exchange Act, whether or not the Company has a class of securities
registered under the Exchange Act, provided reports filed via EDGAR (and
electronically or otherwise noticed to the Trustee) are deemed to be filed with
the Trustee. The Company will also comply with the other provisions of Section
314(a) of the Trust Indenture Act.

     Delivery of such reports, information and documents to the Trustee is for
informational purposes only, and the Trustee's receipt of such shall not
constitute constructive notice of any information contained therein or
determinable from information contained therein, including the Company's
compliance with any of its covenants hereunder (as to which the Trustee is
entitled to rely exclusively on Officers' Certificates).

     Section 7.03. Maintenance of Listing.

     So long as any Securities are outstanding and the Common Stock is publicly
traded, the Company will not voluntarily delist the Common Stock from NASDAQ or
any other U.S. national securities exchange on which the Common Stock is then
listed.

     Section 7.04. Compliance Certificates.

     The Company shall deliver to the Trustee, within 90 days after the end of
each fiscal year of the Company (beginning with the fiscal year ending March 31,
2007), an Officers' Certificate as to the signer's knowledge of the Company's
compliance with all conditions and covenants on its part contained in this
Indenture and stating whether or not the signer knows of any default or Event of
Default. If such signer knows of such a default or Event of Default, the
Officers' Certificate shall describe the default or Event of Default and the
efforts to remedy the same. For the purposes of this Section 7.04, compliance
shall be determined without regard to any grace period or requirement of notice
provided pursuant to the terms of this Indenture.

                                      -54-

<PAGE>

     Section 7.05. Liquidated Damages Notice.

     In the event that the Company is required to pay Liquidated Damages to
Holders of Securities pursuant to any Registration Rights Agreement, the Company
will provide a direction or order in the form of a written notice ("LIQUIDATED
DAMAGES NOTICE") to the Trustee (and if the Trustee is not the Paying Agent, the
Paying Agent) of the Company's obligation to pay Liquidated Damages no later
than five Business Days prior to the proposed payment date set for the payment
of Liquidated Damages, and the Liquidated Damages Notice shall set forth the
amount of Liquidated Damages to be paid by the Company on such payment date and
direct the Trustee (or, if the Trustee is not the Paying Agent, the Paying
Agent) to make payment to the extent it receives funds from the Company to do
so.

     Section 7.06. Rule 144A Information Requirements.

     Within the period prior to the expiration of the holding period applicable
to sales of the Securities under Rule 144(k) under the Securities Act (or any
successor provision), the Company covenants and agrees that it shall, during any
period in which it is not subject to Section 13 or 15(d) under the Exchange Act,
upon the request of any Holder or beneficial holder of the Securities or any
Common Stock issued upon conversion thereof bearing a Restricted Security Legend
or Restricted Sock Legend, as the case may be, make available to such Holder or
beneficial holder of such Securities or any Common Stock issued upon conversion
thereof in connection with any sale thereof and any prospective purchaser of
Securities or such Common Stock designated by such Holder or beneficial holder,
the information required pursuant to Rule 144A(d)(4) under the Securities Act
and it will take such further action as any Holder or beneficial holder of such
Securities or such Common Stock may reasonably request, all to the extent
required from time to time to enable such Holder or beneficial holder to sell
its Securities or Common Stock without registration under the Securities Act
within the limitation of the exemption provided by Rule 144A, as such Rule may
be amended from time to time. Upon the request of any Holder or any beneficial
holder of the Securities or such Common Stock, the Company will deliver to such
Holder a written statement as to whether such Holder and prospective purchaser
have complied with such requirements.

     Section 7.07. Further Instruments and Acts.

     Upon request of the Trustee, the Company will execute and deliver such
further instruments and do such further acts as may be reasonably necessary or
proper to carry out more effectively the purposes of this Indenture.

     Section 7.08. Maintenance of Corporate Existence.

     Subject to Article 8, the Company will do or cause to be done all things
necessary to preserve and keep in full force and effect its corporate existence.

     Section 7.09. Stay, Extension and Usury Laws.

     The Company covenants (to the extent that it may lawfully do so) that it
shall not at any time insist upon, plead, or in any manner whatsoever claim or
take the benefit or advantage of,

                                      -55-

<PAGE>

any stay, extension or usury law or other law which would prohibit or forgive
the Company from paying all or any portion of the principal of, or premium, if
any, or interest on, the Securities as contemplated herein, wherever enacted,
now or at any time hereafter in force, or which may affect the covenants or the
performance of this Indenture, and the Company (to the extent it may lawfully do
so) hereby expressly waives all benefit or advantage of any such law and
covenants that it will not, by resort to any such law, hinder, delay or impede
the execution of any power herein granted to the Trustee, but will suffer and
permit the execution of every such power as though no such law had been enacted.

         ARTICLE 8 CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE

     Section 8.01. Company May Consolidate, etc., only on Certain Terms.

     The Company shall not consolidate with or merge into any other Person (in a
transaction in which the Company is not the surviving corporation) or convey,
transfer or lease its properties and assets substantially as an entirety to any
Person, unless:

     (1) in case the Company shall consolidate with or merge into another Person
(in a transaction in which the Company is not the surviving corporation) or
convey, transfer or lease its properties and assets substantially as an entirety
to any Person, the Person formed by such consolidation or into which the Company
is merged or the Person which acquires by conveyance or transfer, or which
leases, the properties and assets of the Company substantially as an entirety
shall be a corporation organized and validly existing under the laws of the
United States of America, any State thereof or the District of Columbia and
shall expressly assume, by an indenture supplemental hereto, executed and
delivered to the Trustee, in form satisfactory to the Trustee, the due and
punctual payment of the principal of, and premium, if any, and interest on, all
the Securities and the performance or observance of every covenant of this
Indenture on the part of the Company to be performed or observed, and the
conversion rights shall be provided for in accordance with Article 5, by
supplemental indenture satisfactory in form to the Trustee, executed and
delivered to the Trustee, by the Person (if other than the Company) formed by
such consolidation or into which the Company shall have been merged or by the
Person which shall have acquired the Company's assets;

     (2) immediately after giving effect to such transaction, no Event of
Default, and no event which, after notice or lapse of time or both, would become
an Event of Default, shall have happened and be continuing; and

     (3) the Company has delivered to the Trustee an Officers' Certificate and
an Opinion of Counsel, each stating that such consolidation, merger, conveyance,
transfer or lease and, if a supplemental indenture is required in connection
with such transaction, such supplemental indenture comply with this Article and
that all conditions precedent herein provided for relating to such transaction
have been complied with.

     Section 8.02. Successor Substituted.

     Upon any consolidation of the Company with, or merger of the Company into,
any other Person or any conveyance, transfer or lease of the properties and
assets of the Company

                                      -56-

<PAGE>

substantially as an entirety in accordance with Section 8.01, the successor
Person formed by such consolidation or into which the Company is merged or to
which such conveyance, transfer or lease is made shall succeed to, and be
substituted for, and may exercise every right and power of, the Company under
this Indenture with the same effect as if such successor Person had been named
as the Company herein, and thereafter, except in the case of a lease, the
predecessor Person shall be relieved of all obligations and covenants under this
Indenture and the Securities.

                         ARTICLE 9 DEFAULT AND REMEDIES

     Section 9.01. Events of Default.

     An "EVENT OF DEFAULT" with respect to Securities shall occur if:

     (a) the Company defaults in the payment of interest (including any
Liquidated Damages) when the same becomes due and payable and the default
continues for a period of 30 days, whether or not such payment shall be
prohibited by the provisions of Article 6 hereof;

     (b) the Company defaults in the payment of any principal of (including,
without limitation, premium, if any, on) any Security when the same becomes due
and payable (whether at maturity, on a Fundamental Change Purchase Date or
otherwise), whether or not such payment shall be prohibited by the provisions of
Article 6 hereof;

     (c) the Company defaults in the payment of Cash or shares of Common Stock
(if any) upon conversion of any Security (including any additional shares), when
the same becomes due and payable, and the failure continues for 5 Business Days;

     (d) the Company fails to comply with any of its other agreements contained
in the Securities or in this Indenture and the default continues for the period
and after the notice specified below;

     (e) the Company defaults in the payment of the purchase price of any
Security when the same becomes due and payable, whether or not such payment
shall be prohibited by the provisions of Article 6 hereof;

     (f) the Company fails to provide a Fundamental Change Purchase Notice when
required by Section 3.01, and such failure continues for 5 Business Days;

     (g) the Company or any Significant Subsidiary of the Company fails to pay
at final maturity of an Instrument (either at its stated maturity or upon
acceleration thereof) with a principal amount then outstanding in excess of $10
million, whether such indebtedness now exists or shall hereafter be created, and
such indebtedness is not discharged, or such default in payment or acceleration
is not cured or rescinded, within a period of 30 days after there shall have
been given, by registered or certified mail, to the Company by the Trustee or to
the Company and the Trustee by the Holders of at least 25% in aggregate
principal amount of the outstanding Securities a written notice specifying such
default and requiring the Company to cause such indebtedness to be discharged or
cause such default to be cured or waived or such

                                      -57-

<PAGE>

acceleration to be rescinded or annulled and stating that such notice is a
"Notice of Default" hereunder;

     (h) the Company or any Significant Subsidiary of the Company fails to pay
one or more final and non-appealable judgments entered by a court or courts of
competent jurisdiction, the aggregate uninsured or unbonded portion of which is
in excess of $10 million, if the judgments are not paid, discharged or stayed
within 60 days;

     (i) the Company or any Significant Subsidiary of the Company, pursuant to
or within the meaning of any Bankruptcy Law:

          (i) commences a voluntary case or proceeding;

          (ii) consents to the entry of an order for relief against it in an
     involuntary case or proceeding;

          (iii) consents to the appointment of a Custodian of it or for all or
     substantially all of its property; or

          (iv) makes a general assignment for the benefit of its creditors; or

     (j) a court of competent jurisdiction enters an order or decree under any
Bankruptcy Law that:

          (i) is for relief against the Company or any Significant Subsidiary of
     the Company in an involuntary case or proceeding;

          (ii) appoints a Custodian of the Company or any Significant Subsidiary
     of the Company for all or substantially all of the property of the Company
     or any such Significant Subsidiary; or

          (iii) orders the liquidation of the Company or any Significant
     Subsidiary of the Company;

and in each case the order or decree remains unstayed and in effect for 60
consecutive days.

     The term "BANKRUPTCY LAW" means Title 11 of the United States Code (or any
successor thereto) or any similar federal or state law for the relief of
debtors. The term "CUSTODIAN" means any receiver, trustee, assignee, liquidator,
sequestrator or similar official under any Bankruptcy Law.

     A default under clause (d) above is not an Event of Default until the
Trustee notifies the Company, or the Holders of at least 25% in aggregate
principal amount of the Securities then outstanding notify the Company and the
Trustee, in writing of the default, and the Company does not cure the default
within 60 days after receipt of such notice. The notice given pursuant to this
Section 9.01 must specify the default, demand that it be remedied and state that
the notice is a "Notice of Default." When any default under this Section 9.01 is
cured, it ceases.

                                      -58-

<PAGE>

     The Trustee shall not be charged with knowledge of any Event of Default
unless written notice thereof shall have been given to a Trust Officer at the
Corporate Trust Office of the Trustee by the Company, a Paying Agent, any Holder
or any agent of any Holder.

     Section 9.02. Acceleration.

     If an Event of Default (other than an Event of Default specified in clause
(i) or (j) of Section 9.01) occurs and is continuing with respect to any
Securities, the Trustee may, by notice to the Company, or the Holders of at
least 25% in aggregate principal amount of the Securities then outstanding may,
by notice to the Company and the Trustee, declare all unpaid principal to the
date of acceleration on the Securities then outstanding (if not then due and
payable) to be due and payable upon any such declaration, and the same shall
become and be immediately due and payable. If an Event of Default specified in
clause (i) or (j) of Section 9.01 occurs, all unpaid principal of the Securities
then outstanding shall ipso facto become and be immediately due and payable
without any declaration or other act on the part of the Trustee or any Holder.
The Holders of a majority in aggregate principal amount of the Securities then
outstanding by notice to the Trustee may rescind an acceleration of Securities
and its consequences if (a) all existing Events of Default, other than the
nonpayment of the principal of the Securities which has become due solely by
such declaration of acceleration, have been cured or waived; (b) to the extent
the payment of such interest is lawful, interest (calculated at the rate of 2%
per annum in excess of the then applicable interest rate on the Securities) on
overdue installments of interest and overdue principal, which has become due
otherwise than by such declaration of acceleration, has been paid; (c) the
rescission would not conflict with any judgment or decree of a court of
competent jurisdiction; and (d) all payments due to the Trustee and any
predecessor Trustee under Section 10.07 have been made. No such rescission shall
affect any subsequent default or impair any right consequent thereto.

     Section 9.03. Other Remedies.

     If an Event of Default with respect to Securities occurs and is continuing,
the Trustee may, but shall not be obligated to, pursue any available remedy by
proceeding at law or in equity to collect the payment of the principal of, or
premium, if any, or any interest on, the Securities or to enforce the
performance of any provision of the Securities or this Indenture.

     The Trustee may maintain a proceeding even if it does not possess any of
the Securities or does not produce any of them in the proceeding. A delay or
omission by the Trustee or any Securityholder in exercising any right or remedy
accruing upon an Event of Default shall not impair the right or remedy or
constitute a waiver of or acquiescence in the Event of Default. No remedy is
exclusive of any other remedy. All available remedies are cumulative to the
extent permitted by law.

     Section 9.04. Waiver of Defaults and Events of Default.

     Subject to Section 9.07 and 12.02, the Holders of a majority in aggregate
principal amount of the Securities then outstanding by notice to the Trustee may
waive an existing default or Event of Default and its consequence, except a
default or Event of Default in the payment of the principal of, or premium, if
any, or interest on, any Security, a failure by the Company to

                                      -59-

<PAGE>

convert any Securities into Cash or shares of Common Stock, if any, or any
default or Event of Default in respect of any provision of this Indenture or the
Securities which, under Section 12.02, cannot be modified or amended without the
consent of the Holder of each Security affected. When a default or Event of
Default is waived, it is cured and ceases.

     Section 9.05. Control by Majority.

     The Holders of a majority in aggregate principal amount of the Securities
then outstanding may direct the time, method and place of conducting any
proceeding for any remedy available to the Trustee or exercising any trust or
power conferred on it. However, the Trustee may refuse to follow any direction
that conflicts with law or this Indenture, that the Trustee determines may be
unduly prejudicial to the rights of another Holder or the Trustee or that may
involve the Trustee in personal liability unless the Trustee is offered
indemnity satisfactory to it; provided, however, that the Trustee may take any
other action deemed proper by the Trustee which is not inconsistent with such
direction.

     Section 9.06. Limitations on Suits.

     A Holder of a Security may not pursue any remedy with respect to this
Indenture or the Securities (except actions for payment of overdue principal,
premium, if any, or interest or for the conversion of the Securities pursuant to
Article 5) unless:

     (a) the Holder gives to the Trustee written notice of a continuing Event of
Default;

     (b) the Holders of at least 25% in aggregate principal amount of the then
outstanding Securities make a written request to the Trustee to pursue the
remedy;

     (c) such Holder or Holders offer to the Trustee reasonable indemnity to the
Trustee against any loss, liability or expense;

     (d) the Trustee does not comply with the request within 60 days after
receipt of the request and the offer of indemnity; and

     (e) no direction inconsistent with such written request has been given to
the Trustee during such 60-day period by the Holders of a majority in aggregate
principal amount of the Securities then outstanding.

     A Securityholder may not use this Indenture to prejudice the rights of
another Securityholder or to obtain a preference or priority over such other
Securityholder.

     Section 9.07. Rights of Holders to Receive Payment and to Convert.

     Notwithstanding any other provision of this Indenture, the right of any
Holder of a Security to receive payment of the principal of, premium, if any,
and interest on, the Security, on or after the respective due dates expressed in
the Security and this Indenture, to convert such Security in accordance with
Article 5 and to bring suit for the enforcement of any such payment on or after
such respective dates or the right to convert, is absolute and unconditional and
shall not be impaired or affected without the consent of the Holder.

                                      -60-

<PAGE>

     Section 9.08. Collection Suit by Trustee.

     If an Event of Default in the payment of principal, premium, if any, or
interest specified in clause (a) or (b) of Section 9.01 occurs and is
continuing, the Trustee may recover judgment in its own name and as trustee of
an express trust against the Company or another obligor on the Securities for
the whole amount of principal, premium, if any, and accrued interest remaining
unpaid, together with, to the extent that payment of such interest is lawful,
interest on overdue principal, on overdue premium, if any, on overdue
installments of interest, in each case at the rate of 2% per annum in excess of
the then applicable interest rate on the Securities to the extent lawful, and
such further amount as shall be sufficient to cover the costs and expenses of
collection, including the reasonable compensation, expenses, disbursements and
advances of the Trustee, its agents and counsel.

     Section 9.09. Trustee May File Proofs of Claim.

     The Trustee may file such proofs of claim and other papers or documents as
may be necessary or advisable in order to have the claims of the Trustee
(including any claim for the reasonable compensation, expenses, disbursements
and advances of the Trustee, its agents and counsel) and the Holders allowed in
any judicial proceedings relative to the Company (or any other obligor on the
Securities), its creditors or its property and shall be entitled and empowered
to collect and receive any money or other property payable or deliverable on any
such claims and to distribute the same, and any Custodian in any such judicial
proceeding is hereby authorized by each Holder to make such payments to the
Trustee and, in the event that the Trustee shall consent to the making of such
payments directly to the Holders, to pay to the Trustee any amount due to it for
the reasonable compensation, expenses, disbursements and advances of the
Trustee, its agents and counsel and any other amounts due the Trustee under
Section 10.07, and to the extent that such payment of the reasonable
compensation, expenses, disbursements and advances in any such proceedings shall
be denied for any reason, payment of the same shall be secured by a lien on, and
shall be paid out of, any and all distributions, dividends, money, securities
and other property which the Holders may be entitled to receive in such
proceedings, whether in liquidation or under any plan of reorganization or
arrangement or otherwise. Nothing herein contained shall be deemed to authorize
the Trustee to authorize or consent to, or, on behalf of any Holder, to
authorize, accept or adopt, any plan of reorganization, arrangement, adjustment
or composition affecting the Securities or the rights of any Holder thereof or
to authorize the Trustee to vote in respect of the claim of any Holder in any
such proceeding.

     Section 9.10. Priorities.

     If the Trustee collects any money pursuant to this Article 9, it shall pay
out the money in the following order:

     First, to the Trustee for amounts due under Section 10.07;

     Second, to the holders of Senior Indebtedness to the extent required by
Article 6;

                                      -61-

<PAGE>

     Third, to Holders for amounts due and unpaid on the Securities for
principal, premium, if any, and interest ratably, without preference or priority
of any kind, according to the amounts due and payable on the Securities for
principal, premium, if any, and interest, respectively; and

     Fourth, the balance, if any, to the Company.

     The Trustee may fix a record date and payment date for any payment to
Holders pursuant to this Section 9.10.

     Section 9.11. Undertaking for Costs.

     In any suit for the enforcement of any right or remedy under this Indenture
or in any suit against the Trustee for any action taken or omitted by it as
Trustee, a court in its discretion may require the filing by any party litigant
in the suit of an undertaking to pay the costs of the suit, and the court in its
discretion may assess reasonable costs, including reasonable attorneys' fees and
expenses, against any party litigant in the suit, having due regard to the
merits and good faith of the claims or defenses made by the party litigant. This
Section 9.11 does not apply to a suit made by the Trustee, a suit by a Holder
pursuant to Section 9.07 or a suit by Holders of more than 10% in aggregate
principal amount of the Securities then outstanding.

                               ARTICLE 10 TRUSTEE

     Section 10.01. Duties of Trustee.

     (a) If an Event of Default has occurred and is continuing, the Trustee
shall exercise such of the rights and powers vested in it by this Indenture and
use the same degree of care and skill in its exercise as a prudent person would
exercise or use under the circumstances in the conduct of his or her own
affairs.

     (b) Except during the continuance of an Event of Default:

          (i) the Trustee need perform only those duties as are specifically set
     forth in this Indenture and no others; and

          (ii) in the absence of bad faith on its part, the Trustee may
     conclusively rely, as to the truth of the statements and the correctness of
     the opinions expressed therein, upon certificates or opinions furnished to
     the Trustee and conforming to the requirements of this Indenture. The
     Trustee, however, shall examine any certificates and opinions which by any
     provision hereof are specifically required to be delivered to the Trustee
     to determine whether or not they conform to the requirements of this
     Indenture.

     (c) The Trustee may not be relieved from liability for its own negligent
action, its own negligent failure to act or its own willful misconduct, except
that:

          (i) this paragraph does not limit the effect of subsection (b) of this
     Section 10.01;

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<PAGE>

          (ii) the Trustee shall not be liable for any error of judgment made in
     good faith by a Trust Officer, unless it is proved that the Trustee was
     negligent in ascertaining the pertinent facts; and

          (iii) the Trustee shall not be liable with respect to any action it
     takes or omits to take in good faith in accordance with a direction
     received by it pursuant to Section 9.05.

     (d) No provision of this Indenture shall require the Trustee to expend or
risk its own funds or otherwise incur any financial liability in the performance
of any of its duties hereunder or in the exercise of any of its rights or powers
unless the Trustee shall have received adequate indemnity in its opinion against
potential costs and liabilities incurred by it relating thereto.

     (e) Every provision of this Indenture that in any way relates to the
Trustee is subject to subsections (a), (b), (c) and (d) of this Section 10.01.

     (f) The Trustee shall not be liable for interest on any money received by
it except as the Trustee may agree in writing with the Company. Money held in
trust by the Trustee need not be segregated from other funds except to the
extent required by law.

     (g) At 5:00 p.m., New York City time, on each Trading Day, the Trustee
shall print and retain, for a period of 30 Business Days, the Volume Weighted
Average Price for such Trading Day, to the extent such Volume Weighted Average
Price is available on Bloomberg.

     Section 10.02. Rights of Trustee.

     Subject to Section 10.01:

     (a) The Trustee may rely conclusively on any document believed by it to be
genuine and to have been signed or presented by the proper person. The Trustee
need not investigate any fact or matter stated in the document.

     (b) Before the Trustee acts or refrains from acting, it may require an
Officers' Certificate or an Opinion of Counsel, which shall conform to Section
13.04(b). The Trustee shall not be liable for any action it takes or omits to
take in good faith in reliance on such Officers' Certificate or Opinion of
Counsel.

     (c) The Trustee may act through its agents and shall not be responsible for
the misconduct or negligence of any agent appointed with due care.

     (d) The Trustee shall not be liable for any action it takes or omits to
take in good faith which it believes to be authorized or within its rights or
powers.

     (e) The Trustee may consult with counsel of its selection, and the advice
or opinion of such counsel as to matters of law shall be full and complete
authorization and protection in respect of any such action taken, omitted or
suffered by it hereunder in good faith and in accordance with the advice or
opinion of such counsel.

                                      -63-

<PAGE>

     (f) The Trustee shall be under no obligation to exercise any of the rights
or powers vested in it by this Indenture at the request or direction of any of
the Holders pursuant to this Indenture, unless such Holders shall have offered
to the Trustee security or indemnity satisfactory to the Trustee against the
costs, expenses and liabilities which might be incurred by it in compliance with
such request or direction.

     (g) The Trustee shall not be bound to make any investigation into the facts
or matters stated in any resolution, certificate, statement, instrument,
opinion, report, notice, request, direction, consent, order, bond, debenture,
note, other evidence of indebtedness or other paper or document, but the
Trustee, in its discretion, may make such further inquiry or investigation into
such facts or matters as it may see fit, and, if the Trustee shall determine to
make such further inquiry or investigation, it shall be entitled to examine the
books, records and premises of the Company, personally or by agent or attorney
at the sole cost of the Company, and shall incur no liability or additional
liability of any kind by reason of such inquiry or investigation.

     (h) The Trustee shall not be deemed to have notice of any Default or Event
of Default unless a Trust Officer of the Trustee has actual knowledge thereof or
unless written notice of any event which is in fact such a default is received
by the Trustee at the Corporate Trust Office, and such notice references the
Securities and this Indenture.

     (i) The rights, privileges, protections, immunities and benefits given to
the Trustee, including, without limitation, its right to be indemnified, are
extended to, and shall be enforceable by, the Trustee in each of its capacities
hereunder, and to each agent, custodian and other Person employed to act
hereunder.

     Section 10.03. Individual Rights of Trustee.

     The Trustee in its individual or any other capacity may become the owner or
pledgee of Securities and may otherwise deal with the Company or an Affiliate of
the Company with the same rights it would have if it were not Trustee. Any Agent
may do the same with like rights. However, the Trustee is subject to Section
10.10 and 10.11.

     Section 10.04. Trustee's Disclaimer.

     The Trustee makes no representation as to the validity or adequacy of this
Indenture or the Securities, it shall not be accountable for the Company's use
of the proceeds from the Securities, and it shall not be responsible for any
statement in the Securities other than its certificate of authentication.

     Section 10.05. Notice of Default or Events of Default.

     If a default or an Event of Default occurs and is continuing and if it is
known to the Trustee, the Trustee shall mail to each Securityholder notice of
the default or Event of Default within 90 days after it occurs. However, the
Trustee may withhold the notice if and so long as a committee of its Trust
Officers in good faith determines that withholding notice is in the interests of
Securityholders, except in the case of a default or an Event of Default in
payment of the

                                      -64-

<PAGE>

principal of, or interest or premium, if any, on any Security, including the
failure to make Cash payments due upon conversion.

     Section 10.06. Reports by Trustee to Holders.

     If such report is required by TIA Section 313, within 60 days after each
May 15, beginning with the May 15 following the date of this Indenture, the
Trustee shall mail to each Securityholder a brief report dated as of such March
15 that complies with TIA Section 313(a). The Trustee also shall comply with TIA
Section 313(b)(2) and (c).

     A copy of each report at the time of its mailing to Securityholders shall
be mailed to the Company and filed with the SEC and each stock exchange, if any,
on which the Securities are listed. The Company shall notify the Trustee
whenever the Securities become listed on any stock exchange or listed or
admitted to trading on any quotation system and any changes in the stock
exchanges or quotation systems on which the Securities are listed or admitted to
trading and of any delisting thereof.

     Section 10.07. Compensation and Indemnity.

     The Company shall pay to the Trustee from time to time such compensation
(as agreed to from time to time by the Company and the Trustee in writing) for
its services (which compensation shall not be limited by any provision of law in
regard to the compensation of a trustee of an express trust). The Company shall
reimburse the Trustee upon request for all reasonable disbursements, expenses
and advances incurred or made by it. Such expenses may include the reasonable
compensation, disbursements and expenses of the Trustee's agents and counsel.

     The Company shall indemnify the Trustee or any predecessor Trustee (which
for purposes of this Section 10.07 shall include its officers, directors,
employees and agents) for, and hold it harmless against, any and all loss,
liability or expense, including taxes (other than taxes based upon, measured by
or determined by the income of the Trustee), including reasonable legal fees and
expenses, incurred by it in connection with the acceptance or administration of
its duties under this Indenture or any action or failure to act as authorized or
within the discretion or rights or powers conferred upon the Trustee hereunder,
including the reasonable costs and expenses of the Trustee and its counsel in
defending itself against any claim or liability in connection with the exercise
or performance of any of its powers or duties hereunder. The Trustee shall
notify the Company promptly of any claim asserted against the Trustee for which
it may seek indemnity. The Company need not pay for any settlement without its
written consent, which shall not be unreasonably withheld.

     The Company need not reimburse the Trustee for any expense or indemnify it
against any loss or liability incurred by it resulting from its gross negligence
or bad faith.

     To secure the Company's payment obligations in this Section 10.07, the
Trustee shall have a senior claim to which the Securities are hereby made
subordinate on all money or property held or collected by the Trustee, except
such money or property held in trust to pay the principal of, and interest, and
premium, if any, on, and the Make Whole Premium, if any, on, the

                                      -65-

<PAGE>

Securities. The obligations of the Company under this Section 10.07 shall
survive the satisfaction and discharge of this Indenture or the resignation or
removal of the Trustee.

     When the Trustee incurs expenses or renders services after an Event of
Default specified in clause (i) or (j) of Section 9.01 occurs, the expenses and
the compensation for the services are intended to constitute expenses of
administration under any Bankruptcy Law. The provisions of this Section shall
survive the termination of this Indenture.

     Section 10.08. Replacement of Trustee.

     The Trustee may resign by so notifying the Company. The Holders of a
majority in aggregate principal amount of the Securities then outstanding may
remove the Trustee by so notifying the Trustee and may, with the Company's
written consent, appoint a successor Trustee. The Company may remove the Trustee
if:

     (a) the Trustee fails to comply with Section 10.10;

     (b) the Trustee is adjudged a bankrupt or an insolvent;

     (c) a receiver or other public officer takes charge of the Trustee or its
property; or

     (d) the Trustee becomes incapable of acting.

     If the Trustee resigns or is removed or if a vacancy exists in the office
of Trustee for any reason, the Company shall promptly appoint a successor
Trustee. The resignation or removal of a Trustee shall not be effective until a
successor Trustee shall have delivered the written acceptance of its appointment
as described below.

     If a successor Trustee does not take office within 45 days after the
retiring Trustee resigns or is removed, the retiring Trustee, the Company or the
Holders of 10% in principal amount of the Securities then outstanding may
petition any court of competent jurisdiction for the appointment of a successor
Trustee at the expense of the Company.

     If the Trustee fails to comply with Section 10.10, any Holder may petition
any court of competent jurisdiction for the removal of the Trustee and the
appointment of a successor Trustee.

     A successor Trustee shall deliver a written acceptance of its appointment
to the retiring Trustee and to the Company. Immediately after that, the retiring
Trustee shall transfer all property held by it as Trustee to the successor
Trustee and be released from its obligations (exclusive of any liabilities that
the retiring Trustee may have incurred while acting as Trustee) hereunder, the
resignation or removal of the retiring Trustee shall become effective, and the
successor Trustee shall have all the rights, powers and duties of the Trustee
under this Indenture. A successor Trustee shall mail notice of its succession to
each Holder.

     A retiring Trustee shall not be liable for the acts or omissions of any
successor Trustee after its succession.

                                      -66-

<PAGE>

     Notwithstanding replacement of the Trustee pursuant to this Section 10.08,
the Company's obligations under Section 10.07 shall continue for the benefit of
the retiring Trustee.

     Section 10.09. Successor Trustee by Merger, etc.

     If the Trustee consolidates with, merges or converts into, or transfers all
or substantially all of its corporate trust assets (including the administration
of this Indenture) to, another corporation, the resulting, surviving or
transferee corporation, without any further act, shall be the successor Trustee,
provided such transferee corporation shall qualify and be eligible under Section
10.10. Such successor Trustee shall promptly mail notice of its succession to
the Company and each Holder.

     Section 10.10. Eligibility; Disqualification.

     The Trustee shall always satisfy the requirements of paragraphs (1), (2)
and (5) of TIA Section 310(a). The Trustee (or its parent holding company) shall
have a combined capital and surplus of at least $50,000,000. If at any time the
Trustee shall cease to satisfy any such requirements, it shall resign
immediately in the manner and with the effect specified in this Article 10. The
Trustee shall be subject to the provisions of TIA Section 310(b). Nothing herein
shall prevent the Trustee from filing with the SEC the application referred to
in the penultimate paragraph of TIA Section 310(b).

     Section 10.11. Preferential Collection of Claims Against Company.

     The Trustee shall comply with TIA Section 311(a), excluding any creditor
relationship listed in TIA Section 311(b). A Trustee who has resigned or been
removed shall be subject to TIA Section 311(a) to the extent indicated therein.

                      ARTICLE 11 SATISFACTION AND DISCHARGE

     Section 11.01. Satisfaction and Discharge.

     (a) This Indenture shall cease to be of further effect, and the Trustee, on
demand of and at the expense of the Company, shall execute proper instruments
acknowledging satisfaction and discharge of this Indenture, when

          (i) all Securities theretofore authenticated and delivered (other than
     (i) Securities which have been destroyed, lost or stolen and which have
     been replaced or paid as provided in Section 2.07 and (ii) Securities for
     whose payment money has theretofore been deposited in trust and thereafter
     repaid to the Company as provided in Section 11.03) have been delivered to
     the Trustee for cancellation;

          (ii) the Company has paid or caused to be paid all other sums payable
     hereunder by the Company; and

          (iii) the Company has delivered to the Trustee an Officers'
     Certificate and an Opinion of Counsel, each stating that all conditions
     precedent herein provided for relating to the satisfaction and discharge of
     this Indenture have been complied with.

                                      -67-
<PAGE>

     Notwithstanding the satisfaction and discharge of this Indenture, the
obligations of the Company to the Trustee under Section 10.07 shall survive.

     (b) The Company may discharge its obligations to pay principal of, and
interest, and premium, if any, on the Securities when all Securities not
theretofore delivered to the Trustee for cancellation

          (i) have become due and payable, or

          (ii) will become due and payable at the Final Maturity Date within one
     year,

and the Company, in the case of clause (i) or (ii) above, has irrevocably,
subject to the limitations set forth in the following sentence, deposited or
caused to be irrevocably, subject to the limitations set forth in the following
sentence, deposited with the Trustee or a Paying Agent (other than the Company
or any of its Affiliates) as trust funds in trust for the purpose cash in an
amount sufficient to pay and discharge the entire indebtedness on such
Securities not theretofore delivered to the Trustee for cancellation, for
principal, premium, if any, interest, to the date of such deposit (in the case
of Securities which have become due and payable) or to the Final Maturity Date;
provided, however, that the foregoing shall not discharge the Company's
obligation to effect conversion, registration of transfer or exchange of
Securities in accordance with the terms of this Indenture.

     Section 11.02. Application of Trust Money.

     Subject to the provisions of Section 11.03, the Trustee or a Paying Agent
shall hold in trust, for the benefit of the Holders of Securities, all money
deposited with it pursuant to Section 11.01(b) with respect to Securities and
shall apply the deposited money in accordance with this Indenture and the
Securities to the payment of the principal of, and any interest and premium on,
the Securities. Money so held in trust shall not be subject to the subordination
provisions of Article 6.

     Section 11.03. Repayment to Company.

     The Trustee and each Paying Agent shall promptly pay to the Company upon
request any excess money (i) deposited with them pursuant to Section 11.01(b)
and (ii) held by them at any time.

     The Trustee and each Paying Agent shall pay to the Company upon request any
money held by them for the payment of principal, premium, if any, or interest
that remains unclaimed for two years after a right to such money has matured;
provided, however, that the Trustee or such Paying Agent, before being required
to make any such payment, may at the expense of the Company cause to be mailed
to each Holder entitled to such money notice that such money remains unclaimed
and that after a date specified therein, which shall be at least 30 days from
the date of such mailing, any unclaimed balance of such money then remaining
will be repaid to the Company. After payment to the Company, Holders entitled to
money must look to the Company for payment as general creditors unless an
applicable abandoned property law designates another person.

                                      -68-

<PAGE>

     Section 11.04. Reinstatement.

     If the Trustee or any Paying Agent is unable to apply any money in
accordance with Section 11.02 by reason of any legal proceeding or by reason of
any order or judgment of any court or governmental authority enjoining,
restraining or otherwise prohibiting such application, then the Company's
obligations under this Indenture and the Securities shall be revived and
reinstated as though no deposit had occurred pursuant to Section 11.01(b) until
such time as the Trustee or such Paying Agent is permitted to apply all such
money in accordance with Section 11.02; provided, however, that, if the Company
has made any payment of the principal of, or interest or premium, if any, on,
any Securities because of the reinstatement of its obligations, the Company
shall be subrogated to the rights of the Holders of such Securities to receive
any such payment from the money held by the Trustee or such Paying Agent.

                 ARTICLE 12 AMENDMENTS, SUPPLEMENTS AND WAIVERS

     Section 12.01. Without Consent of Holders.

     The Company and the Trustee may amend or supplement the Indenture or the
Securities without notice to or consent of any Securityholder:

     (a) to comply with Section 5.11 and 8.01;

     (b) to cure any ambiguity, defect or inconsistency;

     (c) to make any other change that does not adversely affect the rights of
any Securityholder;

     (d) to comply with the provisions of the TIA;

     (e) to add to the covenants of the Company for the equal and ratable
benefit of the Securityholders or to surrender any right, power or option
conferred upon the Company;

     (f) to appoint a successor Trustee; or

     (g) to provide for the issuance of Additional Securities as permitted by
Section 2.16, which will have terms substantially identical to the other
outstanding Securities except as specified in Section 2.16, and which will be
treated, together with any other outstanding Securities, as a single issue of
securities.

     Section 12.02. With Consent of Holders.

     The Company and the Trustee may amend or supplement the Securities or this
Indenture with the written consent of the Holders of at least a majority in
aggregate principal amount of the Securities then outstanding. The Holders of at
least a majority in aggregate principal amount of the Securities then
outstanding may waive compliance in a particular instance by the Company with
any provision of the Securities or this Indenture without notice to any
Securityholder. However, notwithstanding the foregoing but subject to Section
12.04, without

                                      -69-

<PAGE>

the written consent of each Securityholder affected, an amendment, supplement or
waiver, including a waiver pursuant to Section 9.04, may not:

     (a) change the stated maturity of the principal of, or the date any
installment of interest (including any Liquidated Damages) is due on, any
Security;

     (b) reduce the principal amount of, or any premium or interest (including
any Liquidated Damages) on, any Security;

     (c) reduce the amount of principal payable upon acceleration of the
maturity of any Security;

     (d) change the place or currency of payment of principal of, or any
premium, if any, or interest (including any Liquidated Damages) on, any
Security;

     (e) impair the right to institute suit for the enforcement of any payment
on, or with respect to, any Security;

     (f) modify the provisions with respect to the purchase right of Holders
pursuant to Article 3 upon a Fundamental Change;

     (g) modify the subordination provisions of Article 6 in a manner materially
adverse to the Holders of Securities;

     (h) modify the provisions of this Indenture with respect to conversion of
the Securities in a manner adverse to the Holders of Securities;

     (i) reduce the percentage of the aggregate principal amount of the
outstanding Securities whose Holders must consent to a modification or
amendment;

     (j) reduce the percentage of the aggregate principal amount of the
outstanding Securities necessary for the waiver of compliance with certain
provisions of this Indenture or the waiver of certain defaults under this
Indenture; and

     (k) modify any of the provisions of this Section or Section 9.04, except to
increase any such percentage or to provide that certain provisions of this
Indenture cannot be modified or waived without the consent of the Holder of each
outstanding Security affected thereby.

     It shall not be necessary for the consent of the Holders under this Section
12.02 to approve the particular form of any proposed amendment, supplement or
waiver, but it shall be sufficient if such consent approves the substance
thereof.

     After an amendment, supplement or waiver under this Section 12.02 becomes
effective, the Company shall mail to the Holders affected thereby a notice
briefly describing the amendment, supplement or waiver. Any failure of the
Company to mail such notice, or any defect therein, shall not, however, in any
way impair or affect the validity of any such amendment, supplement or waiver.
An amendment or supplement under this Section 12.02 or under Section 12.01 may
not make any change that adversely affects the rights under Article 6 of

                                      -70-

<PAGE>

any holder of an issue of Senior Indebtedness unless the holders of that issue,
pursuant to its terms, consent to the change.

     Section 12.03. Compliance with Trust Indenture Act.

     Every amendment to or supplement of this Indenture or the Securities shall
comply with the TIA as in effect at the date of such amendment or supplement.

     Section 12.04. Revocation and Effect of Consents.

     Until an amendment, supplement or waiver becomes effective, a consent to it
by a Holder is a continuing consent by the Holder and every subsequent Holder of
a Security or portion of a Security that evidences the same debt as the
consenting Holder's Security, even if notation of the consent is not made on any
Security. However, any such Holder or subsequent Holder may revoke the consent
as to its Security or portion of a Security if the Trustee receives the notice
of revocation before the date the amendment, supplement or waiver becomes
effective.

     After an amendment, supplement or waiver becomes effective, it shall bind
every applicable Securityholder, unless it makes a change described in any of
clauses (a) through (l) of Section 12.02. In that case the amendment, supplement
or waiver shall bind each Holder of a Security who has consented to it and every
subsequent Holder of a Security or portion of a Security that evidences the same
debt as the consenting Holder's Security.

     Section 12.05. Notation on or Exchange of Securities.

     If an amendment, supplement or waiver changes the terms of a Security, the
Trustee may require the Holder of the Security to deliver it to the Trustee. The
Trustee may place an appropriate notation on the Security about the changed
terms and return it to the Holder. Alternatively, if the Company or the Trustee
so determines, the Company in exchange for the Security shall issue and the
Trustee shall authenticate a new Security that reflects the changed terms.

     Section 12.06. Trustee to Sign Amendments, etc.

     The Trustee shall sign any amendment or supplemental indenture authorized
pursuant to this Article 12 if the amendment or supplemental indenture does not
adversely affect the rights, duties, liabilities or immunities of the Trustee.
If it does, the Trustee may, in its sole discretion, but need not sign it. In
signing or refusing to sign such amendment or supplemental indenture, the
Trustee shall be entitled to receive, and, subject to Section 10.01, shall be
fully protected in relying upon, an Opinion of Counsel stating that such
amendment or supplemental indenture is authorized or permitted by this
Indenture. The Company may not sign an amendment or supplement indenture until
the Board of Directors approves it.

     Section 12.07. Effect of Supplemental Indentures.

     Upon the execution of any supplemental indenture under this Article, this
Indenture shall be modified in accordance therewith, and such supplemental
indenture shall form a part of this

                                      -71-

<PAGE>

Indenture for all purposes; and every Holder of Securities theretofore or
thereafter authenticated and delivered hereunder shall be bound thereby.

                            ARTICLE 13 MISCELLANEOUS

     Section 13.01. Trust Indenture Act Controls.

     If any provision of this Indenture limits, qualifies or conflicts with the
duties imposed by any of Sections 310 to 317, inclusive, of the TIA through
operation of Section 318(c) thereof, such imposed duties shall control.

     Section 13.02. Notices.

     Any demand, authorization, notice, request, consent or communication shall
be given in writing and delivered in person or mailed by first-class mail,
postage prepaid, addressed as follows or transmitted by facsimile transmission
(confirmed by delivery in person or mail by first-class mail, postage prepaid,
or by guaranteed overnight courier) to the following facsimile numbers:

          If to the Company, to:

          PolyMedica Corporation
          701 Edgewater Drive, Suite 360
          Wakefield, Massachusetts 01880
          Attention: Chief Financial Officer
          Facsimile No.: (781) 295-0181

          if to the Trustee, to:

          LaSalle Bank National Association
          135 South LaSalle Street, Suite 1560
          Chicago, Illinois 60603
          Attention: Corporate Trust Services Division
          Facsimile No.: (312) 904-2236

     Such notices or communications shall be effective when received.

     The Company or the Trustee by notice to the other may designate additional
or different addresses for subsequent notices or communications.

     Any notice or communication mailed to a Securityholder shall be mailed by
first-class mail or delivered by an overnight delivery service to it at its
address shown on the register kept by the Primary Registrar.

     Failure to mail a notice or communication to a Securityholder or any defect
in it shall not affect its sufficiency with respect to other Securityholders. If
a notice or communication to a Securityholder is mailed in the manner provided
above, it is duly given, whether or not the addressee receives it.

                                      -72-

<PAGE>

     Section 13.03. Communications by Holders with Other Holders.

     Securityholders may communicate pursuant to TIA Section 312(b) with other
Securityholders with respect to their rights under this Indenture or the
Securities. The Company, the Trustee, the Registrar and any other person shall
have the protection of TIA Section 312(c).

     Section 13.04. Certificate and Opinion as to Conditions Precedent.

     (a) Upon any request or application by the Company to the Trustee to take
any action under this Indenture, the Company shall furnish to the Trustee at the
request of the Trustee:

          (i) an Officers' Certificate stating that, in the opinion of the
     signers, all conditions precedent (including any covenants, compliance with
     which constitutes a condition precedent), if any, provided for in this
     Indenture relating to the proposed action have been complied with; and

          (ii) an Opinion of Counsel stating that, in the opinion of such
     counsel, all such conditions precedent (including any covenants, compliance
     with which constitutes a condition precedent) have been complied with.

     (b) Each Officers' Certificate and Opinion of Counsel with respect to
compliance with a condition or covenant provided for in this Indenture shall
include:

          (i) a statement that the person making such certificate or opinion has
     read such covenant or condition;

          (ii) a brief statement as to the nature and scope of the examination
     or investigation upon which the statements or opinions contained in such
     certificate or opinion are based;

          (iii) a statement that, in the opinion of such person, he or she has
     made such examination or investigation as is necessary to enable him or her
     to express an informed opinion as to whether or not such covenant or
     condition has been complied with; and

          (iv) a statement as to whether or not, in the opinion of such person,
     such condition or covenant has been complied with;

provided, however, that with respect to matters of fact an Opinion of Counsel
may rely on an Officers' Certificate or certificates of public officials.

     Section 13.05. Record Date for Vote or Consent of Securityholders.

     The Company (or, in the event deposits have been made pursuant to Section
11.01, the Trustee) may set a record date for purposes of determining the
identity of Holders entitled to vote or consent to any action by vote or consent
authorized or permitted under this Indenture, which record date shall not be
more than 30 days prior to the date of the commencement of solicitation of such
action. Notwithstanding the provisions of Section 12.04, if a record date is
fixed, those

                                      -73-

<PAGE>

persons who were Holders of Securities at the close of business on such record
date (or their duly designated proxies), and only those persons, shall be
entitled to take such action by vote or consent or to revoke any vote or consent
previously given, whether or not such persons continue to be Holders after such
record date.

     Section 13.06. Rules by Trustee, Paying Agent, Registrar and Conversion
Agent.

     The Trustee may make reasonable rules (not inconsistent with the terms of
this Indenture) for action by or at a meeting of Holders. Any Registrar, Paying
Agent or Conversion Agent may make reasonable rules for its functions.

     Section 13.07. Legal Holidays.

     A "LEGAL HOLIDAY" is a Saturday, Sunday or a day on which state or
federally chartered banking institutions in New York, New York or the state in
which the Corporate Trust Office is located are not required to be open. If a
payment date is a Legal Holiday, payment shall be made on the next succeeding
day that is not a Legal Holiday, and no interest shall accrue for the
intervening period. If a regular record date is a Legal Holiday, the record date
shall not be affected.

     Section 13.08. Governing Law.

     This Indenture and the Securities shall be governed by, and construed in
accordance with, the laws of the State of New York without giving effect to
applicable principles of conflicts of law to the extent that the application of
the laws of another jurisdiction would be required thereby.

     Section 13.09. No Adverse Interpretation of Other Agreements.

     This Indenture may not be used to interpret another indenture, loan or debt
agreement of the Company or a Subsidiary of the Company. Any such indenture,
loan or debt agreement may not be used to interpret this Indenture.

     Section 13.10. No Recourse against Others.

     All liability described in paragraph 15 of the Securities of any director,
officer, employee or shareholder, as such, of the Company is waived and
released.

     Section 13.11. Successors.

     All agreements of the Company in this Indenture and the Securities shall
bind its successor. All agreements of the Trustee in this Indenture shall bind
its successor.

     Section 13.12. Multiple Counterparts.

     The parties may sign multiple counterparts of this Indenture. Each signed
counterpart shall be deemed an original, but all of them together represent the
same agreement.

                                      -74-

<PAGE>

     Section 13.13. Separability.

     In case any provisions in this Indenture or in the Securities shall be
invalid, illegal or unenforceable, the validity, legality and enforceability of
the remaining provisions shall not in any way be affected or impaired thereby.

     Section 13.14. Table of Contents, Headings, etc.

     The table of contents, cross-reference sheet and headings of the Articles
and Sections of this Indenture have been inserted for convenience of reference
only, are not to be considered a part hereof and shall in no way modify or
restrict any of the terms or provisions hereof.

     Section 13.15. Qualification of Indenture.

     The Company shall qualify this Indenture under the TIA in accordance with
the terms and conditions of the Registration Rights Agreement entered into on
the date hereof and shall pay all reasonable costs and expenses (including
attorneys' fees and expenses for the Company and the Trustee) incurred in
connection therewith, including, but not limited to, costs and expenses of
qualification of the Indenture and the Securities and printing this Indenture
and the Securities. The Trustee shall be entitled to receive from the Company
any such Officers' Certificates, Opinions of Counsel or other documentation as
it may reasonably request in connection with any such qualification of this
Indenture under the TIA.

                            [SIGNATURE PAGE FOLLOWS]

                                      -75-

<PAGE>

     IN WITNESS WHEREOF, the parties hereto have hereunto set their hands as of
the date and year first above written.

                                        POLYMEDICA CORPORATION

                                        By:
                                            ------------------------------------
                                        Name:
                                              ----------------------------------
                                        Title:
                                               ---------------------------------

                                        LASALLE BANK NATIONAL ASSOCIATION,
                                           as Trustee

                                        By:
                                            ------------------------------------
                                        Name:
                                              ----------------------------------
                                        Title:
                                               ---------------------------------

                                      -76-

<PAGE>

                                                                   SCHEDULE 4.02

     The following table sets forth the increase in the Conversion Rate,
expressed as a number of Additional Shares to be received per $1,000 principal
amount of Securities:

<TABLE>
<CAPTION>
                                                                    STOCK PRICE
                     ---------------------------------------------------------------------------------------------------------
   EFFECTIVE DATE    $42.02 $44.00 $46.00 $47.90 $50.00 $55.00 $60.00 $65.00 $70.00 $75.00 $80.00 $90.00 $100.0 $110.0 $120.00
-------------------- ------ ------ ------------- ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ -------
<S>                  <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>
September 19, 2006..   2.92   2.63   2.32   2.07   1.82   1.35   1.01   0.76   0.57   0.43   0.32   0.18   0.09   0.04    0.00
September 15, 2007..   2.92   2.81   2.47   2.18   1.90   1.39   1.02   0.75   0.55   0.40   0.29   0.15   0.07   0.03    0.00
September 15, 2008..   2.92   2.92   2.54   2.22   1.92   1.35   0.96   0.68   0.48   0.34   0.23   0.10   0.04   0.01    0.00
September 15, 2009..   2.92   2.92   2.52   2.16   1.83   1.23   0.82   0.55   0.36   0.23   0.14   0.05   0.01   0.00    0.00
September 15, 2010..   2.92   2.77   2.27   1.87   1.51   0.89   0.51   0.28   0.15   0.07   0.03   0.00   0.00   0.00    0.00
September 15, 2011..   2.91   1.84   0.87   0.20   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00    0.00
</TABLE>

                                     -S-1-<PAGE>
                                                                     Exhibit 4.2

                           [FORM OF FACE OF SECURITY]

[UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE
DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION ("DTC"), TO POLYMEDICA
CORPORATION (THE "COMPANY") OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE
OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO.
OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC
(AND ANY PAYMENT IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED
BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE
HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE
REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.] (1)

[THIS SECURITY AND THE SHARES OF POLYMEDICA CORPORATION (THE "COMPANY") COMMON
STOCK ("COMMON STOCK") ISSUABLE UPON CONVERSION OF THIS SECURITY HAVE NOT BEEN
REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"),
OR ANY STATE SECURITIES LAWS. NEITHER THIS SECURITY, THE SHARES OF COMMON STOCK
ISSUABLE UPON CONVERSION OF THIS SECURITY NOR ANY INTEREST OR PARTICIPATION
HEREIN OR THEREIN MAY BE REOFFERED, SOLD, ASSIGNED, TRANSFERRED, PLEDGED,
ENCUMBERED OR OTHERWISE DISPOSED OF IN THE ABSENCE OF SUCH REGISTRATION OR
UNLESS SUCH TRANSACTION IS EXEMPT FROM, OR NOT SUBJECT TO, REGISTRATION.] (2)

[THE HOLDER OF THIS SECURITY, BY ITS ACCEPTANCE HEREOF, AGREES TO OFFER, SELL OR
OTHERWISE TRANSFER SUCH SECURITY, PRIOR TO THE DATE (THE "RESALE RESTRICTION
TERMINATION DATE") THAT IS TWO YEARS AFTER THE LATER OF THE ORIGINAL ISSUE DATE
HEREOF AND THE LAST DATE ON WHICH THE COMPANY OR ANY AFFILIATE OF THE COMPANY
WAS THE OWNER OF THIS SECURITY (OR ANY PREDECESSOR OF SUCH SECURITY) ONLY (A) TO
THE COMPANY OR ANY SUBSIDIARY THEREOF, (B) FOR SO LONG AS THE SECURITIES ARE
ELIGIBLE FOR RESALE PURSUANT TO RULE 144A, TO A PERSON IT REASONABLY BELIEVES IS
A "QUALIFIED INSTITUTIONAL BUYER" AS DEFINED IN RULE 144A UNDER THE SECURITIES
ACT THAT PURCHASES FOR ITS OWN ACCOUNT OR FOR THE ACCOUNT OF A QUALIFIED
INSTITUTIONAL BUYER TO WHICH NOTICE IS GIVEN THAT THE TRANSFER IS BEING MADE IN
RELIANCE ON RULE 144A, (C) PURSUANT TO A REGISTRATION STATEMENT THAT HAS BEEN
DECLARED EFFECTIVE UNDER THE SECURITIES ACT, OR (D) PURSUANT TO ANOTHER
AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS

----------
(1)  These paragraphs should be included only if the Security is a Global
     Security.

(2)  These paragraphs should be included only if the Security is a Transfer
     Restricted Security.

<PAGE>

OF THE SECURITIES ACT, SUBJECT TO THE RIGHTS OF THE COMPANY AND THE WITHIN
MENTIONED TRUSTEE PRIOR TO ANY SUCH OFFER, SALE OR TRANSFER PURSUANT TO CLAUSE
(D) TO REQUIRE THE DELIVERY OF AN OPINION OF COUNSEL, CERTIFICATION AND/OR OTHER
INFORMATION SATISFACTORY TO EACH OF THEM, AND IN EACH OF THE FOREGOING CASES
WHERE REGISTRATION OR TRANSFER OF THIS SECURITY IS REQUIRED, A CERTIFICATE OF
TRANSFER IN THE FORM APPEARING ON THE OTHER SIDE OF THIS SECURITY COMPLETED AND
DELIVERED BY THE TRANSFEROR TO THE TRUSTEE. THIS LEGEND WILL BE REMOVED ON OR
AFTER THE RESALE RESTRICTION TERMINATION DATE UPON THE REQUEST OF THE HOLDER.]
(2)

[THE HOLDER OF THIS SECURITY IS ENTITLED TO THE BENEFITS OF A REGISTRATION
RIGHTS AGREEMENT (AS SUCH TERM IS DEFINED IN THE INDENTURE REFERRED TO ON THE
REVERSE HEREOF) AND, BY ITS ACCEPTANCE HEREOF, AGREES TO BE BOUND BY AND TO
COMPLY WITH THE PROVISIONS OF SUCH REGISTRATION RIGHTS AGREEMENT.] (2)

----------
(2)  These paragraphs should be included only if the Security is a Transfer
     Restricted Security.

(2)  These paragraphs should be included only if the Security is a Transfer
     Restricted Security.

                                       A-2

<PAGE>

                             POLYMEDICA CORPORATION

CUSIP: 731738AA8                                                  No. __________

           1.00% CONVERTIBLE SUBORDINATED NOTES DUE SEPTEMBER 15, 2011

     PolyMedica Corporation, a Massachusetts corporation (the "Company", which
term shall include any successor corporation under the Indenture referred to on
the reverse hereof), promises to pay to Cede & Co., or registered assigns, the
principal sum of dollars ($__________) on September 15, 2011 [or such greater or
lesser amount as is indicated on the Schedule of Exchanges of Securities on the
other side of this Security].(3)

     This Security is convertible as specified on the other side of this
Security. Additional provisions of this Security are set forth on the other side
of this Security.

                            [SIGNATURE PAGE FOLLOWS]

----------
(3)  This phrase should be included only if the Security is a Global Security.

                                       A-3

<PAGE>

     IN WITNESS WHEREOF, the Company has caused this instrument to be duly
executed.

                                        POLYMEDICA CORPORATION

                                        By:
                                            ------------------------------------
                                        Name:
                                              ----------------------------------
                                        Title:
                                               ---------------------------------

Trustee's Certificate of Authentication: This is one of the Securities referred
to in the within-mentioned Indenture.

LASALLE BANK NATIONAL ASSOCIATION,
   as Trustee

By:
    ---------------------------------
    Authorized Signatory

                                       A-4

<PAGE>

                       [FORM OF REVERSE SIDE OF SECURITY]

                             POLYMEDICA CORPORATION

           1.00% CONVERTIBLE SUBORDINATED NOTES DUE SEPTEMBER 15, 2011

1.   INTEREST AMOUNTS

     PolyMedica Corporation, a Massachusetts corporation (the "Company", which
term shall include any successor corporation under the Indenture hereinafter
referred to), will pay interest at a rate of 1.00% per annum, on the principal
amount of this Security payable as provided in the Indenture.

2.   METHOD OF PAYMENT

     The Company shall pay any interest on this Security to the person who is
the Holder of this Security at the close of business on March 1 or September 1,
as the case may be, next preceding the related interest payment date. The Holder
must surrender this Security to a Paying Agent to collect payment of principal
and premium, if any. Interest on the Security will be paid at a rate of 1.00%
per annum, payable semi-annually in arrears on March 15 and September 15 of each
year, or if any such day is not a Business Day, the immediately following
Business Day, commencing March 15, 2007. Interest is computed on the basis of a
360-day year comprised of twelve 30-day months. In the event of the maturity,
conversion or purchase of the Security by the Company at the option of the
Holder, interest shall cease to accrue on the Security. However, the Company
will pay interest on the maturity date to a Holder of record of the Security on
the record date immediately preceding the stated maturity date regardless of
whether such Holder converts the Security.

     The Company will pay principal of (and premium, if any) and interest on
this Security in such coin or currency of the United States of America that at
the time of payment is legal tender for payment of public and private debts. The
Company may, however, pay principal, premium, if any, and interest in respect of
any Certificated Security by check or wire transfer payable in such money;
provided, however, that a Holder with an aggregate principal amount in excess of
$2,000,000 will be paid by wire transfer in immediately available funds at the
election of such Holder if such Holder has provided wire transfer instructions
to the Company at least 10 Business Days prior to the payment date. The Company
may mail a check for interest to the Holder's registered address.
Notwithstanding the foregoing, so long as this Security is registered in the
name of a Depositary or its nominee, all payments hereon shall be made by wire
transfer of immediately available funds to the account of the Depositary or its
nominee.

3.   PAYING AGENT, REGISTRAR AND CONVERSION AGENT

     Initially, LaSalle Bank National Association (the "Trustee", which term
shall include any successor trustee under the Indenture hereinafter referred to)
will act as Paying Agent, Registrar and Conversion Agent. The Company may change
any Paying Agent, Registrar or Conversion

                                       A-5

<PAGE>

Agent without notice to the Holder. The Company or any of its Subsidiaries may,
subject to certain limitations set forth in the Indenture, act as Paying Agent
or Registrar.

4.   INDENTURE, LIMITATIONS

     This Security is one of a duly authorized issue of Securities of the
Company designated as its 1.00% Convertible Subordinated Notes due September 15,
2011 (the "Securities"), issued under an Indenture, dated as of September 19,
2006 (together with any supplemental indentures thereto, the "Indenture"),
between the Company and the Trustee. The terms of this Security include those
stated in the Indenture and those required by or made part of the Indenture by
reference to the Trust Indenture Act of 1939, as amended, as in effect on the
date of the Indenture. This Security is subject to all such terms, and the
Holder of this Security is referred to the Indenture and said Act for a
statement of them.

     The Securities are subordinated unsecured obligations of the Company. The
Indenture does not limit other debt of the Company, secured or unsecured,
including Senior Indebtedness.

5.   PURCHASE OF SECURITIES AT OPTION OF HOLDER UPON A FUNDAMENTAL CHANGE

     At the option of the Holder and subject to the terms and conditions of the
Indenture, the Company shall become obligated to purchase all or any part
specified by the Holder (so long as the principal amount of such part is $1,000
or an integral multiple of $1,000 in excess thereof) of the Securities held by
such Holder on the date that is 30 Business Days after the occurrence of a
Fundamental Change, at a purchase price equal to 100% of the principal amount
thereof, together with any accrued and unpaid interest up to, but excluding, the
Fundamental Change Purchase Date, payable in cash. The Holder shall have the
right to withdraw any Fundamental Change Purchase Notice (in whole or in a
portion thereof that is $1,000 or an integral multiple of $1,000 in excess
thereof) at any time prior to 5:00 p.m., New York City time, on the second
Trading Day next preceding the Fundamental Change Purchase Date by delivering a
written notice of withdrawal to the Paying Agent in accordance with the terms of
the Indenture.

6.   CONVERSION

     A Holder of a Security may convert the principal amount of such Security
(or any portion thereof equal to $1,000 or any integral multiple of $1,000 in
excess thereof) into Cash and Common Stock at any time prior to the close of
business on April 15, 2011, subject to the conditions, if any, set forth in
Section 5.01 of the Indenture; provided, however, that, if the Security is
subject to purchase upon a Fundamental Change, the conversion right will
terminate at the close of business on the second Trading Day immediately
preceding the Fundamental Change Purchase Date for such Security or such earlier
date as the Holder presents such Security for purchase (unless the Company shall
default in making the Fundamental Change Purchase Price when due, in which case
the conversion right shall terminate at the close of business on the date such
default is cured and such Security is purchased).

                                       A-6

<PAGE>

     The initial Conversion Price is $47.9028 per share, and the initial
Conversion Rate is 20.8756 shares of Common Stock, in each case subject to
adjustment under certain circumstances as provided in the Indenture. No
fractional shares will be issued upon conversion; in lieu thereof, the Company
shall deliver a number of shares of Common Stock equal to the aggregate of the
fractional shares otherwise deliverable for each Trading Day during the
Conversion Period (rounding down to the nearest whole number) and shall pay an
amount in cash equal to the remainder multiplied by the Volume Weighted Average
Price of the Common Stock on the last day of the Conversion Period.

     To convert a Security, a Holder must (a) complete and duly sign the
conversion notice set forth below and deliver such notice to a Conversion Agent,
(b) surrender the Security to a Conversion Agent, (c) furnish appropriate
endorsements and transfer documents if required by a Conversion Agent and (d)
pay any transfer or similar tax, if required. A Holder may convert a portion of
a Security equal to $1,000 or any integral multiple thereof.

     A Security in respect of which a Holder had delivered a Fundamental Change
Purchase Notice exercising the option of such Holder to require the Company to
purchase such Security may be converted only if the Fundamental Change Purchase
Notice is withdrawn in accordance with the terms of the Indenture.

7.   SUBORDINATION

     The indebtedness evidenced by the Securities is, to the extent and in the
manner provided in the Indenture, subordinate and subject in right of payment to
the prior payment in full of all Senior Indebtedness of the Company. Any Holder
by accepting this Security agrees to and shall be bound by such subordination
provisions and authorizes the Trustee to give them effect. In addition to all
other rights of Senior Indebtedness described in the Indenture, the Senior
Indebtedness shall continue to be Senior Indebtedness and entitled to the
benefits of the subordination provisions irrespective of any amendment,
modification or waiver of any terms of any instrument relating to the Senior
Indebtedness or any extension or renewal of the Senior Indebtedness.

8.   DENOMINATIONS, TRANSFER, EXCHANGE

     The Securities are in registered form, without coupons, in denominations of
$1,000 and integral multiples of $1,000. A Holder may transfer or exchange
Securities in accordance with the Indenture. The Registrar may require a Holder,
among other things, to furnish appropriate endorsements and transfer documents
and to pay any taxes or other governmental charges that may be imposed in
relation thereto by law or permitted by the Indenture.

9.   PERSONS DEEMED OWNERS

     The Holder of a Security may be treated as the owner of it for all
purposes.

                                       A-7

<PAGE>

10.  UNCLAIMED MONEY

     If money for the payment of principal, premium, if any, or Interest, if
any, remains unclaimed for two years, the Trustee or Paying Agent will pay the
money back to the Company at its written request, subject to applicable
unclaimed property law. After that, Holders entitled to money must look to the
Company for payment as general creditors unless an applicable abandoned property
law designates another person.

11.  AMENDMENT, SUPPLEMENT AND WAIVER

     Subject to certain exceptions set forth in the Indenture, the Securities
and the Indenture may be amended or supplemented with the consent of the Holders
of at least a majority in aggregate principal amount of the Securities then
outstanding, and an existing default or Event of Default with respect to the
Securities and its consequence or compliance with any provision of the
Securities or the Indenture may be waived in a particular instance with the
consent of the Holders of a majority in aggregate principal amount of the
Securities then outstanding. Without the consent of or notice to any Holder, the
Company and the Trustee may amend or supplement the Indenture or the Securities
to, among other things, cure any ambiguity, defect or inconsistency or make any
other change that does not adversely affect the rights of any Holder.

12.  SUCCESSOR ENTITY

     When a successor corporation assumes all the obligations of its predecessor
under the Securities and the Indenture in accordance with the terms and
conditions of the Indenture, the predecessor corporation (except in certain
circumstances specified in the Indenture) shall be released from those
obligations.

13.  DEFAULTS AND REMEDIES

     Under the Indenture, an Event of Default with respect to the Securities
includes: (i) default for 30 days in payment of any interest on any Securities;
(ii) default in payment of any principal of (including, without limitation, any
premium, if any, on) the Securities when due; (iii) defaults in the payment of
Cash and shares of Common Stock (if any) upon conversion of any Security, when
the same becomes due and payable, and the failure continues for five Business
Days; (iv) failure by the Company for 60 days after notice to it to comply with
any of its other agreements contained in the Securities or in the Indenture with
respect to the Securities; (v) default in payment of the purchase price of any
Security when due and payable; (vi) failure to provide a Fundamental Change
Purchase Notice when required and the failure continues for five Business Days;
(vii) any indebtedness for money borrowed of the Company or a Significant
Subsidiary in an outstanding principal amount in excess of $10 million is not
paid at final maturity or upon acceleration and such indebtedness is not
discharged, or such default in payment or acceleration is not cured or
rescinded, within 30 days after written notice as provided in the Indenture;
(viii) the Company or a Significant Subsidiary fails to pay one or more final
and non-appealable judgments entered by a court of competent jurisdiction, the
aggregate uninsured or unbonded portion of which is in excess of $10 million, if
the judgments are not paid, discharged or stayed within 60 days; and (xi)
certain events of bankruptcy, insolvency or

                                       A-8

<PAGE>

reorganization of the Company or any Significant Subsidiary. If an Event of
Default with respect to the Securities (other than as a result of certain events
of bankruptcy, insolvency or reorganization specified in the Indenture) occurs
and is continuing, the Trustee or the Holders of at least 25% in aggregate
principal amount of the Securities then outstanding may declare all unpaid
principal to the date of acceleration on the Securities then outstanding to be
due and payable immediately, all as and to the extent provided in the Indenture.
If an Event of Default occurs as a result of certain events of bankruptcy,
insolvency or reorganization specified in the Indenture, all unpaid principal of
the Securities then outstanding shall become due and payable immediately without
any declaration or other act on the part of the Trustee or any Holder, all as
and to the extent provided in the Indenture. Holders may not enforce the
Indenture or the Securities except as provided in the Indenture. The Trustee may
require indemnity satisfactory to it before it enforces the Indenture or the
Securities. Subject to certain limitations, Holders of a majority in aggregate
principal amount of the Securities then outstanding may direct the Trustee in
its exercise of any trust or power. The Trustee may withhold from Holders notice
of any continuing default (except a default in payment of principal, any
premium, or interest) if it determines that withholding notice is in their
interests. The Company is required to file periodic reports with the Trustee as
to the absence of default.

14.  TRUSTEE DEALINGS WITH THE COMPANY

     LaSalle Bank National Association, the Trustee under the Indenture, in its
individual or any other capacity, may make loans to, accept deposits from and
perform services for the Company or an Affiliate of the Company and may
otherwise deal with the Company or an Affiliate of the Company, as if it were
not the Trustee.

15.  NO RECOURSE AGAINST OTHERS

     A director, officer, employee or shareholder, as such, of the Company shall
not have any liability for any obligations of the Company under the Securities
or the Indenture or for any claim based on, in respect of or by reason of such
obligations or their creation. The Holder of this Security by accepting this
Security waives and releases all such liability. The waiver and release are part
of the consideration for the issuance of this Security.

16.  AUTHENTICATION

     This Security shall not be valid until the Trustee or an authenticating
agent manually or by facsimile signs the certificate of authentication on the
other side of this Security.

17.  ABBREVIATIONS AND DEFINITIONS

     Customary abbreviations may be used in the name of the Holder or an
assignee, such as: TEN COM (= tenants in common), TEN ENT (= tenants by the
entireties), JT TEN (= joint tenants with right of survivorship and not as
tenants in common), CUST (= Custodian) and UGMA (= Uniform Gifts to Minors Act).

                                       A-9

<PAGE>

     All terms defined in the Indenture and used in this Security but not
specifically defined herein are used herein as so defined.

18.  INDENTURE TO CONTROL; GOVERNING LAW

     In the case of any conflict between the provisions of this Security and the
Indenture, the provisions of the Indenture shall control. This Security shall be
governed by, and construed in accordance with, the laws of the State of New York
without giving effect to applicable principles of conflicts of law to the extent
that the application of the laws of another jurisdiction would be required
thereby.

     The Company will furnish to any Holder, upon written request and without
charge, a copy of the Indenture. Requests may be made to: PolyMedica
Corporation, 701 Edgewater Drive, Suite 360, Wakefield, Massachusetts 01880,
Attention: Chief Financial Officer.

                                      A-10
<PAGE>

                                 ASSIGNMENT FORM

To assign this Security, fill in the form below:

I or we assign and transfer this Security to

     ---------------------------------------------------------------------------
                  (Insert assignee's soc. sec. or tax I.D. no.)

     ---------------------------------------------------------------------------

     ---------------------------------------------------------------------------

     ---------------------------------------------------------------------------

     ---------------------------------------------------------------------------
              (Print or type assignee's name, address and zip code)

and irrevocably appoint

     ---------------------------------------------------------------------------
     agent to transfer this Security on the books of the Company. The agent may
     substitute another to act for him or her.

                                        Your Signature:

Date:
      -------------------------------   ----------------------------------------
                                        (Sign exactly as your name appears on
                                        the other side of this Security)

     *Signature guaranteed by:

By:
    ---------------------------------

----------
*    The signature must be guaranteed by an institution which is a member of one
     of the following recognized signature guaranty programs: (i) the Securities
     Transfer Agent Medallion Program (STAMP); (ii) the New York Stock Exchange
     Medallion Program (MSP); (iii) the Stock Exchange Medallion Program (SEMP);
     or (iv) such other guaranty program acceptable to the Trustee.

                                       B-1

<PAGE>

                                CONVERSION NOTICE

To convert this Security into Common Stock of the Company, check the box: [ ]

To convert only part of this Security, state the principal amount to be
converted (must be $1,000 or a integral multiple of $1,000): $_________.

If you want the stock certificate made out in another person's name, fill in the
form below:

     ---------------------------------------------------------------------------
                  (Insert assignee's soc. sec. or tax I.D. no.)

     ---------------------------------------------------------------------------

     ---------------------------------------------------------------------------

     ---------------------------------------------------------------------------

     ---------------------------------------------------------------------------
              (Print or type assignee's name, address and zip code)

                                        Your Signature:

Date:
      -------------------------------   ----------------------------------------
                                        (Sign exactly as your name appears on
                                        the other side of this Security)

     *Signature guaranteed by:

By:
    ---------------------------------

----------
*    The signature must be guaranteed by an institution which is a member of one
     of the following recognized signature guaranty programs: (i) the Securities
     Transfer Agent Medallion Program (STAMP); (ii) the New York Stock Exchange
     Medallion Program (MSP); (iii) the Stock Exchange Medallion Program (SEMP);
     or (iv) such other guaranty program acceptable to the Trustee.

                                       B-2

<PAGE>

                           OPTION TO ELECT REPURCHASE
                            UPON A FUNDAMENTAL CHANGE

To: PolyMedica Corporation

     The undersigned registered owner of this Security hereby irrevocably
acknowledges receipt of a notice from PolyMedica Corporation (the "Company") as
to the occurrence of a Fundamental Change with respect to the Company and
requests and instructs the Company to redeem the entire principal amount of this
Security, or the portion thereof (which is $1,000 or an integral multiple
thereof) below designated, in accordance with the terms of the Indenture
referred to in this Security at a purchase price equal to the Fundamental Change
Purchase Price, payable in Cash.

Dated:
       ------------------------------

                                        ----------------------------------------
                                        Signature(s) must be guaranteed by a
                                        qualified guarantor institution with
                                        membership in an approved signature
                                        guarantee program pursuant to Rule
                                        17Ad-15 under the Securities Exchange
                                        Act of 1934.

                                        ----------------------------------------
                                        Signature Guaranty

Principal amount to be redeemed (in
an integral multiple of $1,000, if
less than all):

NOTICE: The signature to the foregoing Election must correspond to the Name as
written upon the face of this Security in every particular, without alteration
or any change whatsoever.

                                       B-3

<PAGE>

                    SCHEDULE OF EXCHANGES OF SECURITIES (4)

     The following exchanges, redemptions, repurchases or conversions of a part
of this global Security have been made:

<TABLE>
<CAPTION>
   PRINCIPAL AMOUNT
OF THIS GLOBAL SECURITY    AUTHORIZED                                     AMOUNT OF
FOLLOWING SUCH DECREASE   SIGNATORY OF    AMOUNT OF DECREASE IN          INCREASE IN
   DATE OF EXCHANGE        SECURITIES       PRINCIPAL AMOUNT          PRINCIPAL AMOUNT
     (OR INCREASE)          CUSTODIAN    OF THIS GLOBAL SECURITY   OF THIS GLOBAL SECURITY
-----------------------   ------------   -----------------------   -----------------------
<S>                       <C>            <C>                       <C>

</TABLE>

----------
(4)  This phrase should be included only if the Security is a Global Security.

                                       B-4

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