Exhibit 10.1


                                  PROCEPT, INC.

                                 1989 Stock Plan

As amended through April 16, 1996 and
As further amended by the Board of Directors on
  March 17, 1997 and approved by the Stockholders
  on June 16, 1997

         1.  Purpose. This 1989 Stock Plan (the "Plan") is intended to provide
incentives: (a) to the officers and other employees of Procept, Inc. (the
"Company"), its parent (if any) and any present or future subsidiaries of the
Company (collectively, "Related Corporations") by providing them with
opportunities to purchase stock in the Company pursuant to options granted
hereunder which qualify as "incentive stock options" under Section 422(b) of the
Internal Revenue Code of 1986, as amended (the "Code") ("ISO" or "ISOs"); (b) to
officers, employees and consultants of the Company and Related Corporations by
providing them with opportunities to purchase stock in the Company pursuant to
options granted hereunder which do not qualify as ISOs ("Non-Qualified Option"
or "Non-Qualified Options"); (c) to officers, employees and consultants of the
Company and Related Corporations by providing them with awards of stock in the
Company ("Awards"); and (d) to officers, employees and consultants of the
Company and Related Corporations by providing them with opportunities to make
direct purchases of Stock in the Company ("Purchases"). Both ISOs and
Non-Qualified Options are referred to hereafter individually as an "Option" and
collectively as "Options". Options, Awards and authorizations to make Purchases
are referred to hereafter collectively as "Stock Rights". As used herein, the
terms "parent" and "subsidiary" mean "parent corporation" and "subsidiary
corporation", respectively, as those terms are defined in Section 424 of the
Code.

         2.  Administration of the Plan.

             A. Board or Committee Administration. The Plan shall be
administered by the Board of Directors of the Company (the "Board"). The Board
may appoint a Stock Plan Committee (the "Committee") of three or more of its
members to administer this Plan. The members of such Committee shall be
"disinterested" within the meaning of Rule 16b-3 promulgated under the
Securities Exchange Act of 1934, as amended. Hereinafter, all references in this
Plan to the "Committee" shall mean the Board if no Committee has been appointed.
Subject to ratification of the grant or authorization of each Stock Right by the
Board (if so required by applicable state law), and subject to the terms of the
Plan, the Committee shall have the authority to (i) determine the employees of
the Company and Related Corporations (from among the class of employees eligible
under paragraph 3 to receive ISOs) to whom ISOs may be granted, and to determine
(from among the class of individuals and entities eligible under paragraph 3 to
receive Non-Qualified Options and Awards and to make Purchases) to whom Non-
Qualified Options, Awards and authorizations to make Purchases may be granted;
(ii) determine the time or times at which Options or Awards may be granted or
Purchases made; (iii) determine the option price of shares subject to each
Option, which price shall not be less than the minimum price specified in
paragraph 6, and the purchase price of shares subject to each Purchase; (iv)
determine whether each Option granted shall be an ISO or a Non-Qualified Option;
(v) determine (subject to paragraph 7) the time or times when each Option shall
become exercisable and the duration of the exercise period; (vi) determine
whether restrictions such as repurchase options are to be imposed on shares
subject to Options, Awards and Purchases and the nature of such restrictions, if
any, and (vii) interpret the Plan and prescribe and rescind rules and
regulations relating to it. If the Committee determines to issue a Non-
Qualified Option, it shall take whatever actions it deems necessary, under
Section 422 of the Code and the regulations promulgated thereunder, to ensure
that such Option is not treated as an ISO. The


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interpretation and construction by the Committee of any provisions of the Plan
or of any Stock Right granted under it shall be final unless otherwise
determined by the Board. The Committee may from time to time adopt such rules
and regulations for carrying out the Plan as it may deem best. No member of the
Board or the Committee shall be liable for any action or determination made in
good faith with respect to the Plan or any Stock Right granted under it.

             B. Committee Actions. The Committee may select one of its members
as its chairman, and shall hold meetings at such time and places as it may
determine. Acts by a majority of the Committee, or acts reduced to or approved
in writing by a majority of the members of the Committee, shall be the valid
acts of the Committee. From time to time the Board may increase the size of the
Committee and appoint additional members thereof, remove members (with or
without cause) and appoint new members in substitution therefor, fill vacancies
however caused, or remove all members of the Committee and thereafter directly
administer the Plan.

         3.  Eligible Employees and Others. ISOs may be granted to any employee
of the Company or any Related Corporation. Those officers of the Company who are
not employees may not be granted ISOs under the Plan. Non-Qualified Options,
Awards and authorizations to make Purchases may be granted to any employee or
officer (whether or not also an employee) or consultant of the Company or any
Related Corporation. The Committee may take into consideration a recipient's
individual circumstances in determining whether to grant an ISO, a Non-Qualified
Option, an Award or an authorization to make a Purchase. Granting of any Stock
Right to any individual or entity shall neither entitle that individual or
entity to, nor disqualify such individual or entity from, participating in any
other grant of Stock Rights.

         4.  Stock. The stock subject to Options, Awards and Purchases shall be
authorized but unissued shares of Common Stock of the Company, par value $.01
per share (the "Common Stock"), or shares of Common Stock reacquired by the
Company in any manner. The aggregate number of shares which may be issued
pursuant to the Plan is 1,887,118. The aggregate number of shares which may be
issued pursuant to the Plan is subject to further adjustment as provided in
paragraph 13. Any such shares may be issued as ISOs, Non-Qualified Options or
Awards, or to persons or entities making Purchases, so long as the number of
shares so issued does not exceed such number, as adjusted. If any Option granted
under the Plan shall expire or terminate for any reason without having been
exercised in full or shall cease for any reason to be exercisable in whole or in
part, or if the Company shall reacquire any unvested shares issued pursuant to
Options, Awards or Purchases, the unpurchased shares subject to such Options and
any unvested shares so reacquired by the Company shall again be available for
grants of Stock Rights under the Plan.

         5.  Granting of Stock Rights. Stock Rights may be granted under the
Plan at any time on or after April 18, 1989 and prior to April 18, 1999. The
date of grant of a Stock Right under the Plan will be the date specified by the
Committee at the time it grants the Stock Rights; provided, however, that such
date shall not be prior to the date on which the Committee acts to approve the
grant. The Committee shall have the right, with the consent of the optionee, to
convert an ISO granted under the Plan to a Non-Qualified Option pursuant to
paragraph 16.

         6.  Minimum Option Price; ISO Limitations.

             A. Price for Non-Qualified Options. The exercise price per share
specified in the agreement relating to each Non-Qualified Option granted under
the Plan shall in no event be less than the lesser of (i) the book value per
share of Common Stock as of the end of the fiscal year of the


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Company immediately preceding the date of such grant, or (ii) fifty percent
(50%) of the fair market value per share of Common Stock on the date of such
grant.

             B. Price of ISOs. The exercise price per share specified in the
agreement relating to each ISO granted under the Plan shall not be less than the
fair market value per share of Common Stock on the date of such grant. In the
case of an ISO to be granted to an employee owning stock possessing more than
ten percent (10%) of the total combined voting power of all classes of stock of
the Company or any Related Corporation, the price per share specified in the
agreement relating to such ISO shall not be less than one hundred ten percent
(110%) of the fair market value per share of Common Stock on the date of grant.

             C. $100,000 Annual Limitation on ISOs. Each eligible employee may
be granted ISOs only to the extent that, in the aggregate under this Plan and
all incentive stock option plans of the Company and any Related Corporation,
such ISOs do not become exercisable for the first time by such employee during
any calendar year in a manner which would entitle the employee to purchase more
than $100,000 in fair market value (determined at the time the ISOs were
granted) of Common Stock in that year. Any options granted to an employee in
excess of such amount will be granted as Non-Qualified Options.

             D. Determination of Fair Market Value. If, at the time an Option is
granted under the Plan, the Company's Common Stock is publicly traded, "fair
market value" shall be determined as of the last business day for which the
prices or quotes discussed in this sentence are available prior to the date such
Option is granted and shall mean (i) the average (on that date) of the high and
low prices of the Common Stock on the principal national securities exchange on
which the Common Stock is traded, if the Common Stock is then traded on a
national securities exchange; or (ii) the last reported sale price (on that
date) of the Common Stock on the NASDAQ National Market System, if the Common
Stock is not then traded on a national securities exchange; or (iii) the closing
bid price (or average of bid prices) last quoted (on that date) by an
established quotation service for over-the-counter securities, if the Common
Stock is not reported on the NASDAQ National Market System. However, if the
Common Stock is not publicly traded at the time an Option is granted under the
Plan, "fair market value" shall be deemed to be the fair value of the Common
Stock as determined by the Committee after taking into consideration all factors
which it deems appropriate, including, without limitation, recent sale and offer
prices of the Common Stock in private transactions negotiated at arm's length.

         7.  Option Duration. Subject to earlier termination as provided in
paragraphs 9 and 10, each Option shall expire on the date specified by the
Committee, but not more than (i) ten years and one day from the date of grant in
the case of Non-Qualified Options, (ii) ten years from the date of grant in the
case of ISOs generally, and (iii) five years from the date of grant in the case
of ISOs granted to an employee owning stock possessing more than ten percent
(10%) of the total combined voting power of all classes of stock of the Company
or any Related Corporation. Subject to earlier termination as provided in
paragraphs 9 and 10, the term of each ISO shall be the term set forth in the
original instrument granting such ISO, except with respect to any part of such
ISO that is converted into a Non- Qualified Option pursuant to paragraph 16.

         8.  Exercise of Option. Subject to the provisions of paragraphs 9 and
through 12, each Option granted under the Plan shall be exercisable as follows:

             A. Vesting. The option shall either be fully exercisable on the
date of grant or shall become exercisable thereafter in such installments as the
Committee may specify.


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             B. Full Vesting of Installments. Once an installment becomes
exercisable it shall remain exercisable until expiration or termination of the
Option, unless otherwise specified by the Committee.

             C. Partial Exercise. Each Option or installment may be exercised at
any time or from time to time, in whole or in part, for up to the total number
of shares with respect to which it is then exercisable.

             D. Acceleration of Vesting. The Committee shall have the right to
accelerate the date of exercise or vesting of any installment of any Option;
provided that the Committee shall not, without the consent of an optionee,
accelerate the exercise date of any installment of any Option granted to any
employee as an ISO (and not previously converted into a Non-Qualified Option
pursuant to paragraph 16) if such acceleration would violate the annual vesting
limitation contained in Section 422(d) of the Code, as described in paragraph
6(C).

         9.  Termination of Employment. If an ISO optionee ceases to be employed
by the Company and all Related Corporations other than by reason of death or
disability as defined in paragraph 10, no further installments of such
optionee's ISOs shall become exercisable or vested, and such optionee's ISOs
shall terminate after the passage of ninety (90) days from the date of
termination of such optionee's employment, but in no event later than on their
specified expiration dates, except to the extent that such ISOs (or unexercised
installments thereof) have been converted into Non-Qualified Options pursuant to
paragraph 16. Employment shall be considered as continuing uninterrupted during
any bona fide leave of absence (such as those attributable to illness, military
obligations or governmental service) provided that the period of such leave does
not exceed 90 days or, if reemployment is guaranteed by statute. A bona fide
leave of absence with the written approval of the Committee shall not be
considered an interruption of employment under the Plan, provided that such
written approval contractually obligates the Company or any Related Corporation
to continue the employment of the optionee after the approved period of absence.
ISOs granted under the Plan shall not be affected by any change of employment
within or among the Company and Related Corporations, so long as the optionee
continues to be an employee of the Company or any Related Corporation. Nothing
in the Plan shall be deemed to give any grantee of any Stock Right the right to
be retained in employment or other service by the Company or any Related
Corporation for any period of time.

         10. Death; Disability.

             A. Death. If an ISO optionee ceases to be employed by the Company
and all Related Corporations by reason of such optionee's death, any ISO of such
optionee may be exercised, to the extent of the number of shares with respect to
which such optionee could have exercised it on the date of such optionee's
death, by such optionee's estate, personal representative or beneficiary who has
acquired the ISO by will or by the laws of descent and distribution, at any time
prior to the earlier of the specified expiration date of the ISO or 180 days
from the date of such optionee's death.

             B. Disability. If an ISO optionee ceases to be employed by the
Company and all Related Corporations by reason of such optionee's disability,
such optionee shall have the right to exercise any ISO held by such optionee on
the date of termination of employment, to the extent of the number of shares
with respect to which such optionee could have exercised it on that date, at any
time prior to the earlier of the specified expiration date of the ISO or 180
days from the date of the termination of such optionee's employment. For the
purposes of the Plan, the term "disability" shall mean "permanent and total
disability" as defined in Section 22(e)(3) of the Code or successor statute.


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         11. Assignability. No Option shall be assignable or transferable by the
optionee except by will or by the laws of descent and distribution, and during
the lifetime of the optionee each Option shall be exercisable only by such
optionee.

         12. Terms and Conditions of Options. Options shall be evidenced by
instruments (which need not be identical) in such forms as the Committee may
from time to time approve. Such instruments shall conform to the terms and
conditions set forth in paragraphs 6 through 11 hereof and may contain such
other provisions as the Committee deems advisable which are not inconsistent
with the Plan, including restrictions applicable to shares of Common Stock
issuable upon exercise of Options. In granting any Non-Qualified Option, the
Committee may specify that such Non-Qualified Option shall be subject to the
restrictions set forth herein with respect to ISOs, or to such other termination
and cancellation provisions as the Committee may determine. The Committee may
from time to time confer authority and responsibility on one or more of its own
members and/or one or more officers of the Company to execute and deliver such
instruments. The proper officers of the Company are authorized and directed to
take any and all action necessary or advisable from time to time to carry out
the terms of such instruments.

         13. Adjustments. Upon the occurrence of any of the following events, an
optionee's rights with respect to Options granted to such optionee hereunder
shall be adjusted as hereinafter provided, unless otherwise specifically
provided in the written agreement between the optionee and the Company relating
to such Option:

             A. Stock Dividends and Stock Splits. If the shares of Common Stock
shall be subdivided or combined into a greater or smaller number of shares or if
the Company shall issue any shares of Common Stock as a stock dividend on its
outstanding Common Stock, the number of shares of Common Stock deliverable upon
the exercise of Options shall be appropriately increased or decreased
proportionately, and appropriate adjustments shall be made in the purchase price
per share to reflect such subdivision, combination or stock dividend.

             B. Consolidation or Mergers. If the Company is to be consolidated
with or acquired by another entity in a merger, sale of all or substantially all
of the Company's assets or otherwise (an "Acquisition"), the Committee or the
board of directors of any entity assuming the obligations of the Company
hereunder (the "Successor Board"), shall, as to outstanding Options, either (i)
make appropriate provision for the continuation of such Options by substituting
on an equitable basis for the shares then subject to such Options the
consideration payable with respect to the outstanding shares of Common Stock in
connection with the Acquisition; or (ii) upon written notice to the optionees,
provide that all Options must be exercised, to the extent then exercisable,
within a specified number of days of the date of such notice, at the end of
which period the Options shall terminate; or (iii) terminate all Options in
exchange for a cash payment equal to the excess of the fair market value of the
shares subject to such Options (to the extent then exercisable) over the
exercise price thereof.

             C. Recapitalization or Reorganization. In the event of a
recapitalization or reorganization of the Company (other than a transaction
described in subparagraph B above) pursuant to which securities of the Company
or of another corporation are issued with respect to the outstanding shares of
Common Stock, an optionee upon exercising an Option shall be entitled to receive
for the purchase price paid upon such exercise the securities such optionee
would have received if such optionee had exercised such optionee's Option prior
to such recapitalization or reorganization.

             D. Modification of ISOs. Notwithstanding the foregoing, any
adjustments made pursuant to subparagraphs A, B or C with respect to ISOs shall
be made only after the Committee, after consulting with counsel for the Company,
determines whether such adjustments would constitute a


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"modification" of such ISOs (as that term is defined in Section 424 of the Code)
or would cause any adverse tax consequences for the holders of such ISOs. If the
Committee determines that such adjustments made with respect to ISOs would
constitute a modification of such ISOs, it may refrain from making such
adjustments.

             E. Dissolution or Liquidation. In the event of the proposed
dissolution or liquidation of the Company, each Option will terminate
immediately prior to the consummation of such proposed action or at such other
time and subject to such other conditions as shall be determined by the
Committee.

             F. Issuances of Securities. Except as expressly provided herein, no
issuance by the Company of shares of stock of any class, or securities
convertible into shares of stock of any class, shall affect, and no adjustment
by reason thereof shall be made with respect to, the number or price of shares
subject to Options. No adjustments shall be made for dividends paid in cash or
in property other than securities of the Company.

             G. Fractional Shares. No fractional shares shall be issued under
the Plan and the optionee shall receive from the Company cash in lieu of such
fractional shares.

             H. Adjustments. Upon the happening of any of the foregoing events
described in subparagraphs A, B or C above, the class and aggregate number of
shares set forth in paragraph 4 hereof that are subject to Stock Rights which
previously have been or subsequently may be granted under the Plan shall also be
appropriately adjusted to reflect the events described in such subparagraphs.
The Committee or the Successor Board shall determine the specific adjustments to
be made under this paragraph 13 and, subject to paragraph 2, its determination
shall be conclusive.

If any person or entity owning restricted Common Stock obtained by exercise of a
Stock Right made hereunder receives shares or securities or cash in connection
with a corporate transaction described in subparagraphs A, B or C above as a
result of owning such restricted Common Stock, such shares or securities or cash
shall be subject to all of the conditions and restrictions applicable to the
restricted Common Stock with respect to which such shares or securities or cash
were issued, unless otherwise determined by the Committee or the Successor
Board.

         14. Means of Exercising Stock Rights. A Stock Right (or any part or
installment thereof) shall be exercised by giving written notice to the Company
at its principal office address. Such notice shall identify the Stock Right
being exercised and specify the number of shares as to which such Stock Right is
being exercised, accompanied by full payment of the purchase price therefor
either (a) in United States dollars in cash or by check, or (b) at the
discretion of the Committee, through delivery of shares of Common Stock having a
fair market value equal as of the date of the exercise to the cash exercise
price of the Stock Right, or (c) at the discretion of the Committee, by delivery
of the grantee's personal recourse note being interest payable not less than
annually at no less than 100% of the lowest applicable Federal rate, as defined
in Section 1274(d) of the Code, or (d) at the discretion of the Committee, by
any combination of (a), (b) and (c) above. If the Committee exercises its
discretion to permit payment of the exercise price of an ISO by means of the
methods set forth in clauses (b), (c), or (d) of the preceding sentence, such
discretion shall be exercised in writing at the time of the grant of the ISO in
question. The holder of a Stock Right shall not have the rights of a shareholder
with respect to the shares covered by such holder's Stock Right until the date
of issuance of a stock certificate to such holder for such shares. Except as
expressly provided above in paragraph 13 with respect to changes in
capitalization and stock dividends, no adjustment shall be made for dividends or
similar rights for which the record date is before the date such stock
certificate is issued.


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         15. Term and Amendment of Plan. This Plan was adopted by the Board on
April 18, 1989, subject (with respect to the validation of ISOs granted under
the Plan) to approval of the Plan by the stockholders of the Company at the next
Meeting of Stockholders or, in lieu thereof, by written consent. If the approval
of stockholders is not obtained by April 18, 1990, any grants of ISOs under the
Plan made prior to that date will be rescinded. The Plan shall expire on April
18, 1999 (except as to Options outstanding on that date). Subject to the
provisions of paragraph 5 above, Stock Rights may be granted under the Plan
prior to the date of stockholder approval of the Plan. The Board may terminate
or amend the Plan in any respect at any time, except that, without the approval
of the stockholders obtained within 12 months before or after the Board adopts a
resolution authorizing any of the following actions: (a) the total number of
shares that may be issued under the Plan may not be increased (except by
adjustment pursuant to paragraph 13); (b) the provisions of paragraph 3
regarding eligibility for grants of ISOs may not be modified; (c) the provisions
of paragraph 6(B) regarding the exercise price at which shares may be offered
pursuant to ISOs may not be modified (except by adjustment pursuant to paragraph
13); and (d) the expiration date of the Plan may not be extended. Except as
otherwise provided in this paragraph 15, in no event may action of the Board or
stockholders alter or impair the rights of a grantee, without such grantee's
consent, under any Stock Right previously granted to such grantee.

         16. Conversion of ISOs into Non-Qualified Options; Termination of ISOs.
The Committee, at the written request of any optionee, may in its discretion
take such actions as may be necessary to convert such optionee's ISOs (or any
installments or portions of installments thereof) that have not been exercised
on the date of conversion into Non-Qualified Options at any time prior to the
expiration of such ISOs, regardless of whether the optionee is an employee of
the Company or a Related Corporation at the time of such conversion. Such
actions may include, but not be limited to, extending the exercise period or
reducing the exercise price of the appropriate installments of such Options. At
the time of such conversion, the Committee (with the consent of the optionee)
may impose such conditions on the exercise of the resulting Non-Qualified
Options as the Committee in its discretion may determine, provided that such
conditions shall not be inconsistent with this Plan. Nothing in the Plan shall
be deemed to give any optionee the right to have such optionee's ISOs converted
into Non-Qualified Options, and no such conversion shall occur until and unless
the Committee takes appropriate action. The Committee, with the consent of the
optionee, may also terminate any portion of any ISO that has not been exercised
at the time of such termination.

         17. Application of Funds. The proceeds received by the Company from the
sale of shares pursuant to Options granted and Purchases authorized under the
Plan shall be used for general corporate purposes.

         18. Governmental Regulation. The Company's obligation to sell and
deliver shares of the Common Stock under this Plan is subject to the approval of
any governmental authority required in connection with the authorization,
issuance or sale of such shares.

         19. Withholding of Additional Income Taxes. Upon the exercise of a
Non-Qualified Option, the grant of an Award, the making of a Purchase of Common
Stock, for less than its fair market value, the making of a Disqualifying
Disposition (as defined in paragraph 20) or the vesting of restricted Common
Stock acquired on the exercise of a Stock Right hereunder, the Company, in
accordance with Section 3402(a) of the Code, may require the optionee, Award
recipient or purchaser to pay additional withholding taxes in respect of the
amount that is considered compensation includable in such person's gross income.
The Committee in its discretion may condition (i) the exercise of an Option,
(ii) the grant of an Award, (iii) the making of a Purchase of Common Stock for
less than its fair market value, or (iv) the vesting of restricted Common Stock
acquired by exercising a Stock Right, on the grantee's payment of such
additional withholding taxes.


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         20. Notice to Company of Disqualifying Disposition. Each employee who
receives an ISO must agree to notify the Company in writing immediately after
the employee makes a Disqualifying Disposition of any Common Stock acquired
pursuant to the exercise of an ISO. A Disqualifying Disposition is any
disposition (including any sale) of such Common Stock before the later of (a)
two years after the date the employee was granted the ISO, or (b) one year after
the date the employee acquired Common Stock by exercising the ISO. If the
employee has died before such stock is sold, these holding period requirements
do not apply and no Disqualifying Disposition can occur thereafter.

         21. Governing Law; Construction. The validity and construction of the
Plan and instruments evidencing Stock Rights shall be governed by the laws of
the State of Delaware, or the laws of any jurisdiction in which the Company or
its successors in interest may be organized. In construing this Plan, the
singular shall include the plural.


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