Document:

EXHIBIT 4.1

                             SENTIGEN HOLDING CORP.

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

                             SUBSCRIPTION AGREEMENT

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

                                  INSTRUCTIONS

                IMPORTANT: PLEASE READ CAREFULLY BEFORE SIGNING.
           SIGNIFICANT REPRESENTATIONS ARE CONTAINED IN THIS DOCUMENT.

               THERE ARE TWO AGREEMENTS ATTACHED. BOTH AGREEMENTS
                  NEED TO BE COMPLETED AND EXECUTED AS FOLLOWS:

1. Fill in the missing information on Page 1.

2. Individual Investors must complete Question 7.7 and sign the signature page
   on Pages 4 and 8.

3. Entity Investors must complete Question 7.8 (certain persons affiliated with
   the entity may be required to complete Question 7.7 and sign on page 4) and
                       sign the signature page on Page 9.

                       DELIVER THE EXECUTED AGREEMENTS TO:

                            GRAUBARD MOLLEN & MILLER
                                600 THIRD AVENUE
                            NEW YORK, NEW YORK 10016
                        ATTENTION: DANIELLE GHORRA, ESQ.

                ALONG WITH PAYMENT FOR THE SHARES SUBSCRIBED FOR.

<PAGE>

                          Print Name of Subscriber ----------------------------

                             SUBSCRIPTION AGREEMENT

 IMPORTANT: Please refer to Schedule 1 commencing on page 10 when reviewing this
      document. The Schedule is incorporated herein and made a part hereof.

The Company and the Investor hereby agree as follows:

         1. Subscription for Shares. I (sometimes referred to herein as the
"Investor") hereby subscribe for and agree to purchase $__________ of the
securities being offered by SENTIGEN HOLDING CORP. ("Sentigen" or "Company")
described on Schedule 1 hereto ("Shares") upon the terms and conditions of the
offering ("Offering") described in this Agreement and Schedule 1. Graubard
Mollen & Miller ("GM&M" or the "Escrow Agent") is acting as the Escrow Agent for
the Offering.

         2. Offering Period.  The Shares are currently being offered by the
Company through the date set forth on Schedule 1 ("Termination Date").

         3. Investor Delivery of Documents and Payment. I hereby tender to GM&M,
as Escrow Agent for the Company (i) the full purchase price by check or wire in
accordance with the instructions set forth on Schedule 1 and (ii) two manually
executed copies of this Subscription Agreement. Prior to the earlier of a
Closing (as defined in Section 5 hereof) or the Termination Date, my check or
wire transfer will be held by GM&M in a non-interest bearing escrow account
subject to the terms and conditions herein and in the escrow agreement between
GM&M, as escrow agent, and the Company. If the Company does not receive and
accept the minimum subscriptions required to have a Closing as set forth on
Schedule 1 by the Termination Date, my payment will be returned to me without
interest or deduction.

         4. Acceptance or Rejection of Subscription. The Company has the right
to reject this subscription for Shares, in whole or in part for any reason and
at any time prior to the Closing, notwithstanding prior receipt by me of notice
of acceptance of my subscription. In the event of the rejection of this
subscription, my payment will be returned promptly to me without interest or
deduction and this Subscription Agreement will have no force or effect. The
Shares subscribed for herein will not be deemed issued to or owned by me until
two copies of this Subscription Agreement have been executed by me and
countersigned by the Company and the Closing with respect to my subscription has
occurred.

         5. Closing and Delivery of Shares. The closing of the Offering
("Closing") may occur at the office of GM&M at any time prior to the Termination
Date and after the sale by the Company of the required amount as set forth on
Schedule 1, as determined by the Company. In the event my subscription is
accepted and there is a Closing, my payment will be released to the Company and
the certificates representing the Shares will be delivered promptly to me, along
with a fully executed version of this Agreement.

         6. Offering to Accredited Investors. This Offering is limited to
accredited investors as defined in Section 2(15) of the Securities Act of 1933,
as amended ("Securities Act"), and Rule 501 promulgated thereunder, and is being
made without registration under the Securities Act in reliance upon the
exemptions contained in Sections 3(b), 4(2) and/or 4(6) of the Securities Act
and applicable state securities laws. As indicated by my responses on page 4 or

<PAGE>

5 hereof, the Investor is an "accredited investor" within the meaning of Section
2(15) of the Securities Act and Rule 501 promulgated thereunder.

         7.  Investor Representations and Warranties.  I acknowledge, represent
and warrant to the Company as follows:

             7.1 Obligations of the Company and the Investor. The Company
has no obligation to me other than as set forth in this Agreement, including but
not limited to the obligations described in Section 7.1 at Schedule 1. I have
read and agree to the restrictions set forth in Section 7.1 of Schedule 1. I am
aware that, except for any rescission rights that may be provided under
applicable laws, I am not entitled to cancel, terminate or revoke this
subscription, and any agreements made in connection herewith will survive my
death or disability. In order to induce the Company to issue and sell the Shares
to me, I represent and warrant that the information relating to me stated herein
is true and complete as of the date hereof and will be true and complete as of
the date on which my purchase of Shares becomes effective. If, prior to the
final consummation of the offer and sale of the Shares, there should be any
change in such information or any of such information becomes incorrect or
incomplete, I agree to notify the Company and supply the Company promptly with
corrective information.

              7.2 Information About the Company.

                  (a)  I have read the Confidential Private Placement Memorandum
dated September 29, 2000 relating to the Offering ("Memorandum") and all
exhibits listed therein and fully understand the Memorandum, including the
Section entitled "Risk Factors" and its exhibits, including any business plans
or financial projections of the Company. I have been given access to full and
complete information regarding the Company and have utilized such access to my
satisfaction for the purpose of verifying the information included in the
Memorandum and exhibits thereto, and I have either met with or been given
reasonable opportunity to meet with officers of the Company for the purpose of
asking reasonable questions of such officers concerning the terms and conditions
of the offering of the Shares and the business and operations of the Company and
all such questions have been answered to my full satisfaction. I have also been
given an opportunity to obtain any additional relevant information to the extent
reasonably available to the Company. I have received all information and
materials regarding the Company that I have reasonably requested. After my
reading of the materials about the Company, I understand that there is no
assurance as to the future performance of the Company. I have not relied on
information other than what can be found in the Memorandum in making my decision
to invest in the Shares.

                  (b)  I have received no representation or warranty from the
Company or any of its respective officers, directors, employees or agents in
respect of my investment in the Company. I am not participating in the offer as
a result of or subsequent to: (i) any advertisement, article, notice or other
communication published in any newspaper, magazine or similar media or broadcast
over television, radio or the Internet or (ii) any seminar or meeting whose
attendees have been invited by any general solicitation or general advertising.

          7.3    Speculative Investment. I am aware that the Shares are a
speculative investment that involves a high degree of risk including, but not
limited to, the risk of losses from operations of the Company and the total loss
of my investment. I have such knowledge and experience in financial and business
matters as to be capable of evaluating the merits and risks of an investment in
the Shares and have obtained, in my judgment, sufficient information from the
Company to evaluate the merits and risks of an investment in the Company. I have
not utilized any person as my purchaser representative (as defined in Regulation

                                        2

<PAGE>

D) in connection with evaluating such merits and risks and have relied solely
upon my own investigation in making a decision to invest in the Company. I have
been urged to seek independent advice from my professional advisors relating to
the suitability of an investment in the Company in view of my overall financial
needs and with respect to the legal and tax implications of such investment. I
believe that the investment in the Shares is suitable for me based upon my
investment objectives and financial needs, and I have adequate means for
providing for my current financial needs and contingencies and have no need for
liquidity with respect to my investment in the Company. The investment in the
Company does not constitute all or substantially all of my investment portfolio.

             7.4   Restrictions on Transfer. I understand that (i) the Shares
have not been registered under the Securities Act or the securities laws of
certain states in reliance on specific exemptions from registration, (ii) no
securities administrator of any state or the federal government has recommended
or endorsed this Offering or made any finding or determination relating to the
fairness of an investment in the Company, and (iii) the Company is relying on my
representations and agreements for the purpose of determining whether this
transaction meets the requirements of the exemptions afforded by the Securities
Act and certain state securities laws. I acknowledge that there is no assurance
that the Company will file any Registration Statement for the Shares I am
purchasing, that such Registration Statement, if filed, will be declared
effective or, if declared effective, that the Company will be able to keep it
effective until I sell the Shares registered thereon.

                  7.5 Limited Market for Shares. I am purchasing the Shares for
my own account for investment and not with a view to, or for sale in connection
with, any subsequent distribution of the Shares, nor with any present intention
of selling or otherwise disposing of all or any part of the Shares. I understand
that there is a limited market at present and there may not be any market in the
future for the Shares. I agree that (i) the purchase of the Shares is a
long-term investment, (ii) I may have to bear the economic risk of investment
for an indefinite period of time because the Shares have not been registered
under the Securities Act and may never be registered and, cannot be resold,
pledged, assigned, or otherwise disposed of unless they are subsequently
registered under the Securities Act and under applicable securities laws of
certain states or an exemption from such registration is available. I understand
that the Company is under no obligation to register the Shares, except as may be
set forth in Section 7.1 of Schedule 1, or to assist me in complying with any
exemption from such registration under the Securities Act or any state
securities laws. I hereby authorize the Company to place a legend denoting the
restrictions on the certificates representing the Shares.

                  7.6 Entity Authority. If the Investor is a corporation,
partnership, company, trust, employee benefit plan, individual retirement
account, Keogh Plan, or other tax-exempt entity, it is authorized and qualified
to become an investor in the Company and the person signing this Subscription
Agreement and Investor Information Statement on behalf of such entity has been
duly authorized by such entity to do so.

                                        3

<PAGE>

       7.7 Accredited Investor Status For Individuals. (INVESTORS
THAT ARE CORPORATIONS, LIMITED LIABILITY COMPANIES, PARTNERSHIPS, REVOCABLE
TRUSTS, IRREVOCABLE TRUSTS, EMPLOYEE BENEFIT PLAN TRUSTS AND INDIVIDUAL
RETIREMENT ACCOUNTS SHOULD IGNORE THE FOLLOWING QUESTIONS AND PROCEED TO SECTION
7.8).

         (a) I am an accredited investor within the meaning of Section
2(15) of the Securities Act and Rule 501 promulgated thereunder because (check
any boxes that apply):

               |_|  My individual annual income during each of the two most
                    recent years exceeded $200,000 and I expect my annual income
                    during the current year will exceed $200,000.

               |_|  If I am married, my joint annual income with my spouse
                    during each of the two most recent years exceeded $300,000
                    and I expect my joint annual income with my spouse during
                    the current year will exceed $300,000.

               |_|  My individual or joint (together with my spouse) net worth
                    (including my home, home furnishings and automobiles)
                    exceeds $1,000,000.

          (b)   The aggregate value of my assets is approximately $___________.

          (c)   My aggregate liabilities are approximately $___________.

          (d)   My current and expected income is:

                 YEAR                        INCOME
                 ----                        ------
           2000 (estimated)             $

             1999 (Actual)              $

             1998 (Actual)              $

         Individual Investors may skip to Section 7.9 on page 6. Each person
associated with an Entity Investor who is required under Section 7.8 to
separately complete the questions in this Section 7.7 must sign the below
confirmation:

                  I hereby confirm the answers to Section 7.7 are true and
                  correct in all respects as of the date hereof and will be on
                  the date of the purchase of Shares.

                  Executed this ____ day of ________, 200__.

                  Signature:
                                    -------------------------------------
                  Print Name:
                                    -------------------------------------

                                       4

<PAGE>

           7.8    Accredited Investor Status for Entities.  (INVESTORS WHO ARE
INDIVIDUALS SHOULD IGNORE THESE QUESTIONS.)

                  (a)    The entity is a (check applicable box):

                    |_|  Corporation

                    |_|  Limited Liability Company

                    |_|  Partnership

                    |_|  Revocable Trust

                    |_|  Irrevocable Trust (if the Investor is an Irrevocable
                         Trust, a supplemental questionnaire must be completed
                         by the person directing the decision for the trust.
                         Please contact Danielle Ghorra, Esq. at (212) 818-8877
                         for a copy of such supplemental questionnaire.)

                    |_|  Employee Benefit Plan Trust

                    |_|  Individual Retirement Account (If you are an IRA, skip
                         (b))

                  (b)     Check all boxes which apply:

                    |_|  The Entity was not formed for the specific purpose of
                         investing in the Company

                    |_|  The Entity has total assets in excess of $5 million
                         dollars

                    |_|  For Employee Benefit Plan Trusts Only: The decision to
                         invest in the Company was made by a plan fiduciary, as
                         defined in Section 3(21) of ERISA, who is either a
                         bank, insurance company or registered investment
                         advisor.

                 (c) If you did not check the first two of the three boxes in
Question (b) or if the Entity is an Individual Retirement Account, a
Self-directed Employee Benefit Plan Trust or an Irrevocable Trust, list the name
of each person who:

                    (i)  owns an equity interest in the Entity (i.e., each
                         shareholder if the Entity is a corporation, each member
                         if the Entity is a limited liability company and each
                         partner if the Entity is a partnership); or

                    (ii) is a grantor for the revocable trust or Individual
                         Retirement Account; or

                    (iii) is the person making the investment decision for a
                         self-directed Employee Benefit Plan Trust; or

                    (iv) is the person making the investment decisions for an
                         Irrevocable Trust.

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

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

       EACH PERSON LISTED ABOVE MUST SEPARATELY COMPLETE AND SUBMIT TO THE
            COMPANY THE ANSWERS TO QUESTION 7.7 AND SIGN THE WRITTEN
                     CONFIRMATION AT THE END OF SECTION 7.7.

                                        5

<PAGE>

                  7.9 No Offer Until Determination of Suitability. I acknowledge
that any delivery to me of the documents relating to the Offering of the Shares
prior to the determination by the Company of my suitability will not constitute
an offer of the Shares until such determination of suitability is made.

                  7.10 For Florida Residents. The Shares have not been
registered under the Securities Act of 1933, as amended, or the Florida
Securities Act, by reason of specific exemptions thereunder relating to the
limited availability of the Offering. The Shares cannot be sold, transferred, or
otherwise disposed of to any person or entity unless subsequently registered
under the Securities Act of 1933, as amended, or the Securities Act of Florida,
if such registration is required. Pursuant to Section 517.061(11) of the Florida
Securities Act, when sales are made to five (5) or more persons in Florida, any
sale made pursuant to Subsection 517.061(11) of the Florida Securities Act will
be voidable by such Florida purchaser either within three days after the first
tender of consideration is made by the purchaser to the issuer, an agent of the
issuer, or an escrow agent, or within three days after the availability of the
privilege is communicated to such purchaser, whichever occurs later. In
addition, as required by Section 517.061(11)(a)(3), Florida Statutes and by Rule
3-500.05(a) thereunder, if I am a Florida resident I may have, at the offices of
the Company, at any reasonable hour, after reasonable notice, access to the
materials set forth in the Rule that the Company can obtain without unreasonable
effort or expense.

         8. Indemnification. I hereby agree to indemnify and hold harmless the
Company and its officers, directors, stockholders, employees, agents, and
attorneys against any and all losses, claims, demands, liabilities, and expenses
(including reasonable legal or other expenses incurred by each such person in
connection with defending or investigating any such claims or liabilities,
whether or not resulting in any liability to such person or whether incurred by
the indemnified party in any action or proceeding between the indemnitor and
indemnified party or between the indemnified party and any third party) to which
any such indemnified party may become subject, insofar as such losses, claims,
demands, liabilities and expenses (a) arise out of or are based upon any untrue
statement or alleged untrue statement of a material fact made by me and
contained herein, or (b) arise out of or are based upon any breach by me of any
representation, warranty, or agreement made by me contained herein.

         9. Severability; Remedies.  In the event any parts of this Subscription
Agreement are found to be void, the remaining provisions of this Subscription
Agreement are nevertheless binding with the same effect as though the void parts
were deleted.

         10. Governing Law and Jurisdiction. This Subscription Agreement will be
deemed to have been made and delivered in New York City and will be governed as
to validity, interpretation, construction, effect and in all other respects by
the internal laws of the State of New York. Each of the Company and the Investor
hereby (i) agrees that any legal suit, action or proceeding arising out of or
relating to this Subscription Agreement will be instituted exclusively in New
York State Supreme Court, County of New York, or in the United States District
Court for the Southern District of New York, (ii) waives any objection to the
venue of any such suit, action or proceeding and the right to assert that such
forum is not a convenient forum for such suit, action or proceeding, (iii)
irrevocably consents to the jurisdiction of the New York State Supreme Court,
County of New York, and the United States District Court for the Southern
District of New York in any such suit, action or proceeding, (iv) agrees to
accept and acknowledge service of any and all process that may be served in any
such suit, action or proceeding in New York State Supreme Court, County of New
York or in the United States District Court for the Southern District of New
York and (v) agrees that service of process upon it mailed by certified mail to
its address set forth on my signature page will be deemed in every respect
effective service of process upon it in any suit, action or proceeding.

                                        6

<PAGE>

          11. Counterparts. This Subscription Agreement may be executed in one
or more counterparts, each of which will be deemed an original but all of which
together will constitute one and the same instrument. The execution of this
Subscription Agreement may be by actual or facsimile signature.

          12. Benefit.  This Subscription Agreement is binding upon and inures
to the benefit of the parties hereto and their respective heirs, executors,
personal representatives, successors and assigns.

         13. Notices. All notices, offers, acceptance and any other acts under
this Subscription Agreement (except payment) must be in writing, and is
sufficiently given if delivered to the addressees in person, by overnight
courier service, or, if mailed, postage prepaid, by certified mail (return
receipt requested), and will be effective three days after being placed in the
mail if mailed, or upon receipt or refusal of receipt, if delivered personally
or by courier or confirmed telecopy, in each case addressed to a party. All
communications to me should be sent to my preferred address on the signature
page hereto. All communications to the Company should be sent to the addresses
set forth on Schedule 1. Each party may designate another address by notice to
the other parties.

         14. Oral Evidence. This Subscription Agreement constitutes the entire
agreement between the parties with respect to the subject matter hereof and
supersedes all prior oral and written agreements between the parties hereto with
respect to the subject matter hereof. This Subscription Agreement may not be
changed, waived, discharged, or terminated orally, but rather, only by a
statement in writing signed by the party or parties against which enforcement or
the change, waiver, discharge or termination is sought.

         15. Section Headings.  Section headings herein have been inserted for
reference only and will not be deemed to limit or otherwise affect, in any
matter, or be deemed to interpret in whole or in part, any of the terms or
provisions of this Subscription Agreement.

         16. Survival of Representations, Warranties and Agreements.  The
representations, warranties and agreements contained herein will survive the
delivery of, and the payment for, the Shares.

         17. Acceptance of Subscription.  The Company may accept this
Subscription Agreement at any time for all or any portion of the Shares
subscribed for by executing a copy hereof as provided and notifying me within a
reasonable time thereafter.

                                        7

<PAGE>

         SIGNATURE PAGE FOR INDIVIDUAL INVESTORS - COMPLETE ALL INFORMATION
         ---------------------------------------

Name: ___________________     Name of  Joint Investor (if any): _______________

Residence Address:  ___________________________________________________________

Telephone:  (H) ___________________ (W) _____________________ Fax _____________

Occupation: _________________________   Employer: _____________________________

Business Address: _____________________________________________________________

Send communications to:

                        |_|    Home      |_|    Office        |_|    E-Mail:

                        E-mail address: ____________________________________

Age:  _______________

Social Security Number:  ____________________

Check manner in which Shares are to be held:

|_|   Individual       |_|    Tenants in     |_|    Joint Tenants with
      Ownership               Common                Right of Survivorship
                                                    (both parties must sign)
|_|   Community                              |_|    Other (please indicate)
      Property                                      __________________

ALL INVESTORS MUST SIGN AND PRINT        The foregoing subscription is accepted
NAME BELOW:                              and the Company hereby agrees to be
                                         bound by its terms.
Signature:  _________________________    SENTIGEN HOLDING CORP.
Print Name: _________________________
Signature:  _________________________    By:__________________________________
Print Name:___________________________      Name:
                                            Title:
                                            Date:

                                        8

<PAGE>

SIGNATURE PAGE FOR ENTITY INVESTORS - COMPLETE ALL INFORMATION
-----------------------------------

Name of Entity: ______________________________________________________________

Address of Principal Office:  ________________________________________________

Telephone:   ___________________          Fax:  ___________________

Taxpayer Identification Number:  ______________________

Check type of Entity:

|_|  Employee Benefit    |_| Limited      |_|  General      |_|  Individual
     Plan Trust              Partnership       Partnership       Retirement
                                                                 Account

|_|  Limited Liability   |_| Trust        |_|  Corporation  |_|  Other (please
     Company                                                     indicate)
                                                                  _____________

Date of Formation or incorporation: ___________   State of Formation or
                                                  incorporation: __________

Describe the business of the Entity: _______________________________________

List the names and positions of the executive officers, managing members,
partners or trustees authorized to act with respect to investments by the Entity
generally and specify who has the authority to act with respect to this
investment.

Name                Position           Authority for this investment (yes or no)
________________________________________________________________________________

________________________________________________________________________________

________________________________________________________________________________

________________________________________________________________________________

ALL INVESTORS MUST SIGN AND PRINT     The foregoing subscription is accepted and
NAME BELOW:                           the Company hereby agrees to be bound by
                                      its terms.
                                      SENTIGEN HOLDING CORP.
----------------------------------
Signature of Authorized Signatory:
Name:
Title:
                                      By:__________________________________
                                         Name:
                                         Title:
                                         Date:
<PAGE>

                                   SCHEDULE 1

1.   Subscription. SENTIGEN HOLDING CORP. ("Sentigen" or the "Company") is
     offering 830,000 shares of common stock, par value $.01 per share
     ("Shares") of the Company, at a purchase price of $6.00 per Share.

2.   Offering Period. The Company is offering the Shares until the earlier of
     (i) the date by which all the Shares being offered are sold, or (ii) thirty
     (30) days after the date of the Memorandum, unless such latter date is
     extended, without notice to the subscriber, by the Company to a date not
     later than an additional thirty (30) days thereafter ("Termination Date").

3.   Purchase. If you are tendering a check, make it payable to "Graubard Mollen
     & Miller, as attorneys for Sentigen Holding Corp." If you are paying by
     wire transfer, please instruct your bank to wire funds to:

                           Bankers Trust Company
                           280 Park Avenue
                           New York, New York  10017
                           ABA Routing Number: 021001033
                           Attn.:  Florence Blanchard

                           For credit to:
                           Graubard Mollen & Miller
                           Attorney Trust Account - IOLA Funds
                           Account No. 35228777

                  All wires should stipulate the name of the subscriber,
including those sent by brokers or other agents.

                  Prior to wiring funds, please contact Rosemary Perdue at (212)
818-8745 and give her the following information:

                  (1)      when the money will be wired;
                  (2)      the name and address of the bank from which the
                           money is being wired; and
                  (3)      the exact dollar amount being wired.

4.   Not applicable.

5.   Closing. The Offering is being made on an "all or none" basis. In order for
     the Offering to close, the Company must receive and accept subscriptions
     for 830,000 Shares ($4,980,000).

6.   Not applicable.

7.1      Obligations of the Company and the Investor

         A.    Registration Rights.

               (1) Company's Obligation to Register. Within six months after the
          date of the Closing, the Company shall file a Registration Statement
          ("Registration Statement") under the

                                       10

<PAGE>

         Securities Act of 1933 ("Securities Act") with the Securities and
         Exchange Commission ("SEC") registering for resale the Shares purchased
         in the Offering. The Company shall use its best efforts to have the
         Registration Statement declared effective by the SEC and be kept
         current and effective until all the Shares registered thereunder are
         sold or can be sold freely under an appropriate exemption, without
         limitation.

                  (2) Covenants. If and whenever the Company is required by the
         provisions of this Agreement to effect the registration of any of the
         Shares under the Securities Act, the Company shall:

                           (a) file with the Commission a Registration Statement
         with respect to such Shares and use its best efforts to cause that
         Registration Statement to become effective as soon as possible;

                           (b) use its best efforts to prepare and file with the
         Commission any amendments and supplements to the Registration Statement
         and the prospectus included in the Registration Statement as may be
         necessary to comply with the provisions of the Securities Act
         (including the anti-fraud provisions thereof), and to keep the
         Registration Statement effective until the earlier of the date which
         all of the Shares are sold and the date that the Shares may be sold
         pursuant to Rule 144 without restrictions;

                           (c) as expeditiously as possible furnish to each
         holder of the Shares sold in this Offering ("Holder") such reasonable
         numbers of copies of the Prospectus which forms a part of the
         Registration Statement, including any preliminary Prospectus, in
         conformity with the requirements of the Securities Act, and such other
         documents as such Investor may reasonably request in order to
         facilitate the public sale or other disposition of the Shares owned by
         such Investor;

                           (d) as expeditiously as possible use its best efforts
         to register or qualify the Registrable Securities covered by the
         Registration Statement under the securities or Blue Sky laws of such
         states as the Investors shall reasonably request, and do any and all
         other acts and things that may be necessary or desirable to enable the
         Investors to consummate the public sale or other disposition in such
         states of the Registrable Securities owned by the Investor; provided,
         however, that the Company shall not be required in connection with this
         paragraph to qualify as a foreign corporation or execute a general
         consent to service of process in any jurisdiction;

                           (e) as expeditiously as possible, cause all such
         Shares to be listed on each securities exchange or automated quotation
         system on which similar securities issued by the Company are then
         listed;

                           (f) promptly arrange the services of a transfer agent
         and registrar for all such Registrable Securities not later than the
         effective date of such registration statement;

                           (g) as expeditiously as possible, notify each
         Investor, promptly after it shall receive notice thereof, of the time
         when such Registration Statement has become effective or a supplement
         to any Prospectus forming a part of such Registration Statement has
         been filed; and

                                       11

<PAGE>

                           (h) as expeditiously as possible following the
         effectiveness of such Registration Statement, notify each seller of
         such Shares of any request by the Commission for the amending or
         supplementing of such Registration Statement or Prospectus.

                           If the Company has delivered a Prospectus to the
         Investors and after having done so the Prospectus is amended to comply
         with the requirements of the Securities Act, the Company shall promptly
         notify the Investors and, if requested, the Investors shall immediately
         cease making offers of Shares and return all Prospectuses to the
         Company or affix a sticker to the Prospectuses which is provided by the
         Company. If returned, the Company shall promptly provide the Investors
         with revised Prospectuses and, following receipt of the revised
         Prospectuses, the Investors shall be free to resume making offers of
         the Shares.

                           (4) Fees and Expenses. In any registration statement
         in which Shares are included pursuant to this Section, the Company
         shall bear all expenses and pay all fees incurred in connection
         therewith, excluding underwriting discounts and commissions payable
         with respect to the Shares and the fees and expenses of any
         professionals engaged by the Holders, but including the expenses of
         providing a reasonable number of copies of the prospectus contained
         therein to the Holders.

                           (5) Indemnification by Company. The Company shall
         indemnify the Holders of the Shares to be sold pursuant to any
         registration statement hereunder, the officers and directors of each
         Holder and each person, if any, who controls such Holders within the
         meaning of Section 15 of the Securities Act or Section 20(a) of the
         Securities Exchange Act of 1934, as amended ("Exchange Act"), or any
         state securities law or regulation, against all loss, claim, damage,
         expense or liability (including all reasonable attorneys' fees and
         other expenses reasonably incurred in investigating, preparing or
         defending against any claim whatsoever incurred by the indemnified
         party in any action or proceeding between the indemnitor and
         indemnified party or between the indemnified party and any third party
         or otherwise) to which any of them may become subject under the
         Securities Act, the Exchange Act or any other statute or at common law
         or otherwise under the laws of foreign countries, arising from such
         registration statement or based upon any untrue statement or alleged
         untrue statement of a material fact contained in (i) any preliminary
         prospectus, the registration statement or prospectus (as from time to
         time each may be amended and supplemented); (ii) any post-effective
         amendment or amendments or any new registration statement and
         prospectus in which is included the Shares; or (iii) any application or
         other document or written communication (collectively called
         "application") executed by the Company or based upon written
         information furnished by the Company in any jurisdiction in order to
         qualify the Shares under the securities laws thereof or filed with the
         Securities and Exchange Commission, any state securities commission or
         agency, Nasdaq or any securities exchange; or the omission or alleged
         omission therefrom of a material fact required to be stated therein or
         necessary to make the statements therein, in light of the circumstances
         under which they were made, not misleading, unless such statement or
         omission is made in reliance upon, and in conformity with, written
         information furnished to the Company by and with respect to such
         registered Holders ("Purchaser Information") expressly for use in any
         preliminary prospectus, the registration statement or prospectus, or
         any amendment or supplement thereof, or in any application, as the case
         may be, or unless the indemnities failed to deliver a final prospectus
         in which the material misstatement or omission was corrected. The
         Company agrees promptly to notify such Investors of the commencement of
         any litigation or proceedings against the Company or any of its
         officers, directors or controlling persons in connection with the issue
         and sale or resale of the Shares or in connection with the registration
         statement or prospectus.

                                       12

<PAGE>

                           (6) Elimination of Registration Rights.
         Notwithstanding anything to the contrary in Sections 1 and 2 above, no
         Holder of Shares shall be entitled to have such securities registered
         under the Securities Act in accordance with the provisions of such
         Sections if, (a) in the opinion of counsel to the Company, they may be
         sold without restriction pursuant to Rule 144(k) promulgated under the
         Securities Act and any restrictive legends under the Securities Act are
         removed from the certificates representing such securities and any stop
         transfer order for such certificates is removed; or (b) the Holder has
         not complied with the Company's request for information typically
         included in registration statements with respect to the sellers of
         securities and their ownership of securities.

                           (7) Successors and Assigns. The registration rights
         granted to the Holders inure to the benefit of all the Holders'
         successors, heirs, pledges, assignees, transferees and purchasers of
         the Shares.

8.-12.   Not applicable.

13.      Notices.  All communications to the Company should be sent to:

                  SENTIGEN HOLDING CORP.
                  580 Marshall Street
                  Phillipsburg, New Jersey 08865
                  Attention: Joseph K. Pagano, President and Chairman
                  Tel.:  (800) 543-6029
                  Fax:  (908)454-4792

         with copies to:

                           Graubard Mollen & Miller
                           600 Third Avenue
                           New York, New York 10016
                           Attention: David Alan Miller, Esq.
                           Tel: (212) 818-8661
                           Fax:  (212) 818-8881

14.-17.  Not applicable.

                                       13<PAGE>   1
                                                                    EXHIBIT 10.1

                                 PEERLOGIC, INC.

                            JULY 2000 INCENTIVE PLAN

     1.   PURPOSE. The purpose of this July 2000 Incentive Plan is to attract
and retain directors, consultants, officers and other Employees for PeerLogic,
Inc., a California corporation, and its Subsidiaries and to provide to such
persons incentives and rewards for superior performance

     2.   DEFINITIONS. As used in this Plan,

          "BOARD" means the Board of Directors of the Company and, to the extent
of any delegation by the Board to a committee (or subcommittee thereof) pursuant
to Section 12 of this Plan, such committee (or subcommittee).

          "CODE" means the Internal Revenue Code of 1986, as amended from time
to time.

          "COMMON STOCK" means shares of the Common Stock of the Company or any
security into which such Common Stock may be changed by reason of any
transaction or event of the type referred to in Section 7 of this Plan.

          "COMPANY" means PeerLogic, Inc., a California corporation.

          "DATE OF GRANT" means, with respect to a grant of an Option, the date
specified by the Board on which such grant shall become effective (which date
shall not be earlier than the date on which the Board takes action with respect
thereto).

          "DIRECTOR" means a member of the Board.

          "EFFECTIVE DATE" means July 24, 2000, the date when the Plan was
adopted by the Board. The Plan shall be approved by the Company's shareholders
within 12 months before or after the Effective Date.

          "EMPLOYEE" means an individual who the Company has determined is an
employee for federal income tax withholding purposes. For the purposes of this
Plan, the continuous employment of the Optionee with the Company shall not be
deemed to have been interrupted, and the Optionee shall not be deemed to have
ceased to be an Employee of the Company, by reason of the transfer of his or her
employment among the Company and its Subsidiaries or a leave of absence of not
more than thirty (30) days unless otherwise approved by the Board. However, with
respect to grants of Incentive Stock Options, any leave of absence longer than
ninety (90) days will interrupt the Optionee's continuous employment and the
Optionee will cease to be an Employee of the Company as of the 91st day of the
leave, unless the Optionee's right to reemployment is guaranteed either by
statute or contract.

          "INCENTIVE STOCK OPTIONS" means Options that are intended to qualify
as "incentive stock options" under Section 422 of the Code or any successor
provision. In no event, however, shall any provision of this Plan apply to any
Previously Granted Option if such

<PAGE>   2

application would constitute a "modification, extension or renewal" of that
Previously Granted Option within the meaning of Section 424(h) of the Code, or
otherwise constitute the granting of a new option under such Section or under
any other law or regulation governing Incentive Stock Options.

          "INITIAL PUBLIC OFFERING" means the first underwritten public offering
of the Company's equity securities registered under the Securities Act, or such
other event as a result of which outstanding equity securities of the Company
(or any successor entity) shall be publicly traded.

          "MARKET VALUE PER SHARE" means, as of any particular date, the fair
market value of the Common Stock as determined in good faith by the Board.

          "NON-STATUTORY STOCK OPTIONS" means Options that are not intended to
or do not qualify as "incentive stock options" under Section 422 of the Code or
any successor provision.

          "OPTION" means the right to purchase Common Stock upon exercise of an
option granted pursuant to Section 4 of this Plan.

          "OPTIONEE" means the optionee named in the Stock Option Agreement.

          "OPTION PRICE" means the purchase price for one share of Common Stock
payable on exercise of an Option.

          "OPTIONED STOCK" means Common Stock acquired upon the exercise of an
Option.

          "PARTICIPANT" means a person who is selected by the Board to receive
benefits under this Plan and who is at the time a consultant, an officer, an
Employee or a Director of the Company or any one or more of its Subsidiaries. To
be eligible for an Option under this Plan, a consultant must provide bona fide
services to the Company or a Subsidiary of the parent of the Company and the
services may not be in connection with the offer or sale of securities in a
capital-raising transaction, and do not directly or indirectly promote or
maintain a market for the Company's securities. Only an Employee of the Company
or any Subsidiaries may be eligible to receive an Incentive Stock Option. Any
individual, including an Employee, who has performed, or is expected to perform,
services for or on behalf of the Company or any Subsidiaries may be eligible to
receive a Non-Statutory Stock Option.

          "PLAN" means the PeerLogic, Inc. July 2000 Incentive Plan, as amended
from time to time.

          "RIGHT OF FIRST REFUSAL" means the Company's right of first refusal as
set forth in Section 5 of this Plan.

          "SECURITIES ACT" means the Securities Act of 1933, as amended, or any
successor statute thereof, and the rules and regulations thereunder promulgated
from time to time by the Securities and Exchange Commission.

                                       2
<PAGE>   3

          "SHARES GRANTED" means the number of shares of Common Stock subject to
a grant of an Option.

          "STOCK OPTION AGREEMENT" means the agreement entered into by the
Company and Optionee pursuant to Section 8 of this Plan.

          "SUBSIDIARY" means a corporation, company or other entity

               (i)  Fifty percent (50%) or more of whose outstanding shares or
                    securities (representing the right to vote for the election
                    of directors or other managing authority) are, or

               (ii) Which does not have outstanding shares or securities (as may
                    be the case in a partnership, joint venture or
                    unincorporated association), but fifty percent (50%) or more
                    of whose ownership interest representing the right generally
                    to make decisions for such other entity is,

     now or hereafter, owned or controlled, directly or indirectly, by the
     Company. Notwithstanding the foregoing, in determining whether any Employee
     may be a Participant for purposes of any grant of Incentive Stock Options,
     "Subsidiary" means any corporation (other than the Company) in an unbroken
     chain of corporations beginning with the Company, if at the time of the
     granting of the Option, each of the corporations other than the last
     corporation in the unbroken chain own stock possessing 50% or more of the
     total combined voting power of all classes of stock in one of the other
     corporations in such chain.

          "VESTING COMMENCEMENT DATE" means the date that the Option begins to
vest and, generally, is the Date of Grant unless otherwise specified in the
Summary contained in the Stock Option Agreement.

     3.   SHARES AVAILABLE UNDER THE PLAN.

          (a)  Subject to adjustment as provided in Section 3(b) and Section 7
of this Plan, the number of shares of Common Stock that may be issued or
transferred upon the exercise of Options shall equal the total of One Million
Two Hundred (1,200,000) shares of Common Stock, plus any shares described in
Section 3(b).

          (b)  The number of shares available in Section 3(a) above shall be
adjusted to account for shares relating to grants that expire, are forfeited or
are transferred, surrendered or relinquished upon the payment of any Option
Price by the transfer to the Company of Common Stock or upon satisfaction of any
withholding amount. Upon payment in cash of the benefit provided by any award
granted under this Plan, any shares that were covered by that grant shall not
again be available for issue or transfer hereunder.

          (c)  Notwithstanding anything in this Section 3, or elsewhere in this
Plan to the contrary and subject to adjustment as provided in Section 7 of this
Plan, the aggregate number of shares of Common Stock actually issued or
transferred by the Company upon the exercise of Incentive Stock Options shall
not exceed 1,200,000.

                                       3
<PAGE>   4

     4.   OPTIONS. The Board may, from time to time and upon such terms and
conditions as it may determine, authorize the granting to Participants of
options to purchase shares of Common Stock. Each such grant may utilize any or
all of the authorizations, and shall be subject to all of the requirements
contained in the following provisions:

          (a)  Each grant shall specify the number of shares of Common Stock, as
determined by the Board, subject to the limitations set forth in Section 3 of
this Plan.

          (b)  Each grant shall specify an Option Price per share, which may be
less than the Market Value per Share on the Date of Grant; provided, however,
that the Option Price per share for an Incentive Stock Option may not be less
than the Market Value per Share on the Date of Grant. The Option Price may not
be less than 85% of the Market Value per Share on the Date of Grant. The Option
Price that is granted to a Participant who owns or with the application of
Section 424(d) of the Code is considered as owning more than 10% of the total
combined voting power of all classes of stock of the Company or its Subsidiaries
shall be at least 110% of the Market Value per Share on the Date of Grant.

          (c)  Each grant shall specify whether the Option Price shall be
payable (i) in cash, by check, or by a cash equivalent acceptable to the
Company; (ii) by cancellation of any indebtedness then owed by the Company to
the Optionee which is due and payable at the time of exercise; (iii) by the
actual or constructive transfer to the Company of nonforfeitable, nonrestricted
shares of Common Stock owned by the Optionee for at least 6 months (or other
consideration authorized pursuant to Section 4(d), (e), and (f)) having a value
at the time of exercise equal to the total Option Price; or (iv) by a
combination of such methods of payment.

          (d)  The Board may determine, at or after the Date of Grant, that
payment of the Option Price of any Option (other than an Incentive Stock Option)
may also be made in whole or in part in the form of shares of Common Stock that
are forfeitable or subject to restrictions on transfer (based, in each case, on
the Market Value per Share on the date of exercise). Unless otherwise determined
by the Board at or after the Date of Grant, whenever any Option Price is paid in
whole or in part by means of the consideration specified in this Section 4(d),
the shares of Common Stock received upon the exercise of the Options shall be
subject to such risks of forfeiture or restrictions on transfer as may
correspond to any that apply to the consideration surrendered.

          (e)  Any grant may provide for payment of the Option Price, in
installments, with or without interest, upon terms determined by the Board.

          (f)  Any grant may provide for deferred payment of the Option Price
from the proceeds of a sale through a broker on a date satisfactory to the
Company of some or all of the shares of Common Stock to which such exercise
relates.

          (g)  Successive grants may be made to the same Optionee whether or not
any Options previously granted to such Optionee remain unexercised.

          (h)  Each grant shall specify the period or periods of continuous
employment or service by the Optionee with the Company or any Subsidiary that is
necessary before the Option or installments thereof will vest and become
exercisable, as determined by the Board in

                                       4
<PAGE>   5

awarding the Previously Granted Option. The Option shall become exercisable at a
rate of at least 20% per year over five (5) years from the Date of Grant,
subject to reasonable conditions such as continued employment. For Options
granted to officers, consultants or Directors of the Company or any Subsidiary,
the Option may become fully exercisable at any time during a period established
by the Company.

          (i)  Unless otherwise approved by the Board, each Option shall be
subject to the Right of First Refusal in favor of the Company, as specified in
Section 5 of this Plan.

          (j)  Options granted under this Plan may be (i) options, including,
without limitation, Incentive Stock Options, that are intended to qualify under
particular provisions of the Code, (ii) options that are not intended so to
qualify ("Non-Statutory Stock Options"), or (iii) combinations of the foregoing.

          (k)  No Option shall be exercisable more than 10 years from the Date
of Grant. To the extent required for "Incentive Stock Option" status under
Section 422 of the Code, any Option granted to a Participant who owns or with
the application of Section 424(d) of the Code is considered as owning more than
10% of the total combined voting power of all classes of stock of the Company or
its Subsidiaries shall not be exercisable more than five (5) years from the Date
of Grant.

          (l)  If a Participant's employment with or service as a non-employee
Director or consultant to the Company or its Subsidiaries terminates due to the
Participant's death, permanent and total disability, retirement under a
retirement plan of the Company or one of its Subsidiaries or for any other
reason, the Option shall thereafter be exercisable only in accordance with the
terms of the Stock Option Agreement evidencing such Option, or as otherwise
determined by the Board in its sole discretion. In no event shall the exercise
period be less than thirty (30) days from the date of termination or cessation
of services (other than a termination for cause as defined in the Stock Option
Agreement), unless such termination is caused by death or permanent and total
disability in which case the exercise period may not be less than six (6)
months.

          (m)  Neither the Plan nor each Option shall terminate on the effective
date of any of the following transactions or events:

               (i)  Dissolution or liquidation of the Company;

               (ii) Reorganization, merger or consolidation of the Company which
                    results in the outstanding shares being changed into, or
                    exchanged for, cash or property or securities of another
                    entity;

              (iii) Sale of substantially all of the Company's property to, or
                    the acquisition of more than 80% of the Company's
                    outstanding voting stock by, another corporation or person;
                    or

               (iv) Any other reorganization in which the Company is not the
                    surviving entity;

                                       5
<PAGE>   6

unless provisions are made for the assumption of this Option or the substitution
for this Option by a new stock option of the successor person or entity or a
parent or subsidiary thereof, with appropriate adjustment as to the number and
kinds of shares and per share exercise prices, as provided in Section 7 hereof.

          In the event of any transaction which will result in such termination,
the Company shall give to the Optionee written notice thereof at least ten (10)
days prior to the effective date of such transaction. Until such effective date,
the Optionee may exercise any portion of his or her Option which is or becomes
vested on or prior to such effective date, but after such effective date the
Optionee may not exercise his or her Option unless it is assumed or substituted
by the successor entity (or a parent or subsidiary thereof) as provided above.

          (n)  Each grant of Options shall be evidenced by a Stock Option
Agreement executed on behalf of the Company by an officer and delivered to the
Optionee and containing such terms and provisions, consistent with this Plan, as
the Board may approve.

          (o)  No Option shall be exercisable unless this Plan has been approved
by the Company's shareholders within 12 months before or after the Effective
Date. Any Option exercised before the shareholder approval is obtained will be
rescinded.

          (p)  An Optionee may exercise an Option in whole or in part at any
time and from time to time during the period within which an Option may be
exercised. To exercise an Option, an Optionee shall give written notice to the
Company specifying the number of shares of Common Stock to be purchased and
provide full payment of the Option Price and any other documentation that may be
required by the Company.

          (q)  An Optionee shall be treated for all purposes as the owner of
record of the number of shares of Common Stock purchased pursuant to exercise of
the Option (in whole or in part) as of the date the conditions set forth in
Section 4(p) are satisfied.

          (r)  To the extent required for "Incentive Stock Option" status under
Section 422 of the Code, the aggregate Market Value per Share (determined as of
the Date of Grant) of the shares of Common Stock with respect to which Incentive
Stock Options are exercisable for the first time by the Optionee during any
calendar year under this Plan and/or any other stock option plan of the Company
(within the meaning of Section 424 of the Code) shall not exceed $100,000. The
portion of the Incentive Stock Options with an aggregate Market Value per Share
in excess of $100,000 as determined in this subsection will be treated as a
non-statutory option that is not intended to be an Incentive Stock Option.

          (s)  The Board also may permit Optionees to elect to defer the
issuance of shares of Common Stock under this Plan pursuant to such rules,
procedures or programs as it may establish for purposes of this Plan. The Board
also may provide that deferred issuances include the payment or crediting of
dividend equivalents or interest on the deferral amounts.

          (t)  Any certificate or replacement certificate issued by the Company
evidencing any shares of Optioned Stock shall be endorsed as follows:

                                       6
<PAGE>   7

          THE SECURITIES REPRESENTED BY THIS CERTIFICATE MAY BE SUBJECT TO
          CERTAIN TRANSFER AND OTHER RESTRICTIONS SET FORTH IN (A) THE COMPANY'S
          JULY 2000 INCENTIVE PLAN AND (B) THAT CERTAIN STOCK OPTION AGREEMENT
          BY AND BETWEEN THE COMPANY AND THE HOLDER OF THIS CERTIFICATE WHOSE
          NAME APPEARS ON THE REVERSE SIDE OF THIS CERTIFICATE. COPIES OF SUCH
          DOCUMENTS ARE ON FILE AND MAY BE INSPECTED AT THE PRINCIPAL OFFICE OF
          THE COMPANY. THE HOLDER OF THIS CERTIFICATE, BY ACCEPTANCE OF IT,
          AGREES TO BE BOUND BY THE PROVISIONS OF SUCH DOCUMENTS.

          THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN
          REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE
          "SECURITIES ACT"), OR UNDER STATE SECURITIES LAWS AND (i) MAY NOT BE
          SOLD, PLEDGED, HYPOTHECATED, TRANSFERRED OR OTHERWISE DISPOSED OF
          UNLESS SUCH SALE, PLEDGE, HYPOTHECATION, TRANSFER OR OTHER DISPOSITION
          SHALL HAVE BEEN REGISTERED UNDER SAID ACT AND IN COMPLIANCE WITH ANY
          APPLICABLE STATE SECURITIES LAWS OR UNTIL THE COMPANY SHALL HAVE
          RECEIVED A LEGAL OPINION SATISFACTORY IN FORM AND SUBSTANCE TO THE
          COMPANY, THAT SUCH SECURITIES MAY BE LEGALLY SOLD OR OTHERWISE
          TRANSFERRED WITHOUT SUCH REGISTRATION AND COMPLIANCE, AND (ii) ARE
          SUBJECT TO RESTRICTIONS ON TRANSFER AND OTHER RESTRICTIONS CONTAINED
          IN THE COMPANY'S JULY 2000 INCENTIVE PLAN AND THAT CERTAIN STOCK
          OPTION AGREEMENT. THESE SHARES MAY BE SUBJECT TO THE COMPANY'S RIGHT
          OF FIRST REFUSAL.

          (u)  In addition to all other transfer restrictions in this Plan, no
transfer of any Option or shares of Optioned Stock other than a transfer to the
Company shall be effective unless such transfer is made (i) pursuant to an
effective registration statement under the Securities Act and a valid
qualification under applicable state securities or blue sky laws, or (ii)
without registration under the Securities Act and qualification under applicable
state securities or blue sky laws as a result of the availability of an
exemption from registration and qualification under such laws, and, unless
waived by the Company in writing, the transferring person shall have furnished
the Company an opinion of counsel to that effect, such counsel and such opinion
being reasonably satisfactory in form and substance to the Company and its
counsel.

          (v)  Any attempt to transfer or encumber any shares of the Common
Stock not in accordance with this Plan shall be null and void ab initio and
neither the issuer of such securities nor any transfer agent of such securities
shall give any effect to such attempted transfer or encumbrance in its stock
records.

                                       7
<PAGE>   8

          (w)  Each Option may provide that an Optionee must agree not to sell,
transfer, make any short sale of, grant any option for the purchase of, or enter
into any hedging or similar transaction with the same economic effect as a sale,
any Optioned Stock of the Company held by Optionee for a period specified by the
representative of the underwriters of Common Stock of the Company not to exceed
ninety (90) days following the effective date of any registration statement of
the Company filed under the Securities Act. Each Option may provide that an
Optionee must agree to execute and deliver such other agreements as may be
reasonably requested by the Company or the underwriter which are consistent with
the foregoing or which are necessary to give further effect thereto. In
addition, if requested by the Company or the representative of the underwriters
of Common Stock of the Company, Optionee shall provide, within ten (10) days of
such request, such information as may be required by the Company or such
representative in connection with the completion of any public offering of the
Company's securities pursuant to a registration statement filed under the
Securities Act. The obligations described in this subsection shall not apply to
a registration relating solely to employee benefit plans on Form S-1 or Form S-8
or similar forms that may be promulgated in the future, or a registration
relating solely to a Commission Rule 145 transaction on Form S-4 or similar
forms that may be promulgated in the future. The Company may impose
stop-transfer instructions with respect to the shares of Common Stock subject to
the foregoing restriction until the end of said ninety (90) day period.

     5.   COMPANY'S RIGHT OF FIRST REFUSAL.

          (a)  EXERCISE OF RIGHT. If an Optionee desires to transfer all or any
part of the shares of the Optioned Stock to any person other than the Company
(an "OFFEROR"), the Optionee shall: (i) obtain in writing an irrevocable and
unconditional bona fide offer (the "OFFER") for the purchase thereof from the
Offeror; and (ii) give written notice (the "OPTION NOTICE") to the Company
setting forth the Optionee's desire to transfer such shares, which Option Notice
shall be accompanied by a photocopy of the Offer and shall set forth the name
and address of the Offeror and the price and terms of the Offer. Upon receipt of
the Option Notice, the Company shall have an assignable option to purchase such
shares of the Optioned Stock (the "COMPANY OPTIONED STOCK") specified in the
Option Notice, such option to be exercisable by giving, within ten (10) days
after receipt of the Option Notice, a written counter notice to the Optionee. If
the Company elects to purchase such shares of the Company Optioned Stock with
cash or a promissory note or a combination of these methods of payment, it shall
be obligated to purchase, and the Optionee shall be obligated to sell to the
Company, such shares of the Company Optioned Stock at the price and terms
indicated in the Offer within thirty (30) days from the date of delivery by the
Company of such counter-notice.

          (b)  SALE OF OPTIONED STOCK TO OFFEROR. The Optionee may, for 60 days
after the expiration of the 10-day option period as set forth in Section 5(a),
sell to the Offeror, pursuant to the terms of the Offer, any or all of such
shares of the Company Optioned Stock not purchased or agreed to be purchased by
the Company or its assignee. If any or all of such shares of the Company
Optioned Stock are not sold pursuant to an Offer within the time permitted
above, the unsold shares of the Company Optioned Stock shall remain subject to
the terms of this Section 5.

                                       8
<PAGE>   9

          (c)  ADJUSTMENTS FOR CHANGES IN CAPITAL STRUCTURE. If there shall be
any change in the Common Stock of the Company through merger, consolidation,
reorganization, recapitalization, stock dividend, stock split, combination or
exchange of shares, or the like, the restrictions contained in this Section 5
shall apply with equal force to additional and/or substitute securities, if any,
received by the Optionee in exchange for, or by virtue of his or her ownership
of, the Optioned Stock.

          (d)  FAILURE TO DELIVER OPTIONED STOCK. If the Optionee fails or
refuses to deliver on a timely basis duly endorsed certificates representing
shares of the Company Optioned Stock to be sold to the Company or its assignee
pursuant to this Section 5, the Company shall have the right to deposit the
purchase price for such shares of the Company Optioned Stock in a separate
account with any bank or trust company, giving notice of such deposit to the
Optionee, whereupon such shares of the Company Optioned Stock shall be deemed to
have been purchased by the Company. All such monies shall be held by the bank or
trust company for the benefit of the Optionee. All monies deposited with the
bank or trust company but remaining unclaimed for two years after the date of
deposit shall be repaid by the bank or trust company to the Company on demand,
and the Optionee shall thereafter look only to the Company for payment. The
Company may place a legend on any certificate for the shares of the Optioned
Stock delivered to the Optionee reflecting the restrictions on transfer provided
in this Section 5.

          (e)  TERMINATION OF COMPANY'S RIGHT OF FIRST REFUSAL. The Company's
Right of First Refusal will terminate on an Initial Public Offering.

     6.   TRANSFERABILITY. Incentive Stock Options shall be transferable by an
Optionee only by will or the laws of descent and distribution. Non-Statutory
Stock Options shall be transferable by an Optionee by will, the laws of descent
and distribution, an instrument to an inter vivos or testamentary trust in which
the Options are to be passed to beneficiaries upon the death of the trustor
(settlor), or gift to "immediate family" as that term is defined in 17 C.F.R.
240.16a-1(e). Except as otherwise determined by the Board, Options shall be
exercisable during the Optionee's lifetime only by the Optionee; or in the event
of Optionee's legal incapacity, by Optionee's guardian or legal representative
acting on behalf of the Optionee in a fiduciary capacity under state law and
court supervision; or in the event of transfer of a Non-Statutory Stock Option
by gift to "immediate family," by the "immediate family" to whom the
Non-Statutory Stock Option was transferred. In case of a transfer by instrument
to an inter vivos trust or by gift, the transfer will become effective (i) only
if reasonable prior notice thereof is delivered to the Company and such transfer
is thereafter effected in accordance with any terms and conditions that shall
have been made applicable thereto by the Company or the Board and (ii) where
such transferee shall be subject to the same terms and conditions hereunder as
the Participant.

     7.   ADJUSTMENTS.

          (a)  The Board shall adjust the number and kind of shares purchasable
by the outstanding Options granted hereunder, and the exercise price of such
shares, in any manner that the Board determines, in good faith, is equitably
required to prevent dilution or enlargement of the rights of Participants or
Optionees that would otherwise result in the event of a stock split,

                                       9
<PAGE>   10

reverse stock split, stock dividend, recapitalization, combination or
reclassification of the Company's shares.

          (b)  The Board may also adjust the number and kind of shares
purchasable by the outstanding Options granted hereunder and the exercise price
of such shares, in any manner that the Board determines, in good faith, is
equitably required to prevent dilution or enlargement of the rights of the
Participants or Optionees that would otherwise result in the event of:

               (i)  Merger, consolidation, spin-off, split-off, spin-out,
                    split-up, reorganization, partial or complete liquidation or
                    other distribution of assets, issuance of rights or warrants
                    to purchase securities; or

               (ii) Other corporate transaction or event having an effect
                    similar to any of the foregoing.

          (c)  Moreover, in the event of any such transaction or event, the
Board, in its discretion, may provide for the assumption or substitution for any
or all outstanding awards under this Plan, such alternative consideration as the
Board, in good faith, may determine to be equitable under the circumstances and
may require in connection therewith, the surrender of all awards so replaced.
The Board may also make or provide for such adjustments in the numbers of shares
specified in Section 3 of this Plan as the Board in its sole discretion,
exercised in good faith, may determine is appropriate to reflect any transaction
or event described in this Section 7; provided, however, that any such
adjustment to the number specified in Section 3 shall be made only if and to the
extent that such adjustment would not cause any Option intended to qualify as an
Incentive Stock Option to fail so to qualify.

     8.   STOCK OPTION AGREEMENT. The form of each Stock Option Agreement shall
be prescribed by the Board, and any Stock Option Agreement evidencing an
outstanding Option may with the concurrence of the affected Optionee be amended,
by the Board, provided that the terms and conditions of each Stock Option
Agreement and amendment are not inconsistent with this Plan and that no
amendment shall adversely affect the rights of the Optionee with respect to any
outstanding Option without the Optionee's consent.

     9.  FRACTIONAL SHARES. The Company shall not be required to issue any
fractional shares of Common Stock pursuant to this Plan. The Board may provide
for the elimination of fractions or for the settlement of fractions in cash.

     10.  WITHHOLDING TAXES. To the extent that the Company is required to
withhold federal, state, local or foreign taxes in connection with any payment
made or benefit realized by a Participant or other person under this Plan, and
the amounts available to the Company for such withholding are insufficient, it
shall be a condition to the receipt of such payment or the realization of such
benefit that the Participant or such other person make arrangements satisfactory
to the Company for payment of the balance of such taxes required to be withheld,
which arrangements (in the discretion of the Board) may include relinquishment
of a portion of such benefit. The Company and a Participant or such other person
may also make similar arrangements with respect to the payment of any taxes with
respect to which withholding is not required. Unless otherwise determined by the
Board, the minimum required withholding

                                       10
<PAGE>   11

obligations may be settled with shares of the Common Stock, including shares of
the Common Stock that are part of the award that gives rise to the withholding
requirement.

     11.  FOREIGN EMPLOYEES. In order to facilitate the making of any grant or
combination of grants under this Plan, the Board may provide for such special
terms for awards to Participants who are foreign nationals or who are employed
by the Company or any Subsidiary outside of the United States of America as the
Board may consider necessary or appropriate to accommodate differences in local
law, tax policy or custom. Moreover, the Board may approve such supplements to
or amendments, restatements or alternative versions of this Plan as it may
consider necessary or appropriate for such purposes, without thereby affecting
the terms of this Plan as in effect for any other purpose, and the Secretary or
other appropriate officer of the Company may certify any such document as having
been approved and adopted in the same manner as this Plan. No such special
terms, supplements, amendments or restatements, however, shall include any
provisions that are inconsistent with the terms of this Plan as then in effect
unless this Plan could have been amended to eliminate such inconsistency without
further approval by the shareholders of the Company.

     12.  ADMINISTRATION OF THE PLAN.

          (a)  This Plan shall be administered by the Board, which may from time
to time delegate all or any part of its authority under this Plan to a committee
of the Board (or subcommittee thereof) consisting of not less than two
non-employee Directors appointed by the Board. A majority of the committee (or
subcommittee) shall constitute a quorum, and the action of the members of the
committee (or subcommittee) present at any meeting at which a quorum is present,
or acts unanimously approved in writing, shall be the acts of the committee (or
subcommittee). To the extent of any such delegation, references in this Plan to
the Board shall be deemed to be references to any such committee or
subcommittee.

          (b)  The Board shall have the sole and exclusive power to interpret
and construe any provision of this Plan or of any agreement, notification or
document evidencing the grant of Options, and to make any determinations,
including, without limitation, factual findings, regarding an individual's
rights under this Plan. Any determination made by the Board pursuant to any
provision of this Plan or of any such agreement, notification or document shall
be final and conclusive. No member of the Board shall be liable for any such
action or determination made in good faith.

     13.  MISCELLANEOUS.

     (a)  The Board may at any time and from time to time amend this Plan in
whole or in part; provided, however, that any amendment which must be approved
by the shareholders of the Company in order to comply with applicable law, shall
not be effective unless and until such approval has been obtained. Presentation
of this Plan or any amendment hereof for shareholder approval shall not be
construed to limit the Company's authority to offer similar or dissimilar
benefits under other plans without shareholder approval.

     (b)  In case of termination of employment by reason of death, disability or
normal or early retirement, or in the case of hardship or other special
circumstances, of a

                                       11
<PAGE>   12

Participant who holds an Option not immediately exercisable in full, the Board
may, in its sole discretion, accelerate the time at which such Option may be
exercised or may waive any other limitation or requirement under any such award.

     (c)  This Plan shall not confer upon any Participant any right with respect
to continuance of employment or other service with the Company or any
Subsidiary, nor shall it interfere in any way with any right the Company or any
Subsidiary would otherwise have to terminate such Participant's employment or
other service at any time. Inclusion of a termination for cause provision in an
Option Agreement shall not confer upon the Optionee any right with respect to
the right of the Company to terminate the employment or service by the Company,
nor limit or affect in any manner the right of the Company to terminate the
employment or service or adjust the compensation of the Optionee.

     (d)  The Board may, with the concurrence of the affected Optionee, cancel
any Option granted under this Plan. In the event of any such cancellation, the
Board may authorize the granting of new Option (which may or may not cover the
same number of shares of Common Stock that had been the subject of any prior
option) in such manner, at such Option Price and subject to the same terms,
conditions and discretion as would have been applicable under this Plan had the
cancelled options not been granted.

     14.  TERM. No grant shall be made under this Plan more than 10 years after
the earlier of the date on which this Plan is first approved by the Board or the
shareholders of the Company, but all grants made on or prior to such termination
date shall continue in effect thereafter subject to the terms thereof and of
this Plan.

     15.  INFORMATION. To the extent required by applicable state securities
law, Participants who hold shares of the Optioned Stock shall receive annual
financial statements of the Company. This provision shall not apply to
Participants whose duties in connection with the Company assure them access to
equivalent information.

                                       12

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00018-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00018-of-00352.parquet"}]]