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EXHIBIT 10.7                                CONFIDENTIAL TREATMENT
                                   GENOMETRIX INCORPORATED HAS REQUESTED
                                   THAT THE MARKED PORTIONS OF THIS DOCUMENT
                                   BE ACCORDED CONFIDENTIAL TREATMENT PURSUANT
                                   TO RULE 406 UNDER THE SECURITIES ACT OF 1933,
                                   AS AMENDED.

                          LICENSE AND OPTION AGREEMENT

         THIS LICENSE AND OPTION AGREEMENT (the "Agreement") is dated as of the
28th day of December, 1998 (the "Effective Date"), by and between MOTOROLA,
INC., a Delaware corporation having an office at 4088 Commercial Drive,
Northbrook, Illinois 60062 (hereinafter, together with its SUBSIDIARIES,
"MOTOROLA"), and GENOMETRIX INCORPORATED, a Delaware corporation having its
offices at 3608 Research Forest Drive, Suite B7, The Woodlands, Texas 77381
("GENOMETRIX").

         WHEREAS, GENOMETRIX owns, controls or has acquired rights under various
patents and applications for patents pending, in various countries of the world,
referred to herein as the E-FIELD MANIPULATION IP, SURFACE CHEMISTRIES IP, and
UNIVERSAL ARRAY IP (each as defined below); and

         WHEREAS, MOTOROLA and GENOMETRIX have agreed to an equity arrangement
as set forth in the STOCK PURCHASE AGREEMENT (as defined below) executed
concurrently with this Agreement; and

         WHEREAS, GENOMETRIX is willing to grant MOTOROLA, and MOTOROLA desires
to acquire from GENOMETRIX, the licenses and license options as provided herein.

         NOW, THEREFORE, the parties agree as follows:

SECTION 1.                 DEFINITIONS

         Capitalized terms used herein shall have the definitions assigned to
them in this Section 1, and shall include the singular as well as the plural.

         1.1 E-FIELD MANIPULATION IP means GENOMETRIX INTELLECTUAL PROPERTY used
for the research, development, manufacture or use of COMPLEMENTARY PRODUCTS and
pertaining to the use of an electric field property, including electrical
properties and electrochemical properties, to: (a) identify molecular structures
within a sample substance applied to one or more test sites, (b) accelerate or
enhance the rate at which interaction mechanisms, such as hybridization, occur
between molecules at one or more test sites, and (c) increase the specificity
and/or selectivity of the interaction between two or more molecular structures.
E-FIELD MANIPULATION IP shall exclude: (x) the use of an electric field property
to synthesize and/or deposit molecular structures onto an array to form test
sites, and (y) optical, radioisotope, chemiluminescent and thermal detection
methods and technology. By way

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of example, EXHIBIT D hereof sets forth representative claims of certain
existing GENOMETRIX PATENTS which meet the criteria for E-FIELD MANIPULATION IP.

         1.2 SURFACE CHEMISTRIES IP means GENOMETRIX INTELLECTUAL PROPERTY used
for the research, development, manufacture or use of COMPLEMENTARY PRODUCTS and
pertaining to the use of specific molecular structures to alter the ionic and/or
hydrophobic properties of an array site to: (a) accelerate the rate at which
molecular interactions occur at the site, (b) increase the specificity and/or
selectivity of the interaction between molecular structures at the site, (c)
enable molecular interactions to occur with adequate or enhanced specificity at
non-elevated temperatures, including ambient or room temperature, and (d) enable
molecular interactions to occur at minimized salt concentrations, but excluding
combinatorial chemistry approaches and associated hybridization devices to
develop and/or evaluate alternative chemistries. By way of example, EXHIBIT D
hereof sets forth representative claims of certain existing GENOMETRIX PATENTS
which meet the criteria for SURFACE CHEMISTRIES IP.

         1.3 UNIVERSAL ARRAY IP means GENOMETRIX INTELLECTUAL PROPERTY used for
the research, development, manufacture or use of COMPLEMENTARY PRODUCTS
pertaining to the creation and construction of self-assembling probe arrays
enabling in situ configuration of the biosites, wherein an unvarying probe array
(capture probe) is activated by binding to a corresponding set of adapters
(target probes) to yield a modified probe array which is specifically configured
for analysis of a target molecular structure or mixture thereof. UNIVERSAL ARRAY
IP shall include intellectual property relating to: (a) the methodology of
constructing such universal arrays, (b) the reaction substrate which defines
such universal arrays, (c) sets of nucleic acid capture probes defined to
achieve the formation of a such universal arrays, and shall exclude: (x)
manufacturing methods and apparatus, (y) the application of any such universal
array where the capture probe is a hapten or a hapten-binding polypeptide, and
(z) the application and manufacturing of any such universal array where the
capture probe is avidin, the capture specific domain is biotin, and the target
specific domain is an oligonucleotide. By way of example, EXHIBIT D hereof sets
forth representative claims of certain existing GENOMETRIX PATENTS which meet
the criteria for UNIVERSAL ARRAY IP.

         1.4 GENOMETRIX INTELLECTUAL PROPERTY means GENOMETRIX PATENTS and
unpatented information relating to the research, development, manufacture or use
of COMPLEMENTARY PRODUCTS and disclosed to MOTOROLA pursuant to Section 2.1
hereof.

                  1.5 GENOMETRIX PATENTS means (i) the patents and patent
applications set forth on EXHIBIT A hereof, together with divisions,
continuations, continuations-in-part, reissues and foreign counterparts thereof;
and (ii) patents and patent applications claiming inventions or discoveries
conceived and reduced to practice by GENOMETRIX prior to the third anniversary
of the Effective Date and which meet the criteria for E-FIELD MANIPULATION IP,
SURFACE CHEMISTRIES IP or UNIVERSAL ARRAY IP. The foregoing notwithstanding, the
term GENOMETRIX PATENTS includes only such patents and patent applications which
are owned, licensed to or otherwise controlled by GENOMETRIX and with respect to
which

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                                            CONFIDENTIAL MATERIAL OMITTED AND
                                            FILED SEPARATELY WITH THE SECURITIES
                                            AND EXCHANGE COMMISSION. ASTERISKS
                                            DENOTE SUCH OMISSIONS.

GENOMETRIX has the right to grant the licenses set forth herein and provided,
further, GENOMETRIX PATENTS shall include such patents or patent applications
only to the extent to which and subject to the conditions under which GENOMETRIX
has the right to grant licenses or rights of the scope granted herein.

                  1.6 complementary PRODUCTS means (a) products and services
based on arrays of size ***************************** , (b) products and
services based on arrays of ******** for use in ***** ** **** *********** *****
******** ***********, and (c) such additional products and services based on
arrays of ******* as MOTOROLA and GENOMETRIX may mutually agree from time to
time.

                  1.7 E-FIELD PRODUCTS means COMPLEMENTARY PRODUCTS (or a
portion thereof) which (a) are covered in whole or in part by, or the use
thereof is covered in whole or in party by, the E-FIELD MANIPULATION IP; or (b)
are manufactured through use of a process which is covered in whole or in part
by the E-FIELD MANIPULATION IP.

                  1.8 SURFACE CHEMISTRY PRODUCTS means COMPLEMENTARY PRODUCTS
which (a) are covered in whole or in part by, or the use thereof is covered in
whole or in part by, the SURFACE CHEMISTRIES IP or (b) are manufactured through
use of a process which is covered, in whole or in part, the SURFACE CHEMISTRIES
IP.

                  1.9 UNIVERSAL ARRAY PRODUCTS means COMPLEMENTARY PRODUCTS
which (a) are covered in whole or in part by, or the use thereof is covered in
whole or in part by, the UNIVERSAL ARRAY IP or (b) are manufactured through use
of a process which is covered, in whole or in part, by the UNIVERSAL ARRAY IP.

                  1.10 LICENSED PRODUCTS means the E-FIELD PRODUCTS, the SURFACE
CHEMISTRY PRODUCTS and the UNIVERSAL ARRAY PRODUCTS.

                  1.11 NET SALES means MOTOROLA's billings for LICENSED PRODUCTS
sold, leased or transferred hereunder, less the sum of the following:

          (a)     discounts allowed in amounts customary in the trade;

          (b)     sales, tariff duties and/or use taxes directly imposed and
                  with reference to particular sales;

          (c)     packing and crating charges separately stated;

          (d)     outbound transportation prepaid or allowed; and

          (e)     amounts allowed or credited on returns.

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         No deductions shall be made for commissions paid to individuals whether
they be with independent sales agencies or regularly employed by MOTOROLA and on
its payroll, or for cost of collections. LICENSED PRODUCTS shall be considered
"sold" when billed out or invoiced. For LICENSED PRODUCTS disposed of other than
by sale, the NET SALES of such LICENSED PRODUCTS shall be determined based on
the fair market value of such LICENSED PRODUCTS. In the event that a LICENSED
PRODUCT is sold, leased, disposed of or otherwise transferred between MOTOROLA
and an entity affiliated with MOTOROLA in a transaction which results in revenue
to MOTOROLA, the NET SALES of LICENSED PRODUCTS with respect to such transfer
shall be calculated based on the price at which similar quantities of such
LICENSED PRODUCT would have been sold to an independent third party in an
arms-length transaction as of the date of such transfer.

         In the event that a LICENSED PRODUCT is sold in combination with one or
more other integral components not by itself a LICENSED PRODUCT, and such other
integral components are not sold separately, the parties shall arrive at a
reasonable method of calculating NET SALES with respect to such LICENSED
PRODUCT, based on the relative fair market value of such LICENSED PRODUCT as
compared with the fair market value of such other integral components, and
pursuant to the procedures set forth in this paragraph. For the purposes of such
NET SALES determination, representative integral components may include: DNA
sequences, reagents, micro fluidics and liquid handling systems, and data
acquisition, manipulation and display systems. In addition, royalties paid to
third parties shall be a consideration in determining fair market value. Unless
otherwise agreed by the parties, the NET SALES of a particular LICENSED PRODUCT
that is sold in combination with one or more other integral components not by
itself a LICENSED PRODUCT, shall be determined as follows: a mutually agreeable
third party with experience in the relevant technology shall be selected by the
American Arbitration Association to determine the method of calculating the NET
SALES (the "Representative"). Each party shall present the Representative with a
detailed written position and have an opportunity for an oral presentation. The
decision of the Representative shall be final, binding and not appealable, and
such proceeding shall be completed within sixty (60) days of the selection of
the Representative. Each of GENOMETRIX and MOTOROLA shall bear its own costs in
connection with such NET SALES determination, and each shall pay one-half of the
fees of the Representative. Notwithstanding the foregoing, the parties agree
that the determination of NET SALES of LICENSED PRODUCTS pursuant to this
Section 1.11 is subject to the MIT AGREEMENT, provided, however that GENOMETRIX
agrees to use reasonable best efforts to obtain MIT's approval of the methods
utilized by the parties pursuant to this Section 1.11 for determining such NET
SALES.

         1.12 EFFECTIVE DATE means the date of this Agreement as set forth
above.

         1.13 LICENSE OPTION PERIOD means the period commencing on the EFFECTIVE
DATE and continuing until three (3) years after the EFFECTIVE DATE.

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                                            CONFIDENTIAL MATERIAL OMITTED AND
                                            FILED SEPARATELY WITH THE SECURITIES
                                            AND EXCHANGE COMMISSION. ASTERISKS
                                            DENOTE SUCH OMISSIONS.

         1.14 OPTION EXERCISE FEE means a fee of **************, payable by
MOTOROLA to GENOMETRIX immediately prior to the granting of a license under
Section 3.2, 3.3 or 3.4 hereof, and *********** of which shall be credited
toward royalties to be paid by MOTOROLA to GENOMETRIX with respect to applicable
LICENSED PRODUCTS. By way of example but not limitation, ************* of the
OPTION EXERCISE FEE for the E-FIELD MANIPULATION IP shall be creditable towards
royalties to be paid by MOTOROLA to GENOMETRIX with respect to E-FIELD PRODUCTS,
but shall not be creditable towards royalties to be paid by MOTOROLA to
GENOMETRIX with respect to SURFACE CHEMISTRY PRODUCTS or UNIVERSAL ARRAY
PRODUCTS.

         1.15 SUBSIDIARY means a corporation, company, or other entity more than
forty-eight percent (48%) of whose outstanding shares or securities
(representing the right to vote for the election of directors or other managing
authority) are, now or hereafter, owned or controlled, directly or indirectly by
a party hereto, but such corporation, company, or other entity shall be deemed
to be a SUBSIDIARY only so long as such ownership or control exists. Unless
otherwise specified, the term MOTOROLA includes its SUBSIDIARIES.

         1.16 STOCK PURCHASE AGREEMENT means the Stock Purchase Agreement dated
as of the date hereof by and between GENOMETRIX and MOTOROLA.

         1.17 COLLABORATION AGREEMENT means that certain Collaboration Agreement
among MIT, GENOMETRIX and certain others, dated May 28, 1993 and amended
November 5, 1993, and as subsequently amended from time-to-time.

         1.18 BAYLOR means the Baylor College of Medicine.

         1.19 BAYLOR AGREEMENT means that certain agreement entered into by and
between GENOMETRIX and BAYLOR and having an effective date of May 31, 1998, and
as amended from time-to-time. A true and accurate copy of the BAYLOR AGREEMENT
is attached hereto as EXHIBIT C.

         1.20 MIT means the Massachusetts Institute of Technology.

         1.21 MIT AGREEMENT means that certain agreement entered into by and
between GENOMETRIX and MIT and having an effective date of May 27, 1994, as
amended April 1, 1996 (the 5722L technology only), and as subsequently amended
from time-to-time. A true and accurate copy of the MIT AGREEMENT is attached
hereto as EXHIBIT B.

         1.22 HARC means the Houston Advanced Research Center.

         1.23 VALID PATENT CLAIM shall mean (i) a claim of an issued patent that
has not been declared invalid by a court or administrative proceeding from which
there is no appeal; and

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                                            DENOTE SUCH OMISSIONS.

(ii) a pending claim asserted in good faith and with respect to which GENOMETRIX
has an obligation to pay a royalty to MIT pursuant to the MIT AGREEMENT.

SECTION 2.                 INFORMATION UPDATES; COOPERATION

         2.1 From time to time during the term of this Agreement and prior to
the third anniversary of the Effective Date, but not more than once in any three
(3) month period, a person or persons designated by GENOMETRIX will confer with
a person or persons designated by MOTOROLA, at a mutually acceptable date and
time during normal business hours, to (a) discuss the intellectual property
included in the GENOMETRIX PATENTS, and (b) provide MOTOROLA with information
GENOMETRIX reasonably believes to be relevant to MOTOROLA's decision to exercise
its option to obtain a license under Section 3.2, 3.3 or 3.4 hereof.

         2.2 The parties hereto may pursue additional joint evaluation, research
and other activities as mutually agreed from time to time, including, without
limitation, services provided by GENOMETRIX, licenses under a party's
intellectual property in addition to the licenses granted to MOTOROLA hereunder,
and additional investments in GENOMETRIX by MOTOROLA. The parties also agree to
discuss in good faith from time to time the potential for MOTOROLA to distribute
certain GENOMETRIX products, when mutually agreed and where consistent with the
parties' respective business models.

SECTION 3.                 LICENSES

         3.1 GENOMETRIX hereby grants to MOTOROLA a ************** , worldwide
license, without the right to grant sublicenses, under the E-FIELD MANIPULATION
IP, the SURFACE CHEMISTRIES IP and the UNIVERSAL ARRAY IP, to use the E-FIELD
MANIPULATION IP, the SURFACE CHEMISTRIES IP and the UNIVERSAL ARRAY IP, for
internal evaluation and research purposes relating to the development of
LICENSED PRODUCTS (but not to sell or otherwise commercially dispose of LICENSED
PRODUCTS).

         3.2 At any time during the LICENSE OPTION PERIOD and upon written
notification by MOTOROLA to GENOMETRIX and the payment by MOTOROLA of one OPTION
EXERCISE FEE, GENOMETRIX shall grant to MOTOROLA a non-exclusive,
royalty-bearing, worldwide license under the E-FIELD MANIPULATION IP, to make,
have made, use, sell and import E-FIELD PRODUCTS.

         3.3 At any time during the LICENSE OPTION PERIOD and upon written
notification by MOTOROLA to GENOMETRIX and the payment by MOTOROLA of one OPTION
EXERCISE FEE, GENOMETRIX shall grant to MOTOROLA a royalty-bearing,

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                                            AND EXCHANGE COMMISSION. ASTERISKS
                                            DENOTE SUCH OMISSIONS.

worldwide license under the SURFACE CHEMISTRIES IP to make, have made, use, sell
and import SURFACE CHEMISTRY PRODUCTS.

         3.4 At any time during the LICENSE OPTION PERIOD and upon written
notification by MOTOROLA to GENOMETRIX and the payment by MOTOROLA of one OPTION
EXERCISE FEE, GENOMETRIX shall grant to MOTOROLA a non-exclusive,
royalty-bearing, worldwide license, under the UNIVERSAL ARRAY IP, to make, have
made, use, sell and import UNIVERSAL ARRAY PRODUCTS.

         3.5 Notwithstanding any other provision of this Agreement to the
contrary, the licenses granted to MOTOROLA pursuant to Sections 3.2, 3.3 and 3.4
hereof shall include the right of MOTOROLA to grant sublicenses to third parties
only to the extent necessary to enable MOTOROLA to contract with such third
party for the manufacture of LICENSED PRODUCTS solely for MOTOROLA's account and
not for sale or other commercial disposition by such third party provided that
such third party shall agree in writing to obligations of confidentiality and
restrictions on use of the GENOMETRIX INTELLECTUAL PROPERTY which are no less
stringent than the restrictions set forth herein.

         3.6 Notwithstanding any provision to the contrary contained in this
Agreement, the licenses and options granted to MOTOROLA hereunder shall not
include the field of use ***************************************.

         3.7 The licenses and options granted to MOTOROLA hereunder shall be
subject to the provisions of the MIT AGREEMENT and the BAYLOR AGREEMENT to the
extent set forth in such agreements, and MOTOROLA shall be bound by certain
obligations (but in all cases excluding payment obligations) to MIT and to
BAYLOR, respectively, as if it were the licensee under such agreements as set
forth in such agreements. Copies of the MIT AGREEMENT and the BAYLOR AGREEMENT
are attached to this Agreement as EXHIBIT B and EXHIBIT C, respectively. Copies
of this Agreement shall be provided by GENOMETRIX to MIT and BAYLOR.

         3.8 MOTOROLA hereby acknowledges that GENOMETRIX has licensed certain
of the GENOMETRIX PATENTS from third parties, including without limitation MIT
and BAYLOR, and the rights thereto granted to MOTOROLA hereunder may be subject
to compliance with and provisions of the terms of such license agreements,
including the right of such third parties to practice under the GENOMETRIX
PATENTS for non-commercial research and academic purposes, as further provided
in GENOMETRIX's agreements with such third parties. If for any reason GENOMETRIX
is in default or has failed to comply with the terms of any agreement with third
parties concerning the GENOMETRIX PATENTS, then in such event GENOMETRIX shall
promptly give notice of such default, termination, repudiation or cancellation
to MOTOROLA who shall have the option but not the obligation to take such steps
and make such payments as may be required in order to rectify the default and to
bring the agreements pursuant to which MOTOROLA holds the GENOMETRIX PATENTS
into good

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                                            DENOTE SUCH OMISSIONS.

standing, provided that any monies expended by MOTOROLA in so doing shall be
fully creditable against any royalties or other monies due and owing to
GENOMETRIX hereunder.

         3.9 GENOMETRIX hereby grants MOTOROLA ************ negotiate a license
under intellectual property (other than the GENOMETRIX PATENTS licensed to
MOTOROLA pursuant to this Agreement) owned or controlled by GENOMETRIX and which
GENOMETRIX may choose, from time-to-time, to make available to third parties on
a non-exclusive basis. In all such cases, the licensing terms offered to
MOTOROLA shall be no less favorable than those offered to such third party
non-exclusive licensees, taking into account any development funding and other
consideration received from such third party licensees.

         3.10 MOTOROLA hereby grants GENOMETRIX ************* negotiate a
license under any intellectual property related to or useful for the practice of
the GENOMETRIX PATENTS, owned or controlled by MOTOROLA and that MOTOROLA
chooses to make available from time to time to third parties on a non-exclusive
basis. In all such cases, the licensing terms offered to GENOMETRIX shall be no
less favorable than those offered to such third party licensees, taking into
account any development funding and other consideration received from such third
party licensees.

         3.11 Notwithstanding any other provision of this Agreement, nothing
herein shall be construed as granting or requiring either party to grant any
license or rights under its intellectual property to any party outside this
Agreement.

         3.12 MOTOROLA agrees that any LICENSED PRODUCT produced for sale in the
United States will be manufactured substantially in the United States, unless
any waiver of such requirement is obtained.

         3.13 All rights reserved to the United States Government and others
under Public Law 96-517 and 98-620 shall remain and shall in no way be affected
by this Agreement.

SECTION 4.                 RIGHTS TO FILE AND ENFORCE THE GENOMETRIX PATENTS

         4.1 GENOMETRIX shall have responsibility, alone or in conjunction with
its licensors, for the preparation, filing, prosecution, maintenance and
enforcement of any and all patent applications and patents comprising the
GENOMETRIX PATENTS. GENOMETRIX shall promptly inform MOTOROLA regarding all
matters directly pertaining to the prosecution, maintenance or enforcement of
the GENOMETRIX PATENTS to the extent such matters specifically relate to
LICENSED PRODUCTS with respect to which MOTOROLA has paid the OPTION EXERCISE
FEE, and, to the extent permissible by its agreements with licensors of the
applicable patent or patent application, shall seek MOTOROLA's counsel
concerning all proposed courses of action affecting the scope of such GENOMETRIX
PATENTS, including, but not limited to, the countries in which patent
prosecution should be obtained and

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                                            AND EXCHANGE COMMISSION. ASTERISKS
                                            DENOTE SUCH OMISSIONS.

MOTOROLA shall be provided with a reasonable opportunity to comment on any
document that GENOMETRIX intends to file or cause to be filed with the relevant
intellectual property or patent office relating directly to any such GENOMETRIX
PATENTS.

         4.2 If, during the prosecution of any patent application covering any
GENOMETRIX PATENT under which MOTOROLA has obtained a license by payment of the
corresponding OPTION EXERCISE FEE, GENOMETRIX decides or is advised of a
decision to discontinue prosecution of the application or maintenance of such
patent, GENOMETRIX shall promptly advise MOTOROLA of the decision and, if so
requested by MOTOROLA, shall, only to the extent permitted under GENOMETRIX's
agreements with third parties, continue such prosecution or maintenance,
provided that MOTOROLA shall bear the costs associated with such continued
prosecution or maintenance.

         4.3 If GENOMETRIX or MOTOROLA learn of the infringement or threatened
infringement of any GENOMETRIX PATENT, such party will inform the other party
(GENOMETRIX or MOTOROLA, as the case may be) in writing within thirty (30) days
and provide all known evidence of the infringement.

         4.4 MOTOROLA may request in writing that GENOMETRIX take legal action
against infringement or potential infringement of a GENOMETRIX PATENT under
which MOTOROLA has obtained a license by payment of the corresponding OPTION
EXERCISE FEE, upon which GENOMETRIX and MOTOROLA shall confer to determine in
good faith an appropriate course of action to enforce the GENOMETRIX PATENT, or
otherwise abate the infringement thereof, provided that, such course of action
shall be permissible under the applicable agreements between GENOMETRIX and the
licensors of the applicable GENOMETRIX PATENT.

         4.5 Each party will cooperate with the other in litigation proceedings
against any third party brought under this Agreement, except that either party
may be represented, at its sole expense, by counsel of its choice in any suit
brought by the other party.

SECTION 5.        PAYMENTS AND REPORTS

         5.1 In consideration for the rights and licenses granted in Section 3
hereof, MOTOROLA shall pay GENOMETRIX a single royalty ** ** ** ** ** NET SALES
of LICENSED PRODUCTS covered by a VALID PATENT CLAIM, except as otherwise
provided in Section 5.2 below, or unless the parties hereto shall otherwise
agree in writing, provided that such royalty shall be fully paid-up, and no
further royalty shall be due, (a) for any calendar year for which the total
royalty payments by MOTOROLA under this Section 5.1 equals ************ , or (b)
if the total royalties paid to GENOMETRIX by MOTOROLA under this Section 5.1
have reached *******************. The foregoing notwithstanding, if MOTOROLA's
royalties are fully paid up pursuant to subsection (a) or (b) hereof, and if

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                                            DENOTE SUCH OMISSIONS.

GENOMETRIX continues to have an obligation to pay royalties to MIT pursuant to
the MIT AGREEMENT as a result of the sale, lease transfer or other disposal of
LICENSED PRODUCTS by MOTOROLA pursuant to this Agreement, MOTOROLA shall pay
GENOMETRIX a royalty equal to the royalty which is owed MIT by GENOMETRIX,
provided that GENOMETRIX agrees to use reasonable best efforts to obtain from
MIT a waiver of the payment of such additional royalties; and provided, further,
that the term "reasonable best efforts" shall not be interpreted to require
GENOMETRIX to pay additional consideration to MIT in order to secure such a
waiver.

         5.2 If one or more claims of a GENOMETRIX PATENT issues and covers a
LICENSED PRODUCT under which MOTOROLA is not paying royalties to GENOMETRIX
pursuant to this Agreement as of such issue date, then, in addition to the
royalties payable by MOTOROLA pursuant to Section 5.1 above, MOTOROLA shall pay
to GENOMETRIX a royalty of up to ********** of the NET SALES of the LICENSED
PRODUCTS covered by such GENOMETRIX PATENT for the period of time commencing on
the date of first sale of the applicable LICENSED PRODUCT until the issue date
of the applicable GENOMETRIX PATENT if: (a) such period does not exceed two (2)
years, and (b) full disclosure of the applicable GENOMETRIX PATENT was made to
MOTOROLA prior to the introduction of such LICENSED PRODUCT into the commercial
marketplace; and (c) no commercial product was available during the applicable
period which product was covered by the same intellectual property without
license from GENOMETRIX, except for products made available by a third party to
whom GENOMETRIX has provided written notice that such product infringes the
GENOMETRIX PATENTS.

         5.3 The equivalent terms of the licensing agreement between MOTOROLA
and GENOMETRIX shall in no case be less favorable than future licensing
agreements which GENOMETRIX may enter into with other third parties, taking into
account any development funding and other consideration received from such third
party licensees.

         5.4 No multiple royalties shall be payable because any LICENSED
PRODUCT, its manufacture, use, lease, sale or import are or shall be covered by
more than one GENOMETRIX PATENT licensed under this Agreement. All payments
hereunder shall be paid in full, without deduction of taxes or other fees which
may be imposed by any government and which shall be paid by MOTOROLA.

         5.5 Within thirty (30) days of the close of each calendar quarter
following the exercise by MOTOROLA of its option to obtain a license pursuant to
Section 3.2, 3.3 or 3.4 hereof, MOTOROLA shall (i) deliver to GENOMETRIX a
report setting forth all LICENSED PRODUCTS sold, leased or otherwise transferred
or disposed of by MOTOROLA during such calendar quarter, which report shall
indicate the NET SALES thereof and the amount of royalties due, including a list
of all deductions therefrom, or such report shall certify that no LICENSED
PRODUCTS were sold or otherwise disposed of, and (ii) to the extent royalties
are due, MOTOROLA shall make such royalty payments to GENOMETRIX in accordance
with this

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Section 5. In the case of E-FIELD PRODUCTS, the reports submitted by MOTOROLA to
GENOMETRIX shall contain the information and be in the form required of
GENOMETRIX pursuant to Article 5 of the MIT AGREEMENT.

         5.6 Payments of royalties by MOTOROLA shall be made in United States
currency and by wire transfer to such account as GENOMETRIX may specify in
writing from time to time or by check mailed to GENOMETRIX at the address in
Section 10.11. In the event of a wire transfer, notice of payment shall be sent
by MOTOROLA to GENOMETRIX's address in Section 10.11. Conversion of foreign
currency to United States currency shall be made at the exchange rate prevailing
at the Chase Manhattan Bank (N.A.) on the last business day of the quarterly
reporting period to which such royalty payments relate, unless otherwise agreed
by GENOMETRIX and MOTOROLA.

         5.7 Any payment hereunder which shall be delayed beyond the due date
shall be subject to an interest charge at a per annum rate equal to the greater
of: (i) the prime rate in effect at the Chase Manhattan Bank (N.A.) on the due
date, or (ii) the rate which GENOMETRIX is required to pay to a third party
licensor; but in any event no greater than the highest rate allowed by law on
the due date. The payment of such interest shall not foreclose GENOMETRIX from
exercising any other rights it may have as a consequence of the lateness of any
payment.

         5.8 With respect to the royalties set forth in Section 5.1, MOTOROLA
shall keep clear and accurate records with respect to all LICENSED PRODUCTS sold
or otherwise disposed of by MOTOROLA, provided that, in the case of E-FIELD
PRODUCTS, such records shall meet the requirements imposed on GENOMETRIX by MIT
pursuant to Article 5 of the MIT AGREEMENT. These records shall be retained by
MOTOROLA for a period of five (5) years from date of reporting and payment,
notwithstanding the expiration or other termination of this Agreement.
GENOMETRIX shall have the right, through an independent certified public
accountant chosen by GENOMETRIX and reasonably acceptable to MOTOROLA, and at
the expense of GENOMETRIX, to examine and audit, not more than once a year, and
during normal business hours, all such records and such other records and
accounts as may, under recognized accounting practices, contain information
bearing upon the amount of royalties payable to GENOMETRIX under this Agreement.
Prompt adjustment shall be made by MOTOROLA to compensate for any errors and/or
omissions disclosed by such examination or audit. Should the amount of royalties
due as determined through the audit exceed the amount of royalties reported to
be due by MOTOROLA ************ , whichever is greater, then MOTOROLA shall pay
the full cost of the audit.

         5.9 For a period ********** from the Effective Date, GENOMETRIX hereby
grants MOTOROLA an exclusive first right of negotiation to obtain an exclusive,
worldwide, royalty-bearing license under the E-FIELD MANIPULATION IP, to make,
use, sell and import LICENSED PRODUCTS. The terms of such exclusive license
shall be negotiated in good faith and mutually agreed by the parties. During
such **************** , GENOMETRIX agrees

                                       11
<PAGE>   12

                                            CONFIDENTIAL MATERIAL OMITTED AND
                                            FILED SEPARATELY WITH THE SECURITIES
                                            AND EXCHANGE COMMISSION. ASTERISKS
                                            DENOTE SUCH OMISSIONS.

not to enter into discussions with any third party regarding the granting of
rights or licenses to such third party under the E-FIELD MANIPULATION IP.

SECTION 6.                 TERM, TERMINATION AND ASSIGNABILITY

         6.1 The term of this Agreement shall be from the EFFECTIVE DATE until
expiration of the last patent or disallowance of the last GENOMETRIX PATENT
under which MOTOROLA has obtained a license by payment of the corresponding
OPTION EXERCISE FEE, unless earlier terminated as elsewhere provided in this
Agreement.

         6.2 In the event of any material breach of this Agreement by either
party hereto, if such breach is not corrected within thirty (30) days after
written notice to the breaching party in the case of a breach in the payment of
royalties under Section 5.1, or within forty-five (45) days after written notice
to the breaching party for all other breaches, the non-breaching party may, at
its option terminate this Agreement.

         6.3 The parties hereto acknowledge and agree that (a) In the event of
the termination of the MIT AGREEMENT, this Agreement shall not terminate and
MOTOROLA shall become a licensee of MIT as set forth in Section 13.6 of the MIT
AGREEMENT, and (b) in the event of the termination of the BAYLOR AGREEMENT, the
rights and obligations of MOTOROLA hereunder with respect to SURFACE CHEMISTRIES
IP and SURFACE CHEMISTRY PRODUCTS specific to the BAYLOR AGREEMENT shall be
terminated, provided that GENOMETRIX shall have no objection if MOTOROLA enters
into good faith discussions with BAYLOR in order to continue its rights and
obligations under the SURFACE CHEMISTRIES IP originally licensed to GENOMETRIX
pursuant to the BAYLOR AGREEMENT.

         6.4 The rights or privileges provided for in this Agreement may be
assigned or transferred by either party only with the prior written consent of
the other party, except that either party may assign its rights under this
Agreement to a successor in ownership of all or substantially all of its assets
relating to the subject matter of this Agreement.

         6.5 Sections 5.5, 5.6, 5.7 and 5.8, this Section 6.5, and Sections 7, 9
and 10 shall survive the expiration or termination of this Agreement.

SECTION 7.        PRODUCT LIABILITY, INSURANCE AND INDEMNIFICATION

         7.1      E-FIELD MANIPULATION IP.

                  (a) In the case of E-FIELD MANIPULATION IP and E-FIELD
         PRODUCTS, MOTOROLA shall at all times during the term of this Agreement
         and thereafter,

                                       12
<PAGE>   13

                                            CONFIDENTIAL MATERIAL OMITTED AND
                                            FILED SEPARATELY WITH THE SECURITIES
                                            AND EXCHANGE COMMISSION. ASTERISKS
                                            DENOTE SUCH OMISSIONS.

         indemnify, defend and hold GENOMETRIX, MIT, HARC, and BAYLOR, their
         trustees, directors, officers, employees and affiliates, harmless
         against all claims, proceedings, demands and liabilities of any kind
         whatsoever, including legal expenses and reasonable attorneys' fees,
         arising out of the death of or injury to any person or persons or out
         of any damage to property, resulting from the production, manufacture,
         sale, use, lease, consumption or advertisement of an E-FIELD PRODUCT(s)
         by MOTOROLA.

                  (b) Prior to the first use of an E-FIELD PRODUCT for a
         commercial application involving human subjects, MOTOROLA shall obtain
         and carry in full force and effect commercial, general liability
         insurance which shall protect GENOMETRIX, MOTOROLA, MIT, HARC, and
         BAYLOR with respect to events covered by Section 7.1(a) above. Such
         insurance shall be written by a reputable insurance company authorized
         to do business in The Commonwealth of Massachusetts, shall list
         GENOMETRIX., MIT, HARC, and BAYLOR as additional named insured
         thereunder, shall be endorsed to include product liability coverage and
         shall require thirty (30) days written notice to be given to MIT, HARC,
         and BAYLOR prior to any cancellation or material change thereof. The
         limits of such insurance shall not be less than ************ with an
         aggregate of *************** for personal injury or death, and
         ******************** per occurrence with an aggregate of
         *************** for property damage. MOTOROLA shall provide GENOMETRIX,
         MIT, HARC, and BAYLOR with Certificates of Insurance evidencing the
         same.

         7.2      SURFACE CHEMISTRIES IP.

                  (a) In the case of the SURFACE CHEMISTRIES IP and SURFACE
         CHEMISTRY PRODUCTS, each party shall notify the other of any claim,
         lawsuit or other proceeding related to the SURFACE CHEMISTRIES IP.
         MOTOROLA agrees that it will defend, indemnify and hold harmless
         GENOMETRIX, BAYLOR, MIT, HARC, and each of their respective faculty
         members, scientists, researchers, employees, officers, trustees,
         directors, and agents and each of them (the "Indemnified Parties"),
         from and against any and all claims, causes of action, lawsuits or
         other proceedings filed or otherwise instituted against any of the
         Indemnified Parties related directly or indirectly to or arising out of
         an act or omission of MOTOROLA in the design, manufacture, use or sale
         of a SURFACE CHEMISTRY PRODUCT, or any other embodiment of the SURFACE
         CHEMISTRIES IP.

                  (b) MOTOROLA shall, for so long as MOTOROLA manufactures, uses
         or sells any SURFACE CHEMISTRY PRODUCT maintain in full force and
         effect policies of (i) worker's compensation and/or employers'
         liability insurance within statutory limits and (ii) general liability
         insurance (with Broad Form General Liability endorsement) with limits
         of not less than ******************** per occurrence with an annual
         aggregate of ****************** and (iii) products liability insurance,
         with limits of not less than ****************** per occurrence with an
         annual aggregate of ****************.

                                       13
<PAGE>   14

                                            CONFIDENTIAL MATERIAL OMITTED AND
                                            FILED SEPARATELY WITH THE SECURITIES
                                            AND EXCHANGE COMMISSION. ASTERISKS
                                            DENOTE SUCH OMISSIONS.

         Such coverage(s) shall be purchased from a carrier or carriers
         reasonably acceptable to GENOMETRIX and BAYLOR, and shall name
         GENOMETRIX and BAYLOR as an additional insured. Upon request by
         GENOMETRIX, MOTOROLA shall provide to GENOMETRIX and/or BAYLOR copies
         of said policies of insurance.

         7.3      UNIVERSAL ARRAY IP.

                  (a) In the case of the UNIVERSAL ARRAY IP, each party shall
         notify the other of any claim, lawsuit or other proceeding related to
         the UNIVERSAL ARRAY IP. MOTOROLA agrees that it will defend, indemnify
         and hold harmless GENOMETRIX and its employees, officers, trustees,
         directors, and agents and each of them (the "Indemnified Parties"),
         from and against any and all claims, causes of action, lawsuits or
         other proceedings filed or otherwise instituted against any of the
         Indemnified Parties related directly or indirectly to or arising out of
         an act or omission of MOTOROLA in the design, manufacture, use or sale
         of the UNIVERSAL ARRAY PRODUCT, or any other embodiment of the
         UNIVERSAL ARRAY IP.

                  (b) MOTOROLA shall, for so long as MOTOROLA manufactures, uses
         or sells any UNIVERSAL ARRAY PRODUCT maintain in full force and effect
         policies of (i) worker's compensation and/or employers' liability
         insurance within statutory limits and (ii) general liability insurance
         (with Broad Form General Liability endorsement) with limits of not less
         than ************* per occurrence with an annual aggregate of
         ************* and (iii) products liability insurance, with limits of
         not less than ************* per occurrence with an annual aggregate of
         ************. Such coverage(s) shall be purchased from a carrier or
         carriers reasonably acceptable to GENOMETRIX, and shall name GENOMETRIX
         as an additional insured. Upon request by GENOMETRIX, MOTOROLA shall
         provide to GENOMETRIX with copies of said policies of insurance.

SECTION 8.                 WARRANTIES

         8.1 GENOMETRIX warrants that except as otherwise set forth herein and
in the Exhibits attached hereto, including without limitation the MIT AGREEMENT
and the BAYLOR

                                       14
<PAGE>   15

AGREEMENT, to the best of its knowledge it owns or has license rights to the
GENOMETRIX PATENTS, free and clear of all liens, encumbrances, and claims or
demands of third parties.

         8.2. Each party warrants that it has the authority to enter into this
Agreement.

         8.3. GENOMETRIX warrants that, to the best of its knowledge, EXHIBIT A
sets forth all patents or patent applications claiming E-FIELD MANIPULATION IP,
SURFACE CHEMISTRIES IP and UNIVERSAL ARRAY IP owned, controlled, or licensed by
GENOMETRIX as of the EFFECTIVE DATE. To the best of GENOMETRIX's knowledge, all
patents listed in EXHIBIT A are valid and in full force and all patent
applications listed therein as pending have been prosecuted in good faith as
required by law and are in good standing. To the best knowledge of GENOMETRIX,
none of the patents or patent applications listed in EXHIBIT A is involved in
any interference or opposition proceeding, and there has been no written notice
received by GENOMETRIX that such proceeding will hereafter be commenced

         8.4 EXCEPT AS OTHERWISE EXPRESSLY SET FORTH IN THIS AGREEMENT,
GENOMETRIX, ITS TRUSTEES, DIRECTORS, OFFICERS, EMPLOYEES AND AFFILIATES MAKE NO
REPRESENTATIONS AND EXTEND NO WARRANTIES OF ANY KIND, EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
PARTICULAR PURPOSE, VALIDITY OF THE GENOMETRIC PATENTS, CLAIMS, ISSUED OR
PENDING, AND THE ABSENCE OF LATENT OR OTHER DEFECTS, WHETHER OR NOT
DISCOVERABLE. NOTHING IN THIS AGREEMENT SHALL BE CONSTRUED AS A REPRESENTATION
MADE OR WARRANTY GIVEN BY GENOMETRIX THAT THE PRACTICE BY MOTOROLA OF THE
LICENSE GRANTED HEREUNDER SHALL NOT INFRINGE THE PATENT RIGHTS OF ANY THIRD
PARTY. EXCEPT AS EXPRESSLY STATED HEREIN, IN NO EVENT SHALL GENOMETRIX, ITS
TRUSTEES, DIRECTORS, OFFICERS, EMPLOYEES AND AFFILIATES BE LIABLE FOR INCIDENTAL
OR CONSEQUENTIAL DAMAGES OF ANY KIND, INCLUDING ECONOMIC DAMAGE OR INJURY TO
PROPERTY AND LOST PROFITS.

SECTION 9.                 CONFIDENTIALITY

         9.1 CONFIDENTIAL INFORMATION means any materials or information
provided by a party (the "Disclosing Party") to the other party (the "Receiving
Party"), regardless of whether such information is provided in written, oral,
electronic or other form, provided that CONFIDENTIAL INFORMATION shall not
include information or materials which:

         (a)      are in possession of the Receiving Party at the time of
                  disclosure thereof as demonstrated by prior written records;

         (b)      are or later become part of the public domain through no fault
                  of the Receiving Party;

                                       15
<PAGE>   16

         (c)      are received by the Receiving Party from a third party having
                  a lawful right to disclose same and having no obligation of
                  confidentiality to the Disclosing Party with respect thereto;

         (d)      are developed independently by the Receiving Party without use
                  of or access to the Confidential Information, as evidenced by
                  competent written records; or

         (e)      are required by law or regulation to be disclosed, provided,
                  however, that the Receiving Party has provided prompt, advance
                  written notice to the Disclosing Party so as to enable the
                  Disclosing Party to seek a protective order or otherwise
                  prevent disclosure of such Confidential Information.

         9.2 The Receiving Party agrees that the CONFIDENTIAL INFORMATION of the
Disclosing Party shall be maintained in strict confidence and shall not be
disclosed, divulged or otherwise communicated by the Receiving Party to any
third party or used by the Receiving Party or any third party for any purposes
other than as expressly provided in this Agreement.

         9.3 Neither party shall issue any press release or make any public
announcement relating to this Agreement without the prior written approval of
the other party.

SECTION 10.                MISCELLANEOUS PROVISIONS

         10.1 MOTOROLA shall at all times during the term of this Agreement and
for so long as it shall practice the GENOMETRIX PATENTS or develop, make, use or
sell LICENSED PRODUCTS, comply with all laws that may control the import,
export, manufacture, use, sale, marketing, distribution and other commercial
exploitation of LICENSED PRODUCTS or any other activity undertaken pursuant to
this Agreement.

         10.2 Nothing contained in this Agreement shall be construed as:

                  (a)      conferring any license or other right, by
                           implication, estoppel or otherwise, under any patent
                           application, patent or patent right, except as herein
                           expressly granted; or

                  (b)      conferring any license or right with respect to any
                           trademark, trade or brand name, a corporate name of
                           any party, or any other name or mark, or contraction,
                           abbreviation or simulation thereof.

         10.3 No express or implied waiver by either of the parties to this
Agreement of any breach of any term, condition or obligation of this Agreement
by the other party shall be construed as a waiver of any subsequent breach of
that term, condition or obligation or of any other term, condition or obligation
of this Agreement of the same or of a different nature.

                                       16
<PAGE>   17

         10.4 This Agreement is the result of negotiation between the parties
and, accordingly, shall not be construed for or against either party regardless
of which party drafted this Agreement or any portion thereof.

         10.5 Nothing in this Agreement shall be construed as creating a
partnership, joint venture, or other formal business organization of any kind.

         10.6 Except as expressly stated herein, in no event shall either party
be liable to the other party by reason of this Agreement or any breach or
termination of this Agreement for any loss of prospective profits or incidental
or special or consequential damages.

         10.7 The headings and captions used in this Agreement are for
convenience only, and are not to be used in interpreting the obligations of the
parties under this Agreement.

         10.8     GOVERNING LAW.

                  (a) To the extent required by the BAYLOR AGREEMENT, the
         performance of this Agreement as it relates to rights and licenses
         granted under the SURFACE CHEMISTRIES IP shall be subject to, made
         under, and shall be construed and interpreted in accordance with the
         laws of the State of Texas, and no conflict-of-laws rule or law that
         might refer such construction and interpretation to the laws of another
         state, republic, or country shall be considered. To the extent required
         by the BAYLOR AGREEMENT, this Agreement is performable in part in
         Harris County, Texas, and the parties mutually agree that, to the
         extent required by the BAYLOR AGREEMENT, personal jurisdiction and
         venue shall be proper in the state and federal courts situated in
         Harris County, Texas, and, to the extent required by the BAYLOR
         AGREEMENT, agree that any litigated dispute relating to the SURFACE
         CHEMISTRIES IP or SURFACE CHEMISTRY PRODUCTS will be conducted solely
         in such courts.

                  (b) To the extent required by the MIT AGREEMENT, this
         Agreement, as it relates to rights and licenses granted under the
         E-FIELD MANIPULATION IP, shall be construed, governed, interpreted and
         applied in accordance with the laws of the Commonwealth of
         Massachusetts, U.S.A., except that questions affecting the construction
         and effect of any patent shall be determined by the law of the country
         in which the patent was granted.

                  (c) In all cases not covered by Sections 10.8(a) and 10.8(b)
         above, the performance of this Agreement as it relates to rights and
         licenses granted to MOTOROLA shall be subject to, made under, and shall
         be construed and interpreted in accordance with the laws of the State
         of Delaware.

10.9          DISPUTE RESOLUTION.

                  (a) Disputes relating to the E-FIELD MANIPULATION IP and
         E-FIELD PRODUCTS shall be governed by the provisions of this Section
         10.9(a). Except for the

                                       17
<PAGE>   18

         right of either party to apply to a court of competent jurisdiction for
         a temporary restraining order, a preliminary injunction, or other
         equitable relief to preserve the status quo or prevent irreparable
         harm, any and all claims, disputes or controversies arising under, out
         of, or in connection with this Agreement, including any dispute
         relating to patent validity or infringement, which the parties shall be
         unable to resolve within sixty (60) days shall be mediated in good
         faith. The party raising such dispute shall promptly advise the other
         party of such claim, dispute or controversy in a writing which
         describes in reasonable detail the nature of such dispute. If the
         parties are unable to resolve such dispute within such sixty (60) day
         period, either party may demand mediation by written notice to the
         other party. By not later than ten (10) business days after the
         recipient has received such demand for mediation, each party shall have
         selected for itself a representative who shall have the authority to
         bind such party, and shall additionally have advised the other party in
         writing of the name and title of such representative. By not later than
         twenty (20) business days after the date of such demand for mediation,
         the party against whom the dispute shall be raised shall select a
         mediation firm in the Boston area which is acceptable to the other
         party (which acceptance shall not be unreasonably withheld) and such
         representatives shall schedule a date with such firm for a mediation
         hearing. Within thirty (30) days after the selection of the mediation
         firm, the parties shall enter into good faith mediation and shall share
         the costs equally. If the representatives of the parties have not been
         able to resolve the dispute within fifteen (15) business days after
         such mediation hearing, the parties shall have the right to pursue any
         other remedies legally available to resolve such dispute in either the
         courts of The Commonwealth of Massachusetts or in the United States
         District Court for the District of Massachusetts, to whose jurisdiction
         for such purposes GENOMETRIX and MOTOROLA each hereby irrevocably
         consents and submits. Notwithstanding the foregoing, nothing in this
         Section 10.9(a) shall be construed to waive any rights or timely
         performance of any obligations existing under this Agreement.

                  (b) Disputes arising out of this Agreement and not covered by
         Section 10.9(a) above shall be governed by this Section 10.9(b). The
         parties agree to attempt to settle all such disputes amicably between
         them. The parties agree that any such dispute (other than relating to
         the scope or validity of a patent and other than a dispute that is
         covered by Section 10.9(a) above, will be submitted to non-binding
         arbitration in a mutually agreeable location in accordance with the
         commercial rules and procedures of the American Arbitration
         Association, before a single arbitrator who will be reasonably familiar
         with the relevant industry. Each party shall pay its own costs in
         connection with such arbitration and one half of the fees of the
         arbitrator While the parties agree to attempt arbitration in good
         faith, nothing in this Section 10.9(b) shall be construed as limiting
         the rights of either party to take legal action as it deems necessary
         to enforce its rights under this Agreement.

         10.10 If any term, clause, or provision of this Agreement shall be
judged to be invalid, the validity of any other term, clause, or provision shall
not be affected; and such invalid term, clause, or provision shall be deemed
deleted from this Agreement.

                                       18
<PAGE>   19

         10.11 This Agreement, including the Exhibits attached hereto and
incorporated herein by reference, sets forth the entire agreement and
understanding between MOTOROLA and GENOMETRIX as to the subject matter hereof,
and supersedes and merges any and all prior discussions, correspondence,
agreements or understandings between the parties with respect to such matters,
including without limitation the Non-Disclosure Agreement by and between the
parties and dated June 2, 1998 and the Memorandum of Understanding dated
November 4, 1998. Neither party shall be bound by any conditions, definitions,
warranties, understandings or representations with respect to such subject
matter other than as expressly provided herein (including the Exhibits attached
hereto and incorporated herein by reference) or as duly set forth on or
subsequent to the date hereof in writing and signed by a proper and duly
authorized official of the party to be bound thereby.

         10.12 All notices required or permitted to be given hereunder shall be
in writing and shall be valid and sufficient if dispatched by registered mail,
postage prepaid, in any post office in the United States, or by recognized
courier service providing evidence of receipt, addressed as follows:

      If to MOTOROLA to:    Motorola, Inc.
                            1303 East Algonquin Road
                            Schaumberg, Illinois 60062
                            Attention:  Vice President for
                            Patents, Trademarks & Licensing

      If to GENOMETRIX to:  Genometrix Incorporated
                            3608 Research Forest Drive, Suite B7
                            The Woodlands, Texas 77381
                            Attention:  Mitchell D. Eggers, Ph.D.
                            Chief Executive Officer

         10.13 The date of receipt of such a notice shall be the date for the
commencement of the running of the period provided for in such notice, or the
date at which such notice takes effect, as the case may be.

         10.14 For the term of this Agreement, and for one (1) year after the
expiration or termination of this Agreement, MOTOROLA agrees not to solicit any
employees of GENOMETRIX without the prior written consent of GENOMETRIX, except
through advertisements and solicitations directed to the market generally.

                   REMAINDER OF PAGE INTENTIONALLY LEFT BLANK

                                       19
<PAGE>   20

         In witness whereof, each party hereto has caused this Agreement to be
executed by its duly authorized representatives:

MOTOROLA, INC.                                   GENOMETRIX INCORPORATED

By: /s/ Rudyard Istvan                           By: /s/ Mitchell D. Eggers
    --------------------------------------           ---------------------------
        Rudyard Istvan                                   Mitchell D. Eggers
Title:  Corporate Vice President                         Chief Executive Officer
        and Corporate Director of Strategy

By: /s/ Jonathan Meyer
    --------------------------------------
        Jonathan Meyer
Title:  Corporate Vice President,
        Assistant General Counsel, and
        Director of Patents, Trademarks
        and Licensing

                                       20
<PAGE>   21

                                    EXHIBIT A

                               GENOMETRIX PATENTS

1.       E-FIELD MANIPULATION IP.
         ------------------------

         U.S. 5,846,708
         Issued 12/18/98

         U.S. 5,653,939
         Issued 8/5/97

         U.S. 5,670,322
         Issued 9/23/97

         U.S. 5,532,128
         Issued 7/2/98

         USSN 08/511,649
         Filed 8/7/95

         USSN 07/872,582
         Filed 4/23/92

         USSN 07/794,036
         Filed 11/19/91

         USSN 08/353,957
         Filed 12/12/94

         USSN 08/457,096
         Filed 6/1/95

         USSN 08/633,861
         Filed 4/15/96

         WO 93/22678
         Filed 11/11/93

         PCT/US93/03829
         Filed 4/23/92

         EPC 92310253.7
         Filed 11/10/92

                                      A-1
<PAGE>   22

2.       SURFACE CHEMISTRIES IP.
         -----------------------

         USSN 08/749,967
         Filed 11/14/97

         USSN 60/006,697
         Filed 11/14/95

         PCT/US96/18,212
         Filed 11/14/96

         European 96938841.2
         Filed 11/14/96

         Canada 2235762
         11/14/96

         Japanese 09-519045
         Filed 11/14/96

3.       UNIVERSAL ARRAY IP.
         -------------------

         USSN 60/034627
         Filed 12/31/96

         USSN 09/002170
         Filed 12/31/97

         PCT/US97/24098
         Filed 12/31/97

                                      A-2
<PAGE>   23

                                    EXHIBIT B

                                  MIT AGREEMENT

                                       B-1
<PAGE>   24

                                    EXHIBIT C

                                BAYLOR AGREEMENT

                                      C-1
<PAGE>   25

                                    EXHIBIT D

                 REPRESENTATIVE CLAIMS OF THE GENOMETRIX PATENTS

                        EXISTING AS OF THE EFFECTIVE DATE

1.       REPRESENTATIVE CLAIMS OF THE GENOMETRIX PATENTS MEETING THE CRITERIA
         FOR E-FIELD MANIPULATION IP.

         (a)      Claims 1-10, 17-19, 14-15, 16 and 39 of United States Patent
                  Number 5,653,939;

         (b)      Claims 1-5, 10-12, 15-16, 19-33, and 42-43 of United States
                  Patent Number 5,846,708;

         (c)      All claims of United States Patent Number 5,670,322;

         (d)      All claims of United States Patent Number, 5,532,128; and

         (e)      Claim 70 of GENOMETRIX's United States patent application USSN
                  09/002,170.

2. REPRESENTATIVE CLAIMS OF THE GENOMETRIX PATENTS MEETING THE CRITERIA FOR
SURFACE CHEMISTRIES IP.

         Claims 1-21 of the GENOMETRIX PATENT licensed to GENOMETRIX from BAYLOR
         and having United States Patent Application Serial No. 08/749,967 and
         entitled "Integrated Nucleic Acid Hybridization Devices Based Upon
         Active Surface Chemistry."

3. REPRESENTATIVE CLAIMS OF THE GENOMETRIX PATENTS MEETING THE CRITERIA FOR
UNIVERSAL ARRAY IP.

         Claims 25-30, 33, 37-43, 44-63, 80-92 of the GENOMETRIX PATENT having
         United States Patent Application Serial No. 09/002,170, and entitled
         "Multiplexed Molecular Analysis Apparatus and Method."

                                      D-1<PAGE>   1
EXHIBIT 10.8                                     CONFIDENTIAL TREATMENT
                                            GENOMETRIX INCORPORATED HAS
                                            REQUESTED THAT THE MARKED PORTIONS
                                            OF THIS DOCUMENT BE ACCORDED
                                            CONFIDENTIAL TREATMENT PURSUANT TO
                                            RULE 406 UNDER THE SECURITIES ACT OF
                                            1933, AS AMENDED.

                         LICENSE AND RESEARCH AGREEMENT

         THIS LICENSE AND RESEARCH AGREEMENT (the "Agreement") is dated as of
the 6th day of July, 1999 (the "EFFECTIVE DATE"), by and between MOTOROLA, INC.,
a Delaware corporation having an office at 4088 Commercial Drive, Northbrook,
Illinois 60062 (hereinafter, together with its SUBSIDIARIES, "MOTOROLA"), and
GENOMETRIX INCORPORATED, a Delaware corporation having its offices at 3608
Research Forest Drive, Suite B7, The Woodlands, Texas 77381 (hereinafter,
together with its SUBSIDIARIES, "GENOMETRIX").

         WHEREAS, GENOMETRIX owns, controls or has acquired rights under various
patents and applications for patents pending, in various countries of the world,
referred to herein as the E-FIELD MANIPULATION IP, SURFACE CHEMISTRIES IP and
OPTICAL DETECTION IP (each as defined below);

         WHEREAS, GENOMETRIX and MOTOROLA previously entered into the LICENSE
AND OPTION AGREEMENT (as hereinafter defined), whereby GENOMETRIX granted
MOTOROLA rights, including certain option rights, under the E-FIELD MANIPULATION
IP and the SURFACE CHEMISTRIES IP;

         WHEREAS, MOTOROLA wishes to obtain certain additional rights and
certain co-exclusive (with GENOMETRIX) licenses under the E-FIELD MANIPULATION
IP and the SURFACE CHEMISTRIES IP, including certain rights to grant
sublicenses, and in addition thereto, MOTOROLA wishes to obtain rights under the
OPTICAL DETECTION IP and MOTOROLA desires that GENOMETRIX conduct certain
research relating to the SURFACE CHEMISTRIES IP; and

         WHEREAS, GENOMETRIX is willing to grant MOTOROLA the licenses set forth
herein, and GENOMETRIX is willing to conduct the SURFACE CHEMISTRIES RESEARCH
PROGRAM (as hereinafter defined).

         NOW, THEREFORE, the parties agree as follows:

SECTION 1. DEFINITIONS.

         Capitalized terms used herein shall have the definitions assigned to
them in this Section 1, and shall include the singular as well as the plural.

          1.1 AFFILIATE means any corporation or other legal entity that
controls, is controlled by, or is under common control with the named entity.
For purposes of this definition, "control" means the ownership, directly or
indirectly, of more than fifty percent (50%) of the outstanding equity
securities of the entity which are entitled to vote in the election of
directors.

<PAGE>   2

                                            CONFIDENTIAL MATERIAL OMITTED AND
                                            FILED SEPARATELY WITH THE SECURITIES
                                            AND EXCHANGE COMMISSION. ASTERISKS
                                            DENOTE SUCH OMISSIONS.

         1.2 BAYLOR means the Baylor College of Medicine, a Texas nonprofit
corporation having its principal place of business at One Baylor Plaza, Houston,
Texas 77030.

         1.3 BAYLOR AGREEMENT means that certain agreement entered into by and
between GENOMETRIX and BAYLOR and having an effective date of May 31, 1998, and
as amended from time-to-time. A true and accurate copy of the BAYLOR AGREEMENT
is attached hereto as EXHIBIT C.

         1.4 COLLABORATION AGREEMENT means that certain Collaboration Agreement
among MIT, GENOMETRIX and certain others, dated May 28, 1993 and amended
November 5, 1993, and as subsequently amended from time-to-time.

         1.5 complementary PRODUCTS means (a) products and services based on
arrays of size ********************************** ; (b) portable products and
services based on arrays of ************ for use at a single general point of
sample collection and analysis; (c) portable or non-portable products and
services based on arrays ************* for use in clinical diagnostics at any
location, so long as such diagnostic tests do not compete with
************************************************ (the "GENOMETRIX EXCLUSION"),
where allowed products and services shall include but are not limited to tests
for ************************************ (d) for E-FIELD MANIPULATION IP only as
applied to hybridization acceleration and stringency enhancement (specifically
claims 16 and 39 of United States Patent Number 5,653,939, together with
divisionals and continuations thereof), products and services *****************
and (e) such additional products and services based on arrays of any size as
MOTOROLA and GENOMETRIX may mutually agree in writing from time to time. For
purposes of this Section 1.5, an "array" may be comprised of a substrate onto
which biological probes are attached, or comparable implementations utilizing
microfluidics.

         1.6 EFFECTIVE DATE means the date of this Agreement as set forth above.

         1.7 E-FIELD MANIPULATION IP means GENOMETRIX INTELLECTUAL PROPERTY used
for the research, development, manufacture or use of COMPLEMENTARY PRODUCTS and
pertaining to the use of an electric field property, including electrical
properties and electrochemical properties, to: (a) identify molecular structures
within a sample substance applied to one or more test sites, (b) accelerate or
enhance the rate at which interaction mechanisms, such as hybridization, occur
between molecules at one or more test sites, and (c) increase the specificity
and/or selectivity of the interaction between two or more molecular structures.
E-FIELD MANIPULATION IP shall exclude: (x) the use of an electric field property
to synthesize and/or deposit molecular structures onto an array to form test
sites, and (y) optical, radioisotope, chemiluminescent and thermal detection
methods and technology. By way of example but not limitation, EXHIBIT D hereof
sets forth representative claims of certain existing GENOMETRIX PATENTS which
meet the criteria for E-FIELD MANIPULATION IP.

                                       2
<PAGE>   3

         1.8 E-FIELD PRODUCTS means COMPLEMENTARY PRODUCTS (or a portion
thereof) which (a) are covered in whole or in part by, or the use thereof is
covered in whole or in party by, the E-FIELD MANIPULATION IP; or (b) are
manufactured through use of a process which is covered in whole or in part by
the E-FIELD MANIPULATION IP.

         1.9 GENOMETRIX INTELLECTUAL PROPERTY means GENOMETRIX PATENTS and
unpatented information relating to the research, development, manufacture or use
of COMPLEMENTARY PRODUCTS heretofore disclosed to MOTOROLA pursuant to Section
2.1 of the LICENSE AND OPTION AGREEMENT.

         1.10 GENOMETRIX PATENTS means (i) the patents and patent applications
set forth on EXHIBIT A hereof, together with divisions, continuations,
continuations-in-part, reissues and foreign counterparts thereof; (ii) patents
and patent applications other than PROGRAM PATENTS claiming inventions or
discoveries conceived and reduced to practice by GENOMETRIX prior to December
28, 2001, and, with respect to all of the patents and patent applications
identified in (i) and (ii), which meet the criteria for E-FIELD MANIPULATION IP
or SURFACE CHEMISTRIES IP. The foregoing notwithstanding, the term GENOMETRIX
PATENTS includes only such patents and patent applications which are owned,
licensed to or otherwise controlled by GENOMETRIX and with respect to which
GENOMETRIX has the right to grant the licenses set forth herein; and provided,
further, GENOMETRIX PATENTS shall include such patents or patent applications
only to the extent to which and subject to the conditions under which GENOMETRIX
has the right to grant licenses or rights of the scope granted herein.

         1.11 GENOMETRIX PRINCIPAL INVESTIGATOR has the meaning set forth in
Section 2.2.

         1.12 HARC means the Houston Advanced Research Center, having its
principal offices at 4800 Research Forest Drive, The Woodlands, Texas, 77381.

         1.13 LICENSE AND OPTION AGREEMENT means the License and Option
Agreement entered into between MOTOROLA and GENOMETRIX dated December 28, 1998.
A true and accurate copy of the LICENSE AND OPTION AGREEMENT is attached hereto
as EXHIBIT G.

         1.14 LICENSED PRODUCTS means, collectively, the E-FIELD PRODUCTS, the
SURFACE CHEMISTRIES PRODUCTS and the OPTICAL DETECTION PRODUCTS.

         1.15 MIT means the Massachusetts Institute of Technology, a corporation
duly organized and existing under the laws of the Commonwealth of Massachusetts
and having its principal offices at 74 Massachusetts Avenue, Cambridge,
Massachusetts, 02139.

         1.16 MIT AGREEMENT means that certain agreement entered into by and
between GENOMETRIX and MIT and having an effective date of May 27, 1994, as
amended April 1,

                                       3
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                                            CONFIDENTIAL MATERIAL OMITTED AND
                                            FILED SEPARATELY WITH THE SECURITIES
                                            AND EXCHANGE COMMISSION. ASTERISKS
                                            DENOTE SUCH OMISSIONS.

1996 (the 5722L technology only), and as subsequently amended from time-to-time.
A true and accurate copy of the MIT AGREEMENT is attached hereto as EXHIBIT B.

         1.17 MOTOROLA REPRESENTATIVE has the meaning set forth in Section 2.2.

         1.18 MOTOROLA TECHNOLOGY means technology relating to ************
arrays which is provided by MOTOROLA to GENOMETRIX for use in the conduct of the
SURFACE CHEMISTRIES RESEARCH PROGRAM.

         1.19 NET SALES means billings by MOTOROLA, its SUBSIDIARIES or its
sublicensees for LICENSED PRODUCTS sold, leased or transferred hereunder, less
the sum of the following:

         (a)      discounts allowed in amounts customary in the trade;

         (b)      sales, tariff duties and/or use taxes directly imposed and
                  with reference to particular sales;

         (c)      packing and crating charges separately stated;

         (d)      outbound transportation prepaid or allowed; and

         (e)      amounts allowed or credited on returns.

         No deductions shall be made for commissions paid to individuals whether
they be with independent sales agencies or regularly employed by MOTOROLA and on
its payroll, or for cost of collections. LICENSED PRODUCTS shall be considered
"sold" when billed out or invoiced. For LICENSED PRODUCTS disposed of other than
by sale, the NET SALES of such LICENSED PRODUCTS shall be determined based on
the fair market value of such LICENSED PRODUCTS. In the event that a LICENSED
PRODUCT is sold, leased, disposed of or otherwise transferred between MOTOROLA
and an entity affiliated with MOTOROLA in a transaction which results in revenue
to MOTOROLA, the NET SALES of LICENSED PRODUCTS with respect to such transfer
shall be calculated based on the price at which similar quantities of such
LICENSED PRODUCT would have been sold to an independent THIRD PARTY in an
arms-length transaction as of the date of such transfer.

         In the event that a LICENSED PRODUCT is sold in combination with one or
more other integral components not by itself a LICENSED PRODUCT, and such other
integral components are not sold separately, the parties shall arrive at a
reasonable method of calculating NET SALES with respect to such LICENSED
PRODUCT, based on the relative fair market value of such LICENSED PRODUCT as
compared with the fair market value of such other integral components, and
pursuant to the procedures set forth in this paragraph. For the purposes of such
NET SALES determination, representative integral components may include: DNA
sequences, reagents, microfluidics and liquid handling systems, and data
acquisition, manipulation and display systems. In addition, royalties paid to
THIRD PARTIES shall be a consideration in

                                       4
<PAGE>   5

                                            CONFIDENTIAL MATERIAL OMITTED AND
                                            FILED SEPARATELY WITH THE SECURITIES
                                            AND EXCHANGE COMMISSION. ASTERISKS
                                            DENOTE SUCH OMISSIONS.

determining fair market value. If MOTOROLA and GENOMETRIX cannot agree on the
NET SALES of a particular LICENSED PRODUCT that is sold in combination with one
or more other integral components not by itself a LICENSED PRODUCT, such NET
SALES shall be determined as follows: a mutually agreeable THIRD PARTY with
experience in the relevant technology shall be selected by the American
Arbitration Association to determine the method of calculating the NET SALES
(the "Representative"). Each party shall present the Representative with a
detailed written position and have an opportunity for an oral presentation. The
decision of the Representative shall be final, binding and not appealable, and
such proceeding shall be completed within sixty (60) days of the selection of
the Representative. Each of GENOMETRIX and MOTOROLA shall bear its own costs in
connection with such NET SALES determination, and each shall pay one-half of the
fees of the Representative. Notwithstanding the foregoing, the parties agree
that the determination of NET SALES of LICENSED PRODUCTS pursuant to this
Section 1.19 is subject to the MIT AGREEMENT (to the extent the MIT AGREEMENT
applies); provided, however, that GENOMETRIX agrees (where applicable) to use
reasonable best efforts to obtain MIT's approval of the methods utilized by the
parties pursuant to this Section 1.19 for determining such NET SALES.

         1.20 OPTICAL DETECTION IP means GENOMETRIX INTELLECTUAL PROPERTY
pertaining to the use of radiation to detect the presence of molecular
structures, as embodied in claims 20-27 of United States Patent Number
5,653,939, together with divisions, continuations, continuations-in-part,
reissues and foreign counterparts thereof. The foregoing notwithstanding, the
term OPTICAL DETECTION IP includes only such patents and patent applications
which are owned, licensed to or otherwise controlled by GENOMETRIX and with
respect to which GENOMETRIX has the right to grant the licenses set forth
herein; and provided, further, OPTICAL DETECTION IP shall include such patents
or patent applications only to the extent to which and subject to the conditions
under which GENOMETRIX has the right to grant licenses or rights of the scope
granted herein.

         1.21 OPTICAL DETECTION PRODUCTS means (i) COMPLEMENTARY PRODUCTS
containing a ************** developed by MOTOROLA which are not used for
***************** and (ii) products containing a **************** sensor
developed by MOTOROLA and having ************* and used for low throughput
screening for academic research purposes only; and (a) which products (or the
optical sensor contained in such products) are covered in whole or in part by,
or the use thereof is covered in whole or in part by, the OPTICAL DETECTION IP;
or (b) which products (or the optical sensor contained in such products) are
manufactured through use of a process which is covered, in whole or in part, by
the OPTICAL DETECTION IP.

         1.22 PROGRAM PATENTS means all patent applications and patents covering
PROGRAM TECHNOLOGY, together with divisions, continuations,
continuations-in-part, reissues and foreign counterparts thereof. MOTOROLA
PROGRAM PATENTS, GENOMETRIX PROGRAM PATENTS and JOINT PROGRAM PATENTS have the
respective meanings assigned to them in Section 5.1 hereof.

                                       5
<PAGE>   6

                                            CONFIDENTIAL MATERIAL OMITTED AND
                                            FILED SEPARATELY WITH THE SECURITIES
                                            AND EXCHANGE COMMISSION. ASTERISKS
                                            DENOTE SUCH OMISSIONS.

         1.23 PROGRAM TECHNOLOGY means all inventions, discoveries, data,
information, know-how, improvements, developments or discoveries, whether or not
patentable, conceived and reduced to practice pursuant to the conduct of the
SURFACE CHEMISTRIES RESEARCH PROGRAM: (i) solely by employees or others acting
on behalf of GENOMETRIX; (ii) solely by employees or others acting on behalf of
MOTOROLA, or (iii) jointly by employees or others acting on behalf of GENOMETRIX
together with employees or others acting on behalf of MOTOROLA. MOTOROLA PROGRAM
TECHNOLOGY, GENOMETRIX PROGRAM TECHNOLOGY and JOINT PROGRAM TECHNOLOGY have the
respective meaning assigned to them in Section 2.8 hereof.

         1.24 RESEARCH PLAN means the detailed description of the activities to
be conducted by GENOMETRIX pursuant to the SURFACE CHEMISTRIES RESEARCH PROGRAM,
as described in EXHIBIT E. EXHIBIT E may be amended from time to time during the
RESEARCH TERM upon the mutual agreement of the parties.

         1.25 RESEARCH TERM has the meaning set forth in Section 2.1 hereof.

         1.26 SUBLICENSE INCOME means the amounts received by MOTOROLA from a
THIRD PARTY sublicensee in consideration for the grant of rights under the
GENOMETRIX PATENTS, in the form of royalties on the NET SALES of E-FIELD
PRODUCTS and/or SURFACE CHEMISTRIES PRODUCTS by such sublicensee, or in the form
of up-front license fees, milestone payments, clinical development payments and
any other non-royalty cash payments which are specifically given to MOTOROLA in
return for the sublicense. If MOTOROLA receives consideration other than cash
for any such sublicense, SUBLICENSE INCOME shall be calculated as follows: (i)
the fair market value of the consideration received from the sublicensee, based
upon the cash sublicense fee, royalties and other cash consideration which would
have been paid by such sublicensee in the absence of any non-cash consideration,
will be calculated, and (ii) MOTOROLA shall pay GENOMETRIX a percentage of such
fair market value (i.e. SUBLICENSE INCOME) as provided in Section 6 hereof. For
purposes of the fair market value calculation provided for in subsection (i)
above, the fair market value shall not (a) exceed a reasonable percentage of net
sales for such products (combined with license fees), as evidenced by the levels
which are negotiated with THIRD PARTIES, (b) include value derived beyond those
payments which would have arisen from the sublicensee's affected business and
revenue stream, and (c) for the entities and their respective AFFILIATES
identified on ***********************************************************. The
foregoing provisions notwithstanding, MOTOROLA and GENOMETRIX recognize and
agree that the prior written consent of MIT may be required (as provided in
Section 2 of the MIT AGREEMENT) in connection with any sublicense of the E-FIELD
MANIPULATION IP in cases where MOTOROLA is to receive anything of value other
than cash in consideration for the grant of such sublicense, and that the
provisions of this Section 1.26 shall be subject to the applicable provisions of
the MIT AGREEMENT.

         The parties agree to use their best reasonable efforts to agree upon
the determination of fair market value, and each of GENOMETRIX and MOTOROLA
agrees to work with the other

                                       6
<PAGE>   7

diligently and in good faith to evaluate and respond to proposals and/or
counterproposals of the other party with respect to the fair market value of a
contemplated sublicense under the GENOMETRIX PATENTS granted or to be granted by
MOTOROLA. If the parties are unable to agree on a fair market value
determination as provided in the first paragraph (above) of this Section 1.26,
then such fair market value shall be determined as follows: a mutually agreeable
THIRD PARTY with experience in the relevant technology shall be selected by the
American Arbitration Association to determine the method of calculating such
fair market value (the "Representative"). Each party shall present the
Representative with a detailed written position and have an opportunity for an
oral presentation. The decision of the Representative shall be final, binding
and not appealable, and such proceeding shall be completed within sixty (60)
days of the selection of the Representative. At any point in this process,
including once the arbitration decision has been made, MOTOROLA shall have the
sole right to determine whether or not to grant the sublicense. Each of
GENOMETRIX and MOTOROLA shall bear its own costs in connection with such fair
market value determination, and each shall pay one-half of the fees of the
Representative. Notwithstanding the foregoing, the parties agree that the
determination of SUBLICENSE INCOME based on any assessment of fair market value
pursuant to this Section 1.26 is subject to the MIT AGREEMENT (to the extent the
MIT AGREEMENT applies); provided, however, that GENOMETRIX agrees (where
applicable) to use reasonable best efforts to obtain MIT's approval of the
methods utilized by the parties pursuant to this Section 1.26 for determining
such SUBLICENSE INCOME.

         1.27 SUBSIDIARY means a corporation, company, or other entity more than
forty-eight percent (48%) of whose outstanding shares or securities
(representing the right to vote for the election of directors or other managing
authority) are, now or hereafter, owned or controlled, directly or indirectly by
a party hereto, but such corporation, company, or other entity shall be deemed
to be a SUBSIDIARY only so long as such ownership or control exists. Unless
otherwise specified, the term MOTOROLA includes its SUBSIDIARIES and the term
GENOMETRIX includes its SUBSIDIARIES.

         1.28 SURFACE CHEMISTRIES IP means GENOMETRIX INTELLECTUAL PROPERTY used
for the research, development, manufacture or use of COMPLEMENTARY PRODUCTS and
pertaining to the use of specific molecular structures to alter the ionic and/or
hydrophobic properties of an array site to: (a) accelerate the rate at which
molecular interactions occur at the site, (b) increase the specificity and/or
selectivity of the interaction between molecular structures at the site, (c)
enable molecular interactions to occur with adequate or enhanced specificity at
non-elevated temperatures, including ambient or room temperature, and (d) enable
molecular interactions to occur at minimized salt concentrations, but excluding
combinatorial chemistry approaches and associated hybridization devices to
develop and/or evaluate alternative chemistries. By way of example and without
limitation, EXHIBIT D hereof sets forth representative claims of certain
existing GENOMETRIX PATENTS which meet the criteria for SURFACE CHEMISTRIES IP.

         1.29 SURFACE CHEMISTRIES PRODUCTS means COMPLEMENTARY PRODUCTS
which (a) are covered in whole or in part by, or the use thereof is covered in
whole or in part by, the SURFACE CHEMISTRIES IP or (b) are manufactured through
use of a process which is covered, in whole or in part, the SURFACE CHEMISTRIES
IP.

                                       7
<PAGE>   8

         1.30 SURFACE CHEMISTRIES RESEARCH PROGRAM means the program of research
to be conducted by GENOMETRIX and funded by MOTOROLA pursuant to this Agreement,
as described in detail in Section 2 of this Agreement and in the RESEARCH PLAN.

         1.31 THIRD PARTY means any individual or entity other than MOTOROLA and
its SUBSIDIARIES and other than GENOMETRIX and its SUBSIDIARIES.

         1.32 VALID PATENT CLAIM means (i) a claim of an issued patent that has
not expired or been declared invalid by a court or administrative proceeding
from which there is no appeal; and (ii) a pending claim asserted in good faith
and with respect to which GENOMETRIX has an obligation to pay a royalty to MIT
pursuant to the MIT AGREEMENT.

         1.33 UNIVERSAL ARRAY IP has the meaning set forth in Section 1.3 of the
LICENSE and OPTION AGREEMENT.

         1.34 UNIVERSAL ARRAY PRODUCTS has the meaning set forth in Section 1.9
of the LICENSE and OPTION AGREEMENT.

SECTION 2. THE SURFACE CHEMISTRIES RESEARCH PROGRAM; RIGHTS TO PROGRAM
TECHNOLOGY AND PROGRAM PATENTS.

         2.1 MOTOROLA and GENOMETRIX have agreed that GENOMETRIX will conduct
the SURFACE CHEMISTRIES RESEARCH PROGRAM for the purpose of adapting the
technology embodied in the SURFACE CHEMISTRIES IP to MOTOROLA's biochip
platform. The SURFACE CHEMISTRIES RESEARCH PROGRAM shall commence on or before
July 31, 1999 and, unless extended by the mutual written agreement of the
parties, or unless this Agreement is earlier terminated, shall expire on the
later of (i) January 31, 2000, or (ii) the date of completion by GENOMETRIX of
the tasks set forth in EXHIBIT E (hereinafter the "RESEARCH TERM"). Payment of
research funding by MOTOROLA and completion of the SURFACE CHEMISTRIES RESEARCH
PROGRAM shall be based upon the reasonable best efforts of GENOMETRIX to perform
the tasks specified in the RESEARCH PLAN, rather than the results generated. A
draft of the RESEARCH PLAN, describing the activities of GENOMETRIX pursuant to
the SURFACE CHEMISTRIES RESEARCH PROGRAM, is attached hereto as EXHIBIT E. On or
before July 31, 1999, MOTOROLA shall disclose to GENOMETRIX all MOTOROLA
TECHNOLOGY necessary or useful to initiate the conduct of the SURFACE
CHEMISTRIES RESEARCH PROGRAM. Further MOTOROLA TECHNOLOGY shall subsequently be
disclosed in a timely manner as needed to complete the SURFACE CHEMISTRIES
RESEARCH PROGRAM. Such MOTOROLA TECHNOLOGY shall be deemed to be the
CONFIDENTIAL INFORMATION of MOTOROLA hereunder, and shall be treated as such
pursuant to Section 10 hereof.

         2.2 GENOMETRIX will use commercially reasonable efforts to conduct the
SURFACE CHEMISTRIES RESEARCH PROGRAM as provided in the RESEARCH PLAN.

                                       8
<PAGE>   9

                                            CONFIDENTIAL MATERIAL OMITTED AND
                                            FILED SEPARATELY WITH THE SECURITIES
                                            AND EXCHANGE COMMISSION. ASTERISKS
                                            DENOTE SUCH OMISSIONS.

Thomas Powdrill, D.V.M (the "GENOMETRIX PRINCIPAL INVESTIGATOR") shall serve as
the project leader, and shall keep MOTOROLA's representative Charles Brush,
Ph.D. (the "MOTOROLA REPRESENTATIVE") reasonably informed of the progress of the
RESEARCH PROGRAM, as set forth herein. Modifications to the RESEARCH PLAN may be
made from time to time during the RESEARCH TERM, upon the mutual written
agreement of MOTOROLA and GENOMETRIX.

         2.3 MOTOROLA agrees to provide GENOMETRIX with funding in the amount of
*************** for the conduct of the SURFACE CHEMISTRIES RESEARCH PROGRAM.
Such amount shall be payable in the amount of **************** prior to the
initiation of the SURFACE CHEMISTRIES RESEARCH PROGRAM, ***************** after
the earlier of three months or completion of 1/2 of the SURFACE CHEMISTRIES
RESEARCH PROGRAM deliverables, and **************** upon completion of the
SURFACE CHEMISTRIES RESEARCH PROGRAM, and shall be non-refundable once
GENOMETRIX has completed the portion of the SURFACE CHEMISTRIES RESEARCH
corresponding to the portion of payment made by MOTOROLA, as set forth in the
RESEARCH PLAN. As provided in Section 2.1, completion of the SURFACE CHEMISTRIES
RESEARCH PROGRAM, and payment by MOTOROLA of the amounts set forth in this
Section 2.3, shall be based upon the reasonable best efforts of GENOMETRIX to
perform the specified tasks set forth in the RESEARCH PLAN, rather than the
results generated. Throughout the RESEARCH TERM, both parties shall review the
results generated, and if future tasks do not appear to be appropriate, shall in
good faith and upon mutual agreement either (i) determine an alternate course of
action or (ii) terminate the SURFACE CHEMISTRIES RESEARCH PROGRAM.

         2.4 The GENOMETRIX PRINCIPAL INVESTIGATOR, the MOTOROLA REPRESENTATIVE,
and any others working on the SURFACE CHEMISTRIES RESEARCH PROGRAM will maintain
accurate scientific records relating to the SURFACE CHEMISTRIES RESEARCH
PROGRAM. It is understood that such records shall include laboratory notebooks
sufficient to document any PROGRAM TECHNOLOGY developed pursuant to the conduct
of the SURFACE CHEMISTRIES RESEARCH PROGRAM.

         2.5 Commencing on the EFFECTIVE DATE, and thereafter during the
RESEARCH TERM, joint scientific meetings between the GENOMETRIX PRINCIPAL
INVESTIGATOR and the MOTOROLA REPRESENTATIVE shall occur at least monthly by
telephone or videoconference and at least once in person at GENOMETRIX's
facilities in The Woodlands, Texas, to discuss the results generated under the
SURFACE CHEMISTRIES RESEARCH PROGRAM and to consider modifications to or an
expansion of the RESEARCH PLAN based upon such results.

         2.6 GENOMETRIX and MOTOROLA shall promptly disclose to each other all
PROGRAM TECHNOLOGY developed pursuant to the conduct of the SURFACE CHEMISTRIES
RESEARCH PROGRAM. Such PROGRAM TECHNOLOGY shall be considered as CONFIDENTIAL
INFORMATION pursuant to Section 10 hereof.

                                       9
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                                            CONFIDENTIAL MATERIAL OMITTED AND
                                            FILED SEPARATELY WITH THE SECURITIES
                                            AND EXCHANGE COMMISSION. ASTERISKS
                                            DENOTE SUCH OMISSIONS.

         2.7 GENOMETRIX and MOTOROLA shall require the GENOMETRIX PRINCIPAL
INVESTIGATOR and the MOTOROLA REPRESENTATIVE, respectively, and any other
employees, agents or consultants of GENOMETRIX or MOTOROLA (as the case may be)
conducting activities under the SURFACE CHEMISTRIES RESEARCH PROGRAM, to be
subject to an obligation to assign to GENOMETRIX or MOTOROLA, respectively, all
of the right, title and interest of the GENOMETRIX PRINCIPAL INVESTIGATOR, the
MOTOROLA REPRESENTATIVE, or any such other employee of GENOMETRIX or MOTOROLA in
the PROGRAM TECHNOLOGY.

         2.8 PROGRAM TECHNOLOGY conceived and reduced to practice solely by
employees or others acting on behalf of GENOMETRIX shall be owned solely by
GENOMETRIX (hereinafter "GENOMETRIX PROGRAM TECHNOLOGY"). PROGRAM TECHNOLOGY
conceived and reduced to practice solely by employees or others acting on behalf
of MOTOROLA shall be owned solely by MOTOROLA (hereinafter "MOTOROLA PROGRAM
TECHNOLOGY"). PROGRAM TECHNOLOGY conceived and reduced to practice jointly by
employees or others acting on behalf of GENOMETRIX together with employees or
others acting on behalf of MOTOROLA shall be owned jointly by MOTOROLA and
GENOMETRIX (hereinafter "JOINT PROGRAM TECHNOLOGY"). Use of any PROGRAM
TECHNOLOGY, regardless of whether such PROGRAM TECHNOLOGY is owned solely or
jointly by such party, shall be subject to the terms and conditions of this
Agreement, and in particular the provisions of Sections 2.9 and 2.10 below, and
neither party shall have the right to use the PROGRAM TECHNOLOGY, except as set
forth in this Section 2.

         2.9 GENOMETRIX shall have the right to use all PROGRAM TECHNOLOGY for
any purposes (including to support the filing and prosecution of patent
applications owned or controlled by GENOMETRIX) other than use in conjunction
with gel pad format arrays, including without limitation for GENOMETRIX's
internal research purposes and to develop, make, use sell and import products
other than gel pad format array products or microfluidic products covered by a
patent or other intellectual property right of MOTOROLA. MOTOROLA hereby grants
GENOMETRIX a perpetual, world-wide, royalty-free right and license under its
interest in the PROGRAM TECHNOLOGY and under any PROGRAM PATENT RIGHTS, for
GENOMETRIX's internal research purposes, and to develop, make, use, offer for
sale, sell and import products other than gel pad format array products or
microfluidic products covered by a patent or other intellectual property right
of MOTOROLA. Such license shall include the right to grant sublicenses, except
that in no event shall GENOMETRIX have the right to grant sublicenses to any
THIRD PARTY in the field of COMPLEMENTARY PRODUCTS unless GENOMETRIX first
obtains the written consent of MOTOROLA, such consent not to be unreasonably
withheld or delayed.

         2.10 (a) MOTOROLA shall have the right to use the MOTOROLA PROGRAM
TECHNOLOGY for its research, development and commercial purposes in
************.

              (b) MOTOROLA shall have the right to use the JOINT PROGRAM
TECHNOLOGY and the GENOMETRIX PROGRAM TECHNOLOGY for its research,

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development and commercial purposes in the field of COMPLEMENTARY PRODUCTS,
including to develop, make, use, sell and import E-FIELD PRODUCTS and SURFACE
CHEMISTRIES PRODUCTS. GENOMETRIX hereby grants MOTOROLA a perpetual, world-wide,
royalty-free right and license under its interest in the PROGRAM TECHNOLOGY and
the PROGRAM PATENTS to use such PROGRAM TECHNOLOGY for research and development
purposes in the field of COMPLEMENTARY PRODUCTS, and to develop, make, use,
offer for sale, sell and import COMPLEMENTARY PRODUCTS. Such license shall
include the right to grant sublicenses to one or more THIRD PARTIES in the field
of COMPLEMENTARY PRODUCTS.

SECTION 3.        LICENSES UNDER THE E-FIELD MANIPULATION IP, THE SURFACE
CHEMISTRIES IP AND THE OPTICAL DETECTION IP.

         3.1 GENOMETRIX hereby grants to MOTOROLA, a *************** license
under the E-FIELD MANIPULATION IP, to make, have made, use, offer to sell, sell
and import E-FIELD PRODUCTS. GENOMETRIX shall retain the right to use the
E-FIELD MANIPULATION IP for any and all purposes, including, without limitation,
for use in COMPLEMENTARY PRODUCTS and to make, have made, use, offer to sell,
sell and import E-FIELD PRODUCTS; provided, that, so long as MOTOROLA makes the
payments set forth in Section 6.4 hereof, this license shall be co-exclusive
(with GENOMETRIX) whereby MOTOROLA shall have exclusive sublicensing rights in
the field of COMPLEMENTARY PRODUCTS, and GENOMETRIX agrees not to grant any
THIRD PARTY rights under the E-FIELD MANIPULATION IP to make, have made, use,
offer to sell, sell or import E-FIELD PRODUCTS. The foregoing notwithstanding,
MOTOROLA recognizes that the rights granted to it pursuant to this Section 3.1
are subject to the MIT AGREEMENT, and the exclusivity period set forth therein
(hereinafter the "MIT Exclusivity Period"). *************** GENOMETRIX agrees to
use its reasonable best efforts to meet its obligations under the MIT AGREEMENT
and to maintain the ****************. Upon the expiration or early termination
of the ***************, MIT shall have the right *************************.
Notwithstanding the foregoing, GENOMETRIX agrees to use commercially reasonable
efforts to obtain MIT's consent to ******************************* GENOMETRIX
PATENTS comprising the E-FIELD MANIPULATION IP licensed from MIT to GENOMETRIX;
provided, that, such efforts shall not be construed to require GENOMETRIX to pay
any additional fees to MIT.

         3.2 GENOMETRIX hereby grants to MOTOROLA, a **************** license
under the SURFACE CHEMISTRIES IP to make, have made, use, offer to sell, sell
and import SURFACE CHEMISTRIES PRODUCTS. GENOMETRIX shall retain the right to
use the SURFACE CHEMISTRIES IP for any and all purposes, including without
limitation, for use in COMPLEMENTARY PRODUCTS and to make, have made, use, offer
to sell, sell and import SURFACE CHEMISTRIES PRODUCTS; provided, that, so long
as MOTOROLA makes the payments set forth in Section 6.4 hereof this license
shall be co-exclusive (with GENOMETRIX) whereby MOTOROLA shall have exclusive
sublicensing rights in the field of COMPLEMENTARY

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PRODUCTS, and GENOMETRIX agrees not to grant any THIRD PARTY rights under the
SURFACE CHEMISTRIES IP to make, use, sell or import SURFACE CHEMISTRIES
PRODUCTS.

         3.3 The licenses granted to MOTOROLA pursuant to Sections 3.1 and 3.2
hereof shall include the right of MOTOROLA to grant sublicenses to THIRD PARTIES
so long as MOTOROLA pays GENOMETRIX the annual minimum royalty payments set
forth in Section 6.4 hereof. MOTOROLA shall provide GENOMETRIX with prompt
written notice of any such sublicense, and any such sublicensee shall agree in
writing to obligations of confidentiality and restrictions on use of the
GENOMETRIX INTELLECTUAL PROPERTY which are no less stringent than the
restrictions set forth herein and shall agree to be subject to (where
applicable) the MIT AGREEMENT and/or the BAYLOR AGREEMENT.

         3.4 If MOTOROLA does not pay the minimum royalty payments set forth in
Section 6.4 hereof, GENOMETRIX shall provide written notification to MOTOROLA
thereof, after which MOTOROLA shall have thirty (30) days to make such past due
payments to GENOMETRIX in full. If MOTOROLA does not make such payments,
GENOMETRIX shall have the right to terminate MOTOROLA's right to grant
sublicenses under the licenses granted to MOTOROLA pursuant to Sections 3.1 and
3.2 above upon written notice to MOTOROLA. In the event MOTOROLA's right to
grant sublicenses under the licenses granted under Sections 3.1 and 3.2 is
terminated pursuant to this section 3.4, and so long as MOTOROLA is not
otherwise in default of this Agreement, (i) MOTOROLA shall maintain a
non-exclusive license under Sections 3.1 and 3.2 without the right to grant
sublicenses, and no further minimum royalty payments by MOTOROLA shall be due
pursuant to Section 6.4, and (ii) GENOMETRIX shall have the right to grant
licenses or sublicenses to one or more THIRD PARTIES under the E-FIELD
MANIPULATION IP and/or the SURFACE CHEMISTRIES IP in the field of COMPLEMENTARY
PRODUCTS.

         3.5 GENOMETRIX hereby grants to MOTOROLA, a **************
************** license under the OPTICAL DETECTION IP, to make, have made, use,
offer to sell, sell and import OPTICAL DETECTION PRODUCTS. Such license shall
include the right to grant sublicenses to THIRD PARTIES only to the extent
necessary to enable MOTOROLA to contract with THIRD PARTIES for the manufacture
of LICENSED PRODUCTS solely for MOTOROLA'S account and not for sale or other
commercial disposition by such THIRD PARTY; provided, that, such THIRD PARTY
shall agree in writing to obligations of confidentiality and restrictions on the
use of the GENOMETRIX INTELLECTUAL PROPERTY and the OPTICAL DETECTION IP which
are no less stringent than the restrictions set forth herein.

         3.6 Notwithstanding any provision to the contrary contained in this
Agreement, the licenses and options granted to MOTOROLA hereunder shall not
include the field of use of *****************************************.

         3.7 The licenses granted to MOTOROLA hereunder shall be subject to the
provisions of the MIT AGREEMENT and/or the BAYLOR AGREEMENT, to the extent set
forth in such agreements, and MOTOROLA shall be bound by certain obligations
(but in all cases excluding

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payment obligations) to MIT and to BAYLOR, respectively, as if it were the
licensee under such agreements, only to the extent set forth and as required in
such agreements. Copies of the MIT AGREEMENT and the BAYLOR AGREEMENT are
attached to this Agreement as EXHIBIT B and EXHIBIT C, respectively. Copies of
this Agreement shall be provided by GENOMETRIX to MIT and BAYLOR under
confidentiality.

         3.8 MOTOROLA hereby acknowledges that GENOMETRIX has licensed certain
of the GENOMETRIX PATENTS and the OPTICAL DETECTION IP from THIRD PARTIES,
including without limitation MIT and BAYLOR, and the rights thereto granted to
MOTOROLA hereunder may be subject to compliance with and provisions of the terms
of such license agreements, including the right of THIRD PARTIES to practice
under the GENOMETRIX PATENTS and the OPTICAL DETECTION IP for non-commercial
research and academic purposes, as further provided in GENOMETRIX's agreements
with such THIRD PARTIES. If for any reason GENOMETRIX is in default or has
failed to comply with the terms of any agreement with THIRD PARTIES concerning
the GENOMETRIX PATENTS, then GENOMETRIX shall promptly give notice of such
default, termination, repudiation or cancellation to MOTOROLA who shall have the
option but not the obligation to take such steps and make such payments as may
be required in order to rectify the default and to bring the agreements pursuant
to which MOTOROLA holds the GENOMETRIX PATENTS and/or the OPTICAL DETECTION IP
into good standing; provided, that, any monies expended by MOTOROLA in so doing
shall be fully creditable against any royalties or other monies due and owing to
GENOMETRIX hereunder.

         3.9 If GENOMETRIX grants a non-exclusive license or sublicense under
the E-FIELD MANIPULATION IP or the SURFACE CHEMISTRIES IP to any THIRD PARTY for
a field of use other than the field of COMPLEMENTARY PRODUCTS licensed to
MOTOROLA hereunder, then GENOMETRIX shall provide MOTOROLA with written
notification thereof, and MOTOROLA shall have the right, but not the obligation,
to obtain the same license on terms which are no less favorable (when taken as a
whole) to MOTOROLA than the most favorable terms offered to and accepted by any
non-exclusive licensee or sublicensee, taking into account any development
funding and other consideration.

         3.10 If GENOMETRIX determines to grant an exclusive license or
sublicense under the E-FIELD MANIPULATION IP or the SURFACE CHEMISTRIES IP to a
THIRD PARTY in a field of use outside the field of COMPLEMENTARY PRODUCTS,
GENOMETRIX shall provide MOTOROLA with prompt written notification thereof prior
to offering such license or sublicense to a THIRD PARTY, and MOTOROLA shall have
an exclusive first right and option (the "Option") to obtain an exclusive,
world-wide, royalty-bearing license under the E-FIELD MANIPULATION IP or the
SURFACE CHEMISTRIES IP, as the case may be, and on reasonable terms and
conditions, in the field of use contemplated by GENOMETRIX for licensing to a
THIRD PARTY. MOTOROLA shall exercise such Option by providing GENOMETRIX with
written notice thereof within thirty (30) days after GENOMETRIX's notification
to MOTOROLA hereunder (the "Option Period"). If MOTOROLA exercises the Option
within the Option Period, GENOMETRIX and MOTOROLA shall promptly thereafter
commence good faith negotiations to arrive at and execute a definitive exclusive
license agreement with respect to the additional field of use for the E-FIELD
MANIPULATION IP or the SURFACE CHEMISTRIES IP (as the case may be) within sixty
(60)

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days from the date MOTOROLA exercises the Option hereunder (the "Negotiation
Period"). If MOTOROLA fails to exercise the Option within the Option Period, or
if MOTOROLA and GENOMETRIX are unable to execute the definitive license
agreement within the Negotiation Period, GENOMETRIX shall be free to exclusively
license or sublicense the applicable field of the E-FIELD MANIPULATION IP or the
SURFACE CHEMISTRIES IP (as the case may be) to a THIRD PARTY, and GENOMETRIX
shall have no further obligations to MOTOROLA with respect to thereto so long as
the exclusive license has actually been granted to a THIRD PARTY.

         3.11 Notwithstanding any other provision of this Agreement, nothing
herein shall be construed as granting or requiring either party to grant any
license or rights under its intellectual property to any party outside this
Agreement.

         3.12 MOTOROLA agrees that any LICENSED PRODUCT produced for sale in the
United States will be manufactured substantially in the United States, unless
any waiver of such requirement is obtained.

         3.13 All rights reserved to the United States Government and others
under Public Law 96-517 and 98-620 shall remain and shall in no way be affected
by this Agreement.

SECTION 4.        GENOMETRIX ACCESS TO HIGH DENSITY ARRAYS.

         At the parties' mutual option, MOTOROLA agrees to provide high density
arrays ********************** to GENOMETRIX on mutually agreeable terms.
GENOMETRIX shall have the right to use such high density arrays for its internal
research purposes or as otherwise agreed. The rights granted to GENOMETRIX in
this section 4 shall not be transferred to a THIRD PARTY without the written
permission of MOTOROLA.

SECTION 5.        RIGHTS TO FILE AND ENFORCE THE PROGRAM PATENTS AND THE
GENOMETRIX PATENTS.

         5.1 (a) GENOMETRIX shall have the sole right to prepare, file,
prosecute and maintain PROGRAM PATENTS covering GENOMETRIX PROGRAM TECHNOLOGY
(hereinafter the "GENOMETRIX PROGRAM PATENTS"). MOTOROLA shall have the sole
right to prepare, file, prosecute and maintain PROGRAM PATENTS covering MOTOROLA
PROGRAM TECHNOLOGY (hereinafter "MOTOROLA PROGRAM PATENTS"). The parties shall
jointly determine whether to prepare, file, prosecute and maintain PROGRAM
PATENTS covering JOINT PROGRAM TECHNOLOGY (hereinafter "JOINT PROGRAM PATENTS"),
and in such case the parties shall mutually agree on an acceptable patent
attorney who will be responsible for the preparation, filing, prosecution and
maintenance of any such JOINT PROGRAM PATENTS. The parties agree to share
equally in all reasonable costs associated with the procurement and maintenance
of any such JOINT PROGRAM PATENTS. The parties shall consult with each other as
to the preparation, filing, prosecution and

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maintenance of the JOINT PROGRAM PATENTS reasonably prior to any deadline or
action with the U.S. Patent & Trademark Office or its foreign equivalent, and
shall furnish to the other party copies of relevant documents in its possession
reasonably in advance of such consultation. In the event of any disagreement
relating to the preparation, filing, prosecution and maintenance of the JOINT
PROGRAM PATENTS, the dispute shall be resolved pursuant to the dispute
resolution provisions of Section 11.9 hereof. In the event that either party
decides to abandon the JOINT PROGRAM PATENTS or later declines responsibility
for the prosecution or maintenance of the JOINT PROGRAM PATENTS, on a
country-by-country basis, such party shall provide reasonable prior written
notice to the other party of such intention to abandon or decline
responsibility, and such other party shall have the right, at its expense, to
prepare, file, prosecute and maintain such JOINT PROGRAM PATENTS in such
country.

             (b) GENOMETRIX shall have the right to enforce and defend the
GENOMETRIX PROGRAM PATENTS. MOTOROLA shall have the sole right to enforce and
defend the MOTOROLA PROGRAM PATENTS. Enforcement of the JOINT PROGRAM PATENTS
shall be determined in good faith by the parties, and neither party shall have
the right to bring an action for infringement of the JOINT PROGRAM PATENTS
without obtaining the prior written consent of the other party, such consent not
to be unreasonably withheld or delayed. Neither party may settle any
infringement or declaratory judgment action relating to the JOINT PROGRAM
PATENTS without first obtaining the written consent of the other party, such
consent not to be unreasonably withheld.

         5.2 GENOMETRIX shall have responsibility, alone or in conjunction with
its licensors, for the preparation, filing, prosecution, and maintenance of any
and all patent applications and patents comprising the GENOMETRIX PATENTS.
GENOMETRIX shall promptly inform MOTOROLA regarding all matters directly
pertaining to the prosecution or maintenance of the GENOMETRIX PATENTS, to the
extent such matters specifically relate to E-FIELD PRODUCTS or SURFACE
CHEMISTRIES PRODUCTS, and only to the extent permitted by its agreements with
licensors of the applicable patent or patent application. In addition, to the
extent permitted by its agreements with THIRD PARTIES, GENOMETRIX shall seek
MOTOROLA's counsel concerning all proposed courses of action affecting the scope
of such GENOMETRIX PATENTS, to the extent any such course of action directly
relates to E-FIELD PRODUCTS or SURFACE CHEMISTRIES PRODUCTS, including, but not
limited to, the countries in which patent prosecution should be obtained, and
MOTOROLA shall be provided with a reasonable opportunity to comment on any
document that GENOMETRIX intends to file or cause to be filed with the relevant
intellectual property or patent office relating directly to any such GENOMETRIX
PATENTS.

         5.3 If, during the prosecution of any patent application covering any
GENOMETRIX PATENT in E-FIELD MANIPULATION IP or SURFACE CHEMISTRIES IP under
which MOTOROLA has obtained a license hereunder, GENOMETRIX decides or is
advised of a decision to discontinue prosecution of the application or
maintenance of such patent, GENOMETRIX shall promptly advise MOTOROLA of the
decision and, if so requested by MOTOROLA, shall, at its sole discretion and
only to the extent permitted under GENOMETRIX's agreements with THIRD PARTIES,
continue such prosecution or

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maintenance; provided, that, MOTOROLA shall bear all the costs associated with
such continued prosecution or maintenance.

         5.4 If GENOMETRIX or MOTOROLA learn of the infringement or threatened
infringement of any GENOMETRIX PATENT such party will inform the other party
(GENOMETRIX or MOTOROLA, as the case may be) in writing within thirty (30) days
and provide all known evidence of the infringement.

         5.5 MOTOROLA may request in writing that GENOMETRIX take legal action
against infringement or potential infringement of a GENOMETRIX PATENT under
which MOTOROLA has obtained a license hereunder if such infringement or
potential infringement relates to an E-FIELD PRODUCT or a SURFACE CHEMISTRIES
PRODUCT. In such case, GENOMETRIX and MOTOROLA shall confer to determine in good
faith an appropriate course of action to enforce such GENOMETRIX PATENT, or
otherwise abate the infringement thereof, to the extent permitted (where
applicable) by GENOMETRIX's agreements with THIRD PARTY licensors of the E-FIELD
MANIPULATION IP or the SURFACE CHEMISTRIES IP. Notwithstanding the foregoing,
and subject to the provisions of such THIRD PARTY agreements, MOTOROLA shall
have the right, but not the obligation, to enforce the GENOMETRIX PATENTS
comprising the E-FIELD MANIPULATION IP and the SURFACE CHEMISTRIES IP in the
field of COMPLEMENTARY PRODUCTS, including, without limitation, by commencing
legal action against infringers. MOTOROLA agrees to keep GENOMETRIX reasonably
informed of any activities conducted by it pursuant to this Section 5.5.
GENOMETRIX may, if requested by MOTOROLA, join in a lawsuit commenced by
MOTOROLA, but will not commence any legal action in the areas in which MOTOROLA
has rights of enforcement without the prior written consent of MOTOROLA, such
consent not to be unreasonably withheld.

         5.6 Each party will cooperate with the other in litigation proceedings
against any THIRD PARTY brought under this Agreement, except that either party
may be represented, at its sole expense, by counsel of its choice in any suit
brought by the other party.

         5.7 Any information provided to MOTOROLA pursuant to this Section 5
shall be considered the CONFIDENTIAL INFORMATION of GENOMETRIX and shall be
treated in accordance with the provisions of Section 10 hereof. Any information
provided to GENOMETRIX pursuant to this Section 5 shall be considered the
CONFIDENTIAL INFORMATION of MOTOROLA and shall be treated in accordance with the
provisions of Section 10 hereof.

SECTION 6.        PAYMENTS AND REPORTS.

         6.1 In consideration for the rights and license granted to MOTOROLA
pursuant to this Agreement, MOTOROLA shall pay GENOMETRIX an up front license
fee of **********************. Such amount shall be payable by MOTOROLA on or
before

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December 31, 2000, and ******** of such amount shall be creditable toward the
royalties (including minimum annual royalties) to be paid by MOTOROLA to
GENOMETRIX pursuant to Sections 6.2 and 6.4 hereof.

         6.2 In consideration for the rights and licenses granted hereunder,
MOTOROLA shall pay GENOMETRIX a single royalty of ***************** NET SALES of
LICENSED PRODUCTS sold by MOTOROLA or its SUBSIDIARIES and covered by a VALID
PATENT CLAIM; provided, that, such royalty shall be fully paid-up, and no
further royalty shall be due, (a) for any calendar year for which the total
royalty payments by MOTOROLA under this Section 6.2, in addition to other
royalties which may be payable by MOTOROLA to GENOMETRIX pursuant to a license
agreement entered into between the parties after the EFFECTIVE DATE in
connection with the exercise by MOTOROLA of its option under the UNIVERSAL ARRAY
IP pursuant to the LICENSE AND OPTION AGREEMENT, *********************** or (b)
if the total royalties paid to GENOMETRIX by MOTOROLA under this Section 6.2
have reached **********************************. The foregoing notwithstanding,
if MOTOROLA has commercialized and continues to commercialize an OPTICAL
DETECTION PRODUCT covered by a VALID PATENT CLAIM, then the total royalty cap
shall be increased by************************ or a total of
****************************. The foregoing notwithstanding, if MOTOROLA's
royalties are fully paid up pursuant to subsection (a) or (b) hereof, and if
GENOMETRIX continues to have an obligation to pay royalties to MIT pursuant to
the MIT AGREEMENT as a result of the sale, lease transfer or other disposal of
LICENSED PRODUCTS by MOTOROLA, its SUBSIDIARIES or sublicensees pursuant to this
Agreement, MOTOROLA shall pay GENOMETRIX a royalty equal to the royalty which is
owed MIT by GENOMETRIX; provided, that, GENOMETRIX agrees to use reasonable best
efforts to obtain from MIT a waiver of the payment of such additional royalties;
and provided, further, that the term "reasonable best efforts" shall not be
interpreted to require GENOMETRIX to pay additional consideration to MIT in
order to secure such a waiver. If MOTOROLA is required to pay additional
consideration to MIT in order to maintain the Exclusivity Period (as defined in
Section 3.1 hereof) under the MIT AGREEMENT, and if MOTOROLA is continuing to
pay royalties on the NET SALES of LICENSED PRODUCTS to GENOMETRIX, the royalties
owed to GENOMETRIX by MOTOROLA shall be reduced by the amount paid by MOTOROLA
to MIT in consideration for the maintenance of the Exclusivity Period.

         6.3 In consideration of the rights and licenses granted hereunder,
MOTOROLA shall pay GENOMETRIX a percentage of any SUBLICENSE INCOME received by
MOTOROLA in consideration for the grant of a sublicense under the GENOMETRIX
PATENTS. The applicable percentage of SUBLICENSE INCOME shall be determined as
follows: (i) Except as otherwise provided in Section 6.3(ii) below, MOTOROLA
shall pay GENOMETRIX ************************ and (ii) if MOTOROLA grants a
sublicense under the GENOMETRIX PATENTS to a THIRD PARTY *********** MOTOROLA
shall pay GENOMETRIX the percentage of SUBLICENSE INCOME set forth on
**********; provided, that, the percentages of SUBLICENSE INCOME set forth on
*********** shall only apply to those sublicenses of GENOMETRIX PATENTS
generated by MOTOROLA with the identified entities and their

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respective AFFILIATES and which provide rights in the fields set forth on
*********. The foregoing notwithstanding, in all cases the percentage of
SUBLICENSE INCOME payable by MOTOROLA to GENOMETRIX in consideration for the
grant of a sublicense under the GENOMETRIX PATENTS shall be equal to or greater
than the amount owed by GENOMETRIX to MIT pursuant to the MIT AGREEMENT.
MOTOROLA agrees to provide GENOMETRIX with advance written notice of and a copy
of any such sublicense agreements.

         6.4 Except as provided in Section 3.4, MOTOROLA shall pay GENOMETRIX
minimum royalties in the following amounts so long as the exclusive license
under the MIT AGREEMENT is maintained:

                  Calendar Year 2000                           ***********
                  Calendar Year 2001                           ***********
                  Calendar Year 2002 and thereafter            ***********

         The minimum annual royalty payments shall be made to GENOMETRIX in
equal portions on a quarterly basis, within forty-five (45) days of the end of
each quarter. Each quarter, the total royalties due to GENOMETRIX for the
calendar year to that date shall be compared to the total due if minimum levels
were paid, and the amount paid for the quarter shall be adjusted such that
GENOMETRIX shall have received in aggregation for the calendar year the greater
of (i) the royalties actually due and (ii) the minimum royalty payment, if paid
in equal quarterly portions, which should have been paid to GENOMETRIX.

         6.5 If one or more claims of a GENOMETRIX PATENT or the OPTICAL
DETECTION IP issues and covers a LICENSED PRODUCT under which MOTOROLA is not
paying royalties to GENOMETRIX pursuant to this Agreement as of such issue date,
then, in addition to the royalties payable by MOTOROLA pursuant to Sections 6.2,
6.3 and 6.4 above, MOTOROLA shall pay to GENOMETRIX a royalty of ************ of
the NET SALES of the LICENSED PRODUCTS covered by such GENOMETRIX PATENT or the
OPTICAL DETECTION IP for the period of time commencing on the date of first sale
of the applicable LICENSED PRODUCT until the issue date of the applicable
GENOMETRIX PATENT or the OPTICAL DETECTION IP: (a) up to a period of time not
exceed two (2) years; and (b) if full disclosure of the applicable GENOMETRIX
PATENT was made to MOTOROLA prior to the introduction of such LICENSED PRODUCT
into the commercial marketplace; and (c) no commercial product was available
during the applicable period which product was covered by the same intellectual
property without license from GENOMETRIX, except for products made available by
a THIRD PARTY to whom GENOMETRIX has provided written notice that such product
infringes the GENOMETRIX PATENTS and/or the OPTICAL DETECTION IP.

         6.6 No multiple royalties shall be payable because any LICENSED
PRODUCT, its manufacture, use, lease, sale or import are or shall be covered by
more than one GENOMETRIX PATENT or the OPTICAL DETECTION IP licensed under this
Agreement or under the LICENSE and OPTION AGREEMENT, including UNIVERSAL ARRAY
PATENTS. All payments

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hereunder shall be paid in full, without deduction of taxes or other fees which
may be imposed by any government and which shall be paid by MOTOROLA.

         6.7 Within thirty (30) days of the close of each calendar quarter
following the EFFECTIVE DATE, MOTOROLA shall (i) deliver to GENOMETRIX a report
setting forth all LICENSED PRODUCTS sold, leased or otherwise transferred or
disposed of by MOTOROLA or its SUBSIDIARIES during such calendar quarter, which
report shall indicate the NET SALES thereof and the amount of royalties due,
including a list of all deductions therefrom, or such report shall certify that
no LICENSED PRODUCTS were sold or otherwise disposed of, and (ii) to the extent
royalties are owed, MOTOROLA shall make such royalty payments to GENOMETRIX in
accordance with this Section 6. In the case of E-FIELD PRODUCTS and OPTICAL
DETECTION PRODUCTS, the reports submitted by MOTOROLA to GENOMETRIX shall
contain the information and be in the form required of GENOMETRIX pursuant to
Article 5 of the MIT AGREEMENT.

         6.8 Within thirty (30) days of the grant of a sublicense under the
GENOMETRIX PATENTS, MOTOROLA shall deliver to GENOMETRIX a report setting forth
the type and amounts of consideration received in connection with the grant of
such sublicense, together with the amount of SUBLICENSE INCOME due GENOMETRIX
hereunder and the calculation of such amounts, and (ii) payment of all such
SUBLICENSE INCOME owed by MOTOROLA to GENOMETRIX as of such date. The foregoing
notwithstanding, to the extent all or a portion of such SUBLICENSE INCOME is
based on non-cash consideration received by MOTOROLA, GENOMETRIX and MOTOROLA
shall mutually agree in good faith to reasonable payment terms consistent with
Section 1.26; provided, that, such amount and payment terms shall be subject to
the MIT AGREEMENT and, where applicable, the consent of MIT; and provided,
further, such payment terms shall be structured in a manner whereby MOTOROLA's
payments to GENOMETRIX are consistent with the obligations of GENOMETRIX and
MOTOROLA under the MIT AGREEMENT, and any such payments to GENOMETRIX shall be
at least as great as the payments owed by GENOMETRIX to MIT pursuant to the MIT
AGREEMENT.

         6.9 Within forty-five (45) days of the close of each calendar quarter
following the EFFECTIVE DATE, MOTOROLA shall: (i) deliver to GENOMETRIX a report
setting forth all LICENSED PRODUCTS sold, leased or otherwise transferred or
disposed of by MOTOROLA's sublicensees during such calendar quarter, which
report shall indicate the NET SALES of LICENSED PRODUCTS sold by such
sublicensees, and the amount of SUBLICENSE INCOME due in connection with such
sales, including a list of all deductions therefrom, or such report shall
certify that no LICENSED PRODUCTS were sold or otherwise disposed of by
sublicensees of MOTOROLA; and (ii) deliver to GENOMETRIX a report setting forth
all other SUBLICENSE INCOME received by MOTOROLA during such calendar quarter,
which report shall indicate the amount of SUBLICENSE INCOME received by MOTOROLA
and the amount of such SUBLICENSE INCOME owed to GENOMETRIX and the calculations
therefore; and (iii) to the extent SUBLICENSE INCOME is owed to GENOMETRIX,
including SUBLICENSE INCOME based on the sale of LICENSED PRODUCTS by a
sublicensee of MOTOROLA, MOTOROLA shall make such SUBLICENSE INCOME payments to
GENOMETRIX in accordance with this Section 6. The foregoing notwithstanding, to
the extent all or a portion of such SUBLICENSE INCOME is based on

                                       19
<PAGE>   20

                                            CONFIDENTIAL MATERIAL OMITTED AND
                                            FILED SEPARATELY WITH THE SECURITIES
                                            AND EXCHANGE COMMISSION. ASTERISKS
                                            DENOTE SUCH OMISSIONS.

non-cash consideration received by MOTOROLA, payments shall be made in
accordance with the reasonable payment terms agreed upon pursuant to Section
6.8. In the case of reports of SUBLICENSE INCOME relating to the E-FIELD
MANIPULATION IP or E-FIELD PRODUCTS, the reports submitted by MOTOROLA to
GENOMETRIX shall contain the information and be in the form required of
GENOMETRIX and MOTOROLA pursuant to Article 5 of the MIT AGREEMENT.

         6.10 Payments of royalties or SUBLICENSE INCOME by MOTOROLA shall be
made in United States currency and by wire transfer to such account as
GENOMETRIX may specify in writing from time to time or by check mailed to
GENOMETRIX at the address set forth in Section 11.12. In the event of a wire
transfer, notice of payment shall be sent by MOTOROLA to GENOMETRIX's address in
Section 11.12. Conversion of foreign currency to United States currency shall be
made at the exchange rate prevailing at the Chase Manhattan Bank (N.A.) on the
last business day of the reporting period to which such royalty or SUBLICENSE
INCOME payments relate, unless otherwise agreed in writing by GENOMETRIX and
MOTOROLA.

         6.11 Any payment hereunder which shall be delayed beyond the due date
shall be subject to an interest charge at a per annum rate equal to the greater
of: (i) the prime rate in effect at the Chase Manhattan Bank (N.A.) on the due
date, or (ii) the rate which GENOMETRIX is required to pay to a THIRD PARTY
licensor, but in any event no greater than the highest rate allowed by law on
the due date. The payment of such interest shall not foreclose GENOMETRIX from
exercising any other rights it may have as a consequence of the lateness of any
payment.

         6.12 With respect to the payments set forth in this Section 6, MOTOROLA
shall keep clear and accurate records with respect to all LICENSED PRODUCTS sold
or otherwise disposed of by MOTOROLA its SUBSIDIARIES or sublicensees; provided,
that, in the case of E-FIELD PRODUCTS and OPTICAL DETECTION PRODUCTS, such
records shall meet the requirements imposed on GENOMETRIX by MIT pursuant to
Article 5 of the MIT AGREEMENT. These records shall be retained by MOTOROLA for
a period of five (5) years from the date of reporting and payment,
notwithstanding the expiration or other termination of this Agreement.
GENOMETRIX shall have the right, through an independent certified public
accountant chosen by GENOMETRIX and reasonably acceptable to MOTOROLA, and at
the expense of GENOMETRIX, to examine and audit, not more than once a year, and
during normal business hours, all such records and such other records and
accounts as may, under recognized accounting practices, contain information
bearing upon the amount of royalties and SUBLICENSE INCOME payable to GENOMETRIX
under this Agreement. Prompt adjustment shall be made by MOTOROLA to compensate
for any errors and/or omissions disclosed by such examination or audit. Should
the amount of royalties or SUBLICENSE INCOME due as determined through the audit
exceed the amount of royalties and/or SUBLICENSE INCOME reported to be due by
MOTOROLA by *********************** whichever is greater, then MOTOROLA shall
pay the full cost of the audit.

                                       20
<PAGE>   21

SECTION 7.        TERM, TERMINATION AND ASSIGNABILITY.

         7.1 The term of this Agreement shall be from the EFFECTIVE DATE until
expiration of the last patent or disallowance of the last GENOMETRIX PATENT,
patents included in the OPTICAL DETECTION IP or PROGRAM PATENT under which
MOTOROLA has obtained a license pursuant to this Agreement, unless earlier
terminated as provided elsewhere in this Agreement.

         7.2 In the event of any material breach of this Agreement by either
party hereto, if such breach is not corrected within thirty (30) days after
written notice to the breaching party in the case of a breach in the payment of
royalties or SUBLICENSE INCOME under Section 6, or within forty-five (45) days
after written notice to the breaching party for all other breaches, the
non-breaching party may, at its option terminate this Agreement.

         7.3 The parties hereto acknowledge and agree that: (a) in the event of
the termination of the MIT AGREEMENT, this Agreement shall not terminate and
MOTOROLA shall become a licensee of MIT as set forth in Section 13.6 of the MIT
AGREEMENT; and (b) in the event of the termination of the BAYLOR AGREEMENT, the
rights and obligations of MOTOROLA hereunder with respect to SURFACE CHEMISTRIES
IP and SURFACE CHEMISTRIES PRODUCTS specific to the BAYLOR AGREEMENT shall be
terminated; provided, that, GENOMETRIX shall have no objection if MOTOROLA
enters into good faith discussions with BAYLOR in order to continue its rights
and obligations under the SURFACE CHEMISTRIES IP originally licensed to
GENOMETRIX pursuant to the BAYLOR AGREEMENT.

         7.4 The rights or privileges provided for in this Agreement may be
assigned or transferred by either party only with the prior written consent of
the other party, except that either party may assign its rights under this
Agreement, with the exception of section 4, to a successor in ownership of all
or substantially all of its assets relating to the subject matter of this
Agreement.

         7.5 Sections 2.8, 2.9, 2.10, 5.1, 5.6, 5.7, Section 6 with respect to
payment and reporting obligations covering the sale, lease, transfer or
sublicensing of intellectual property, products or services prior to the
effective date of such expiration or termination, this Section 7.5, and Sections
8, 10 and 11 shall survive the expiration or termination of this Agreement. The
termination, relinquishment or expiration of this Agreement for any reason shall
be without prejudice to any rights which shall have accrued to the benefit of
either party under this Agreement prior to such termination, relinquishment or
expiration. Such termination, relinquishment or expiration shall not relieve
either party from obligations which are expressly indicated to survive
termination or expiration of this Agreement.

         7.6 To avoid cancellation of the sublicense under the SURFACE
CHEMISTRIES IP, MOTOROLA shall have the right to purchase substantially all of
the assets relating to SURFACE CHEMISTRIES IP prior to entry by GENOMETRIX into
bankruptcy or other form of liquidation which would allow BAYLOR to terminate
its license to GENOMETRIX and GENOMETRIX's sublicensee.

                                       21
<PAGE>   22

                                            CONFIDENTIAL MATERIAL OMITTED AND
                                            FILED SEPARATELY WITH THE SECURITIES
                                            AND EXCHANGE COMMISSION. ASTERISKS
                                            DENOTE SUCH OMISSIONS.

SECTION 8.        PRODUCT LIABILITY, INSURANCE AND INDEMNIFICATION.

         8.1      E-FIELD MANIPULATION IP AND OPTICAL DETECTION IP.

                  (a) In the case of E-FIELD MANIPULATION IP and E-FIELD
         PRODUCTS and OPTICAL DETECTION IP and OPTICAL DETECTION PRODUCTS,
         MOTOROLA shall at all times during the term of this Agreement and
         thereafter, indemnify, defend and hold GENOMETRIX, MIT, HARC, and
         BAYLOR, their trustees, directors, officers, employees and affiliates
         harmless against all claims, proceedings, demands and liabilities of
         any kind whatsoever, including legal expenses and reasonable attorneys'
         fees, arising out of the death of or injury to any person or persons or
         out of any damage to property, resulting from the production,
         manufacture, sale, use, lease, consumption or advertisement of E-FIELD
         PRODUCT(s) or OPTICAL DETECTION PRODUCTS(s) by MOTOROLA.

                  (b) Prior to the first use of an E-FIELD PRODUCT or an OPTICAL
         DETECTION PRODUCT for a commercial application involving human
         subjects, MOTOROLA shall obtain and carry in full force and effect
         commercial, general liability insurance which shall protect GENOMETRIX,
         MOTOROLA, MIT, HARC, and BAYLOR with respect to events covered by
         Section 8.1(a) above. Such insurance shall be written by a reputable
         insurance company authorized to do business in The Commonwealth of
         Massachusetts, shall list GENOMETRIX, MIT, HARC, and BAYLOR as
         additional named insured thereunder, shall be endorsed to include
         product liability coverage and shall require thirty (30) days written
         notice to be given to MIT, HARC, and BAYLOR prior to any cancellation
         or material change thereof. The limits of such insurance shall not be
         less than *********************** per occurrence with an aggregate of
         ***************** for personal injury or death, and *******************
         per occurrence with an aggregate of ******************** for property
         damage. MOTOROLA shall provide GENOMETRIX, MIT, HARC, and BAYLOR with
         Certificates of Insurance evidencing the same.

         8.2      SURFACE CHEMISTRIES IP.

                  (a) In the case of the SURFACE CHEMISTRIES IP and SURFACE
         CHEMISTRIES PRODUCTS, each party shall notify the other of any claim,
         lawsuit or other proceeding related to the SURFACE CHEMISTRIES IP.
         MOTOROLA agrees that it will defend, indemnify and hold harmless
         GENOMETRIX, BAYLOR, MIT, HARC, and each of their respective faculty
         members, scientists, researchers, employees, officers, trustees,
         directors, and agents and each of them (the "Indemnified Parties"),
         from and against any and all claims, causes of action, lawsuits or
         other proceedings filed or otherwise instituted against any of the
         Indemnified Parties related directly or indirectly to or arising out of
         an act or omission of MOTOROLA in the design, manufacture, use or sale
         of a SURFACE CHEMISTRIES PRODUCT, or any other embodiment of the
         SURFACE CHEMISTRIES IP.

                                       22
<PAGE>   23

                                            CONFIDENTIAL MATERIAL OMITTED AND
                                            FILED SEPARATELY WITH THE SECURITIES
                                            AND EXCHANGE COMMISSION. ASTERISKS
                                            DENOTE SUCH OMISSIONS.

                  (b) MOTOROLA shall, for so long as MOTOROLA manufactures, uses
         or sells any SURFACE CHEMISTRIES PRODUCT maintain in full force and
         effect policies of (i) worker's compensation and/or employers'
         liability insurance within statutory limits and (ii) general liability
         insurance (with Broad Form General Liability endorsement) with limits
         of not less than **************** per occurrence with an annual
         aggregate of ****************** and (iii) products liability insurance,
         with limits of not less than ******************** per occurrence with
         an annual aggregate of ******************. Such coverage(s) shall be
         purchased from a carrier or carriers reasonably acceptable to
         GENOMETRIX and BAYLOR, and shall name GENOMETRIX and BAYLOR as an
         additional insured. Upon request by GENOMETRIX, MOTOROLA shall provide
         to GENOMETRIX and/or BAYLOR copies of said policies of insurance.

SECTION 9.        WARRANTIES.

         9.1 GENOMETRIX warrants that except as otherwise set forth herein and
in the EXHIBITS attached hereto, including without limitation the MIT AGREEMENT
and the BAYLOR AGREEMENT, to the best of its knowledge it owns or has license
rights to the GENOMETRIX PATENTS, free and clear of all liens, encumbrances, and
claims or demands of THIRD PARTIES.

         9.2. Each party warrants that it has the authority to enter into this
Agreement.

         9.3. GENOMETRIX warrants that, to the best of its knowledge, EXHIBIT A
sets forth all patents or patent applications claiming E-FIELD MANIPULATION IP,
SURFACE CHEMISTRIES IP and OPTICAL DETECTION IP owned, controlled, or licensed
by GENOMETRIX as of the EFFECTIVE DATE. To the best of GENOMETRIX's knowledge,
all patents listed in EXHIBIT A are valid and in full force and all patent
applications listed therein as pending have been prosecuted in good faith as
required by law and are in good standing. To the best knowledge of GENOMETRIX,
none of the patents or patent applications listed in EXHIBIT A is involved in
any interference or opposition proceeding, and there has been no written notice
received by GENOMETRIX that such proceeding will hereafter be commenced.

         9.4 GENOMETRIX warrants that, to the best of its knowledge as of the
EFFECTIVE DATE, its licenses with MIT and BAYLOR are in good standing and that
as of the EFFECTIVE DATE it has satisfied the 1998 minimum sales requirements
set forth in the MIT AGREEMENT in order to maintain the MIT Exclusivity Period
(as defined in Section 3.1 hereof), and that it is capable of satisfying the
minimum sales requirements for 1999 in order to maintain the MIT Exclusivity
Period.

         9.5 GENOMETRIX warrants that, to the best of its knowledge as of the
EFFECTIVE DATE, it has no knowledge or information that practice of the E-FIELD
MANIPULATION IP, the SURFACE CHEMISTRIES IP, the UNIVERSAL ARRAY IP or the
OPTICAL DETECTION IP constitutes infringement of any third party patents.

                                       23
<PAGE>   24

         9.6 EXCEPT AS OTHERWISE EXPRESSLY SET FORTH IN THIS AGREEMENT,
GENOMETRIX, ITS TRUSTEES, DIRECTORS, OFFICERS, EMPLOYEES AND SUBSIDIARIES MAKE
NO REPRESENTATIONS AND EXTEND NO WARRANTIES OF ANY KIND, EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
PARTICULAR PURPOSE, VALIDITY OF THE GENOMETRIX PATENTS, CLAIMS, ISSUED OR
PENDING, AND THE ABSENCE OF LATENT OR OTHER DEFECTS, WHETHER OR NOT
DISCOVERABLE. NOTHING IN THIS AGREEMENT SHALL BE CONSTRUED AS A REPRESENTATION
MADE OR WARRANTY GIVEN BY GENOMETRIX THAT THE PRACTICE BY MOTOROLA OF THE
LICENSES GRANTED HEREUNDER SHALL NOT INFRINGE THE PATENT RIGHTS OF ANY THIRD
PARTY. EXCEPT AS EXPRESSLY STATED HEREIN, IN NO EVENT SHALL GENOMETRIX, ITS
TRUSTEES, DIRECTORS, OFFICERS, EMPLOYEES OR SUBSIDIARIES BE LIABLE FOR
INCIDENTAL OR CONSEQUENTIAL DAMAGES OF ANY KIND, INCLUDING ECONOMIC DAMAGE OR
INJURY TO PROPERTY AND LOST PROFITS.

SECTION 10.       CONFIDENTIALITY.

         10.1 CONFIDENTIAL INFORMATION means any materials or information
provided by a party (the "Disclosing Party") to the other party (the "Receiving
Party"), regardless of whether such information is provided in written, oral,
electronic or other form, except that CONFIDENTIAL INFORMATION shall not include
information or materials which:

         (a)      are in possession of the Receiving Party at the time of
                  disclosure thereof as demonstrated by prior written records;

         (b)      are or later become part of the public domain through no fault
                  of the Receiving Party;

         (c)      are received by the Receiving Party from a THIRD PARTY having
                  a lawful right to disclose same and having no obligation of
                  confidentiality to the Disclosing Party with respect thereto;

         (d)      are developed independently by the Receiving Party without use
                  of or access to the Confidential Information, as evidenced by
                  competent written records; or

         (e)      are required by law or regulation to be disclosed; provided,
                  however, that the Receiving Party has provided prompt, advance
                  written notice to the Disclosing Party so as to enable the
                  Disclosing Party to seek a protective order or otherwise
                  prevent disclosure of such Confidential Information.

                                       24
<PAGE>   25

         10.2 The Receiving Party agrees that the CONFIDENTIAL INFORMATION of
the Disclosing Party shall be maintained in strict confidence and shall not be
disclosed, divulged or otherwise communicated by the Receiving Party to any
THIRD PARTY or used by the Receiving Party or any THIRD PARTY for any purposes
other than as expressly provided in this Agreement.

         10.3 Neither party shall issue any press release or make any public
announcement relating to this Agreement without the prior written approval of
the other party.

SECTION 11        MISCELLANEOUS PROVISIONS.

         11.1 MOTOROLA shall at all times during the term of this Agreement and
for so long as it shall practice the GENOMETRIX PATENTS or the OPTICAL DETECTION
IP, or develop, make, use or sell LICENSED PRODUCTS, comply with all laws that
may control the import, export, manufacture, use, sale, marketing, distribution
and other commercial exploitation of LICENSED PRODUCTS or any other activity
undertaken pursuant to this Agreement.

         11.2 Nothing contained in this Agreement shall be construed as:

                  (a)      conferring any license or other right, by
                           implication, estoppel or otherwise, under any patent
                           application, patent or patent right, except as herein
                           expressly granted; or

                  (b)      conferring any license or right with respect to any
                           trademark, trade or brand name, a corporate name of
                           any party, or any other name or mark, or contraction,
                           abbreviation or simulation thereof.

         11.3 No express or implied waiver by either of the parties to this
Agreement of any breach of any term, condition or obligation of this Agreement
by the other party shall be construed as a waiver of any subsequent breach of
that term, condition or obligation or of any other term, condition or obligation
of this Agreement of the same or of a different nature.

         11.4 This Agreement is the result of negotiation between the parties
and, accordingly, shall not be construed for or against either party regardless
of which party drafted this Agreement or any portion thereof.

         11.5 Nothing in this Agreement shall be construed as creating a
partnership, joint venture, or other formal business organization of any kind.

         11.6 Except as expressly stated herein, in no event shall either party
be liable to the other party by reason of this Agreement or any breach or
termination of this Agreement for any loss of prospective profits or incidental
or special or consequential damages.

                                       25
<PAGE>   26

         11.7 The headings and captions used in this Agreement are for
convenience only, and are not to be used in interpreting the obligations of the
parties under this Agreement.

         11.8 GOVERNING LAW.

                  (a) To the extent required by the BAYLOR AGREEMENT, the
         performance of this Agreement as it relates to rights and licenses
         granted under the SURFACE CHEMISTRIES IP shall be subject to, made
         under, and shall be construed and interpreted in accordance with the
         laws of the State of Texas, and no conflict-of-laws rule or law that
         might refer such construction and interpretation to the laws of another
         state, republic, or country shall be considered. To the extent required
         by the BAYLOR AGREEMENT, this Agreement is performable in part in
         Harris County, Texas, and the parties mutually agree that, to the
         extent required by the BAYLOR AGREEMENT, personal jurisdiction and
         venue shall be proper in the state and federal courts situated in
         Harris County, Texas, and, to the extent required by the BAYLOR
         AGREEMENT, agree that any litigated dispute relating to the SURFACE
         CHEMISTRIES IP or SURFACE CHEMISTRIES PRODUCTS will be conducted solely
         in such courts.

                  (b) To the extent required by the MIT AGREEMENT, this
         Agreement, as it relates to rights and licenses granted under the
         E-FIELD MANIPULATION IP and the OPTICAL DETECTION IP, shall be
         construed, governed, interpreted and applied in accordance with the
         laws of the Commonwealth of Massachusetts, U.S.A., except that
         questions affecting the construction and effect of any patent shall be
         determined by the law of the country in which the patent was granted.

                  (c) In all cases not covered by Sections 11.8(a) and 11.8(b)
         above, the performance of this Agreement as it relates to rights and
         licenses granted to MOTOROLA shall be subject to, made under, and shall
         be construed and interpreted in accordance with the laws of the State
         of Delaware.

         11.9 DISPUTE RESOLUTION.

                  (a) Disputes relating to the E-FIELD MANIPULATION IP and
         E-FIELD PRODUCTS and OPTICAL DETECTION IP and OPTICAL DETECTION
         PRODUCTS shall be governed by the provisions of this Section 11.9(a).
         Except for the right of either party to apply to a court of competent
         jurisdiction for a temporary restraining order, a preliminary
         injunction, or other equitable relief to preserve the status quo or
         prevent irreparable harm, any and all claims, disputes or controversies
         arising under, out of, or in connection with this Agreement, including
         any dispute relating to patent validity or infringement, which the
         parties shall be unable to resolve within sixty (60) days shall be
         mediated in good faith. The party raising such dispute shall promptly
         advise the other party of such claim, dispute or controversy in a
         writing which describes in reasonable detail the nature of such
         dispute. If the parties are unable to resolve such dispute within such
         sixty (60) day period, either party may demand mediation by written
         notice to the other party. By not later than ten (10) business days
         after the recipient has received such

                                       26
<PAGE>   27

         demand for mediation, each party shall have selected for itself a
         representative who shall have the authority to bind such party, and
         shall additionally have advised the other party in writing of the name
         and title of such representative. By not later than twenty (20)
         business days after the date of such demand for mediation, the party
         against whom the dispute shall be raised shall select a mediation firm
         in the Boston area which is acceptable to the other party (which
         acceptance shall not be unreasonably withheld) and such representatives
         shall schedule a date with such firm for a mediation hearing. Within
         thirty (30) days after the selection of the mediation firm, the parties
         shall enter into good faith mediation and shall share the costs
         equally. If the representatives of the parties have not been able to
         resolve the dispute within fifteen (15) business days after such
         mediation hearing, the parties shall have the right to pursue any other
         remedies legally available to resolve such dispute in either the courts
         of The Commonwealth of Massachusetts or in the United States District
         Court for the District of Massachusetts, to whose jurisdiction for such
         purposes GENOMETRIX and MOTOROLA each hereby irrevocably consents and
         submits. Notwithstanding the foregoing, nothing in this Section 11.9(a)
         shall be construed to waive any rights or timely performance of any
         obligations existing under this Agreement.

                  (b) Disputes arising out of this Agreement and not covered by
         Section 11.9(a) above shall be governed by this Section 11.9(b). The
         parties agree to attempt to settle all such disputes amicably between
         them. The parties agree that any such dispute (other than relating to
         the scope or validity of a patent and other than a dispute that is
         covered by Section 11.9(a) above, will be submitted to non-binding
         arbitration in a mutually agreeable location in accordance with the
         commercial rules and procedures of the American Arbitration
         Association, before a single arbitrator who will be reasonably familiar
         with the relevant industry. Each party shall pay its own costs in
         connection with such arbitration and one half of the fees of the
         arbitrator While the parties agree to attempt arbitration in good
         faith, nothing in this Section 11.9(b) shall be construed as limiting
         the rights of either party to take legal action as it deems necessary
         to enforce its rights under this Agreement.

         11.10 If any term, clause, or provision of this Agreement shall be
judged to be invalid, the validity of any other term, clause, or provision shall
not be affected, and such invalid term, clause, or provision shall be deemed
deleted from this Agreement.

         11.11 This Agreement, including the EXHIBITS attached hereto and
incorporated herein by reference, sets forth the entire agreement and
understanding between MOTOROLA and GENOMETRIX as to the subject matter hereof,
and supersedes and merges any and all prior discussions, correspondence,
agreements or understandings between the parties with respect to such matters,
including without limitation (i) the Non-Disclosure Agreement by and between the
parties and dated June 2, 1998; (ii) the Memorandum of Understanding dated
November 4, 1998, and (iii) the Memorandum of Understanding dated June 24, 1999.
In addition, with respect to the E-FIELD MANIPULATION IP and the SURFACE
CHEMISTRIES IP, except where expressly set forth herein, the rights and licenses
granted to MOTOROLA pursuant to the LICENSE AND OPTION AGREEMENT with respect to
the E-FIELD MANIPULATION IP and E-FIELD

                                       27
<PAGE>   28

PRODUCTS, and with respect to the SURFACE CHEMISTRIES IP and SURFACE CHEMISTRIES
PRODUCTS are terminated. This Agreement expressly supersedes the LICENSE AND
OPTION AGREEMENT with respect to the E-FIELD MANIPULATION IP and E-FIELD
PRODUCTS and the SURFACE CHEMISTRIES IP and SURFACE CHEMISTRIES products, and in
the event of any inconsistency between this Agreement and the LICENSE AND OPTION
AGREEMENT with respect to such IP and PRODUCTS, the provisions of this Agreement
shall prevail. Neither party shall be bound by any conditions, definitions,
warranties, understandings or representations with respect to such subject
matter other than as expressly provided herein (including the EXHIBITS attached
hereto and incorporated herein by reference) or as duly set forth on or
subsequent to the date hereof in writing and signed by a proper and duly
authorized official of the party to be bound thereby.

         11.12 All notices required or permitted to be given hereunder shall be
in writing and shall be valid and sufficient if dispatched by registered mail,
postage prepaid, in any post office in the United States, or by recognized
courier service providing evidence of receipt, addressed as follows:

      If to MOTOROLA to:     MOTOROLA, Inc.
                             1303 East Algonquin Road
                             Schaumberg, Illinois 60062
                             Attention: Vice President for
                             Patents, Trademarks & Licensing

      With a copy to:        MOTOROLA, Inc.
                             4088 Commercial Avenue
                             Northbrook, IL 60062
                             Attention: Director of Contracts

      If to GENOMETRIX to:   Genometrix Incorporated
                             3608 Research Forest Drive, Suite B7
                             The Woodlands, Texas 77381
                             Attention: Mitchell D. Eggers, Ph.D.
                             Chief Executive Officer

      With a copy to:        Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C.
                             One Financial Center
                             Boston, MA 02111
                             Attention:  Michael R. B. Balfe, Esq.

         11.13 The date of receipt of such a notice shall be the date for the
commencement of the running of the period provided for in such notice, or the
date at which such notice takes effect, as the case may be.

         11.14 For the term of this Agreement, and for one (1) year after the
expiration or termination of this Agreement, MOTOROLA agrees not to solicit any
employees of

                                       28
<PAGE>   29

GENOMETRIX without the prior written consent of GENOMETRIX, except through
advertisements and solicitations directed to the market generally. For the term
of this agreement, and for one (1) year after the expiration or termination of
this Agreement, GENOMETRIX agrees not to solicit any employees of MOTOROLA
BioChip Systems without the prior written consent of MOTOROLA, except through
advertisements and solicitations directed to the market generally.

                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

                                       29
<PAGE>   30

         In witness whereof, each party hereto has caused this Agreement to be
executed by its duly authorized representatives:

MOTOROLA, INC.                                       GENOMETRIX INCORPORATED

By:/s/ Nicholas Naclerio                       By:/s/ Mitchell D. Eggers
       Nicholas Naclerio                              Mitchell D. Eggers, Ph.D.
       Vice President and General Manager             Chief Executive Officer

By:/s/ F. John Motsinger
       F. John Motsinger
Title: Corporate Vice President,
       Assistant General Counsel,
       and Director of Patents,
       Trademarks and Licensing

                                       30
<PAGE>   31

                                    EXHIBIT A

                               GENOMETRIX PATENTS

1.       E-FIELD MANIPULATION IP.
         ------------------------

         U.S. 5,891,630
         Issued 4/6/99

         EPC 0543550
         Issued 1/27/99

         U.S. 5,846,708
         Issued 12/18/98

         U.S. 5,653,939
         Issued 8/5/97

         U.S. 5,670,322
         Issued 9/23/97

         U.S. 5,532,128
         Issued 7/2/98

         USSN 08/511,649
         Filed 8/7/95

         USSN 07/872,582
         Filed 4/23/92

         USSN 07/794,036
         Filed 11/19/91

         USSN 08/353,957
         Filed 12/12/94

         USSN 08/457,096
         Filed 6/1/95

         USSN 08/633,861
         Filed 4/15/96

         WO 93/22678
         Filed 11/11/93

                                      A-1
<PAGE>   32

         PCT/US93/03829
         Filed 4/23/92

         EPC 92310253.7
         Filed 11/10/92

2.       SURFACE CHEMISTRIES IP.
         -----------------------

         USSN 08/749,967
         Filed 11/14/97

         USSN 60/006,697
         Filed 11/14/95

         PCT/US96/18,212
         Filed 11/14/96

         European 96938841.2
         Filed 11/14/96

         Canada 2235762
         11/14/96

         Japanese 09-519045
         Filed 11/14/96

                                      A-2
<PAGE>   33

                                    EXHIBIT B

                                  MIT AGREEMENT

                                      B-1
<PAGE>   34

                                    EXHIBIT C

                                BAYLOR AGREEMENT

                                      C-1
<PAGE>   35

                                    EXHIBIT D

                 REPRESENTATIVE CLAIMS OF THE GENOMETRIX PATENTS

                        EXISTING AS OF THE EFFECTIVE DATE

1.       REPRESENTATIVE CLAIMS OF THE GENOMETRIX PATENTS MEETING THE CRITERIA
         FOR E-FIELD MANIPULATION IP.

         (a)      Claims 1-10, 17-19, 14-15, 16 and 39 of United States Patent
                  Number 5,653,939;

         (b)      Claims 1-5, 10-12, 15-16, 19-33, and 42-43 of United States
                  Patent Number 5,846,708;

         (c)      All claims of United States Patent Number 5,670,322;

         (d)      All claims of United States Patent Number, 5,532,128;

         (e)      Claim 70 of GENOMETRIX's United States patent application USSN
                  09/002,170;

         (f)      All claims of United States Patent Number 5,891,630; and

         (g)      All claims of European Patent Number 0543550.

2.       REPRESENTATIVE CLAIMS OF THE GENOMETRIX PATENTS MEETING THE CRITERIA
         FOR SURFACE CHEMISTRIES IP.

         Claims 1-21 of the GENOMETRIX PATENT licensed to GENOMETRIX from BAYLOR
         and having United States Patent Application Serial No. 08/749,967 and
         entitled "Integrated Nucleic Acid Hybridization Devices Based Upon
         Active Surface Chemistry."

                                      D-1
<PAGE>   36
                                                  CONFIDENTIAL MATERIAL
                                            OMITTED AND FILED SEPARATELY WITH
                                            THE SECURITIES AND EXCHANGE
                                            COMMISSION. ASTERISKS DENOTE SUCH
                                            OMISSIONS.

                                    EXHIBIT E

                         ***************** RESEARCH PLAN

                        MOTOROLA SPONSORED RESEARCH PLAN

OBJECTIVE: ESTABLISHMENT OF FEASIBILITY OF ADAPTATION OF HYBRIDIZATION
ENHANCEMENT CHEMISTRIES TO THE MOTOROLA BIOCHIP GEL PAD PLATFORM.

BACKGROUND

Genometrix has developed proprietary ********************* which enhance the
************* process by ************* the ******************** of target -
****************************** by ******* than a factor of *** relative to
non-modified **********************. Such modifications may be ********* by
********************, in a range which is *************** to the ************
*****************************. In addition, such modifications may be made in a
************, allowing the *********** process to occur only at the *****
******* in a *****************. Further, such ******* modifications allow the
********* of ***************** in the ********* in the area of the *****
*********** to screen the ******************************************************
which is necessary for specific **************** by ****************. This
latter observation allows ************* to ***** in a ******************** of
essentially ***************************** any ******* or *******************
*********** which may compromise binding of *************************** in
traditional ************* buffers containing supporting ***********************.

RESEARCH OUTLINE

-    APPLICATION OF *************************** TO *** MATRICES

     Investigation of the feasibility of ********** of ******* components into
     the **************** will follow essentially two strategies. In the first,
     the *************** may be implemented as part of the *************** upon
     which the ******* containing ***** molecules is *********. Such a *******
     may in fact be designed to have some ********************** which allow
     *********** of the active ********** into the **********. It is predicted
     that the efficacy of such modifications will be dependent upon the relative
     ******** between the ************************* and potential ************
     ********, as well as the *********** component of ******************* the
     **********.

     A second strategy will be to implement **************** into the ***
     itself. A variety of ****************** components have been tested at
     Genometrix and have been shown to have beneficial, ***********************
     properties. ***************** of ********* of this type

                                      E-1
<PAGE>   37
                                                    CONFIDENTIAL MATERIAL
                                            OMITTED AND FILED SEPARATELY WITH
                                            THE SECURITIES AND EXCHANGE
                                            COMMISSION. ASTERISKS DENOTE SUCH
                                            OMISSIONS.

     may have an added advantage in normalizing the *********************** of
     ************ within the ***. Along the same lines, active ********** may be
     introduced into the ******************* itself by derivitization of
     **************************.

-    EVALUATION OF *********** AND ********************* OF CANDIDATE SURFACES

     *********** model systems have been developed at Genometrix to evaluate
     ******* components of the ************* process. Such systems also
     incorporate the ability to evaluate both **************** as well as
     *********** by the incorporation of ******************* of every type at
     ************* on the ***************. *********************** libraries
     exist as both small *****************, *************, ********************
     ***********.

     It is proposed that all **************************** be evaluated
     *********** using such a model system. Potential *********** strategies of
     ******************** will be compared to existing modified and unmodified
     *************** developed at Genometrix.

-    FEASIBILITY OF USING ******************* TO REPLACE **************

     If it is determined that the *********** component of **************
     ******** limits the functionality ********************, other *******
     ******** may be evaluated which may be less restrictive. A variety of
     ****************** exist for which it is possible to both ***********
     *********** as well as ********************** with ***********************
     *********. Such supports may be systematically evaluated as outlined above
     using model systems allowing ******************** as well as determinations
     of **************** and *********** in the context of ***********
     *************.

The level of effort consists of ***************** working for a period of 6
months under the direction of ************************. Interaction among the
investigators at Motorola and Genometrix and the reporting activities will be
governed by the LICENSE AND RESEARCH AGREEMENT.

                                      E-2
<PAGE>   38
                                                  CONFIDENTIAL MATERIAL
                                            OMITTED AND FILED SEPARATELY WITH
                                            THE SECURITIES AND EXCHANGE
                                            COMMISSION. ASTERISKS DENOTE SUCH
                                            OMISSIONS.

                                  CONFIDENTIAL

                                    EXHIBIT F
                             THIRD PARTIES WITH WHOM
                      GENOMETRIX HAS PREVIOUSLY NEGOTIATED

          ************     ******* of  SUBLICENSE  INCOME  for the field of
                           E-FIELD MANIPULATION IP, (specifically for claims 16
                           and 39 of United States Patent Number 5,653, 939).
                           SUBLICENSE INCOME shall not exceed the following
                           aggregate consideration: ************************ for
                           the term of the sublicense (not to exceed the life of
                           the applicable patent claims); and
                           *********************; provided, that, the foregoing
                           consideration is documented in a bonafide offer
                           *********** GENOMETRIX and reviewed by a mutually
                           agreed upon THIRD PARTY.

                           The cash value or fair market value of sublicensing
                           terms agreed upon may be ********************* those
                           discussed previously between *******************
                           GENOMETRIX, due to differences in the degree of
                           ******************** or other market factors. The
                           foregoing notwithstanding, the parties recognize and
                           agree that in the event MOTOROLA negotiates an
                           agreement ******************* with terms
                           substantially the same as the terms previously
                           negotiated between GENOMETRIX ***************,
                           GENOMETRIX shall realize ********************** the
                           maximum aggregate consideration, as set forth above.

          *************    ******* SUBLICENSE INCOME
                           E-FIELD MANIPULATION IP and
                           SURFACE CHEMISTRIES IP

         *************     ******* SUBLICENSE INCOME
                           E-FIELD MANIPULATION IP

         *************     ******* SUBLICENSE INCOME
                           E-FIELD MANIPULATION IP and
                           SURFACE CHEMISTRIES IP

                                      F-1
<PAGE>   39

                                    EXHIBIT G

                          LICENSE AND OPTION AGREEMENT

                                      G-1

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