ONCOGENE SCIENCE INC
10-K, 1995-12-20
IN VITRO & IN VIVO DIAGNOSTIC SUBSTANCES
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<PAGE>   1
                                   FORM 10-K

                       SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C.  20549


(Mark One)

  /X/  Annual report pursuant to Section 13 or 15(d) of the Securities Exchange
       Act of 1934 (Fee Required)

  For fiscal year ended September 30, 1995 or
                        ------------------

  / /  Transition report pursuant to Section 13 or 15(d) of the Securities
       Exchange Act of 1934 (No Fee Required)

  For the transition period from               to

  Commission file number           0-15190          
                        -----------------------------

                                 ONCOGENE SCIENCE, INC.                     
- --------------------------------------------------------------------------------
             (Exact Name of Registrant as Specified in its Charter)

           Delaware                                             13-3159796      
- -------------------------------                         ------------------------
(State or Other Jurisdiction of                             (I.R.S. Employer
Incorporation or Organization)                             Identification No.)
                                                   
106 Charles Lindbergh Blvd., Uniondale, N.Y.                      11553         
- --------------------------------------------            ------------------------
(Address of Principal Executive Offices)                        (Zip Code)


                                 516-222-0023
- --------------------------------------------------------------------------------
              (Registrant's Telephone Number, Including Area Code)


Securities registered pursuant to Section 12(b) of the Act:

                                                           Name of Each Exchange
Title of Each Class                                        on Which Registered
      NONE                                                        NONE         
- -------------------                                        --------------------


Securities registered pursuant to Section 12(g) of the Act:

                         Common Stock, $.01 par value
- --------------------------------------------------------------------------------
                                (Title of Class)

         Indicate by check mark whether the registrant:  (1) has filed all
reports required to be filed by Section 13 or 15(d) of the Securities Exchange
Act of 1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days.          Yes     X      No 
                                                       ---------     ---------

         Indicate by check mark if disclosure of delinquent filers pursuant to
Item 405 of Regulation S-K is not contained herein, and will not be contained,
to the best of registrant's knowledge, in definitive proxy or information
statements incorporated by reference in Part III of this Form 10-K or any
amendment to this Form 10-K.  / /

         As of November 30, 1995, the aggregate market value of the
Registrant's voting stock held by non-affiliates was $108,209,294.  For
purposes of this calculation, shares of Common Stock held by directors,
officers and stockholders whose ownership exceeds five percent of the Common
Stock outstanding at November 30, 1995 were excluded.  Exclusion of shares held
by any person should not be construed to indicate that such person possesses
the power, direct or indirect,  to direct or cause the direction of the
management or policies of the registrant, or that such person is controlled by
or under common control with the registrant.

         As of November 30, 1995 there were 17,689,042 shares of the
Registrant's $.01 par value common stock outstanding.

                      DOCUMENTS INCORPORATED BY REFERENCE

         Portions of the Registrant's Proxy Statement to be filed not later
than 120 days after September 30, 1995 in connection with the Registrant's 1996
Annual Meeting of stockholders are incorporated by reference into Part III of
this report.

Total Number of Pages:                                    Exhibit Index at Page:
<PAGE>   2
                                     PART I

ITEM 1.  BUSINESS

GENERAL

     Oncogene Science, Inc.(the "Company") is a biopharmaceutical company
engaged in the discovery and development of drugs for the treatment of cancer,
cardiovascular disease, and other human diseases associated with abnormalities
of cell growth and control.  By virtue of its development and automation of
human cell-based, high throughput drug screens and its novel approach to
identifying lead compounds as clinical development candidates through
cell-based gene transcription screens, the Company is recognized as a world
leader in drug discovery technology.  The Company's objective is to be a
leading fully-integrated drug discovery company whose collaborative partners
and pipeline of novel pharmaceutical products provides a high probability of
achieving long-term, profitable growth.

     The Company's principal approach to the development of therapeutics is the
identification of compounds that act at the level of gene transcription.  Gene
transcription is the process by which genes signal cells to produce or stop
producing particular cellular proteins such as enzymes.  The Company believes
that its proprietary gene transcription technology will lead to the development
of novel, orally-active small molecular weight pharmaceuticals.  These drugs
act upon target genes to modulate up or down, on or off, the expression of
proteins that are therapeutically relevant to specific diseases.

     The Company pursues its drug discovery and development objectives through
collaborations with pharmaceutical companies and through independent,
proprietary programs.  Currently the Company is conducting collaborative
programs with four major pharmaceutical companies, Pfizer Inc. ("Pfizer"),
Ciba-Geigy Limited ("Ciba"), Wyeth-Ayerst Research, a division of American Home
Products Corporation ("Wyeth"), and Hoechst Marion Roussel Inc. (together with
its predecessors, "HMRI").

     The Company's cancer therapeutics program is focused on the development of
novel pharmaceuticals for the treatment of cancer in humans by either
inhibiting oncogenes or restoring the activity of tumor suppressor genes.
Oncogenes are a class of genes that, upon activation, play a key role in the
conversion of otherwise normal cells to a cancerous state.  The inactivation
through mutation or deletion of tumor suppressor genes is associated with the
creation or spread of cancerous tumors.  Additionally, the Company is engaged
in the clinical development of pharmaceuticals that decrease the toxic effects
of existing chemotherapeutic agents on non-cancerous cells.  The Company also
has a research program in





                                                                               2
<PAGE>   3
cancer diagnostics focused upon the development of tests for the detection of
cancer in serum and tissue.

     The Company is collaborating with Pfizer in the development of cancer
therapeutic products.  This program currently focuses on inhibitors for various
oncogenes that have been implicated in breast, lung, colon and ovarian cancers,
and compounds that enhance tumor suppressor genes, including p53, the
inactivation of which has been implicated in lung, breast and colon cancers.
Additionally, the Company is working with Ciba in the clinical development of
the protein-based drug TGF-Beta3 for the treatment of oral mucositis, a toxic
side effect of chemotherapy.  The Company's collaboration with Ciba also
involves the development of TGF-Beta3 products for certain other indications,
such as wound healing.  The Company is involved in a collaborative program with
Wyeth to develop transcription-based drugs for diabetes, asthma, osteoporosis
and immune modulation.  Further, the Company is engaged in various joint
programs with HMRI.  The first of these involves the development of
gene-transcription based drugs to treat certain indications in the areas of
inflammation, arthritis and metabolic diseases.  An additional HMRI program
focuses on the development of gene transcription-based drugs to treat
Alzheimer's disease.  Finally, the Company commenced a collaborative program
with Marion Merrell Dow Inc. ("Marion") to develop drugs for a variety of
cardiovascular indications prior to HMRI's acquisition of Marion in July, 1995.
Based on discussions with HMRI, the Company believes that its collaborative
programs with HMRI and Marion will be consolidated and continued. The Company
also is working with Becton Dickinson and Co., Inc.  ("Becton") to develop
cancer diagnostic products.  See "--Pharmaceuticals--Gene Transcription-Based
Drugs" and "--Cancer Diagnostics."

     In addition to its collaborative programs, the Company is engaged in
various proprietary drug discovery and development programs.  The main thrust
of the Company's proprietary efforts currently is the identification and
clinical development of compounds that induce the cellular production of
Erythropoietin ("Epo") for the treatment of anemias.  Secondarily, the Company
also is pursuing gene transcription-based therapeutics in the areas of sickle
cell disease (and other hematological disorders), muscular dystrophy and
certain other indications.  The Company believes certain of its proprietary
discovery and development programs present opportunities to participate in
niche markets not typically addressed by the mainstream pharmaceutical industry
and also to advance novel therapies into clinical arenas where disease needs
are largely unmet.

     The Company's research activities since inception have resulted in the
development of extensive know-how and proprietary technologies in the areas in
which the Company has operated.  To date, the Company has filed more than 102
U.S. patent applications and over 132 foreign patent applications.  The Company
has not





                                                                               3
<PAGE>   4
obtained FDA approval for any of its human therapeutic products, and does not
expect any of such products to be commercially available for at least four
years.  The Company has obtained FDA approval for one of its cancer diagnostic
products, but does not expect any of its other diagnostic products to be
commercially available for two to three years.

     The Company was incorporated in Delaware in March 1983.  In October 1991
the Company acquired the assets of Applied bioTechnology, Inc. (a private
company) related to the research and development of cancer diagnostic and
therapeutic products based on oncogenes and tumor suppressor genes.  Until
August 1995, the Company was engaged in the development, manufacture and
marketing of products for the basic and clinical research markets.  In August
1995 the Company sold certain of the assets, and all of the business, of its
Research Products Business.

                                PHARMACEUTICALS

     CANCER

     Anti-Cancer Drugs - Collaboration with Pfizer

     The Company is actively involved in the development of drugs that
specifically inhibit functional activities associated with certain
oncogene-encoded proteins.  For example, studies have implicated ras encoded
proteins in cancers of the lung, colon and pancreas, three of the most common
fatal cancers in the Western World.  The neu/erb B2 oncogene has been
implicated in breast and ovarian cancers, and studies have indicated that a
high level of expression of neu/erb B2 encoded protein in a tumor correlates
with poor patient prognosis.  The Company's approach to the discovery of drugs
which inhibit oncogene-encoded proteins involves a screening methodology that
utilizes proprietary live cell assays to identify compounds that inactivate
oncogene-encoded proteins.  Several compounds already have been identified, and
the Company now is investigating their mechanism of action.

     A second family of cellular genes involved in the development of cancer
has also been defined.  These genes, designated as tumor suppressor genes, or
anti-oncogenes, encode proteins that generally function to block the
proliferative growth of particular cell types.  A loss of function of certain
tumor suppressor genes can result in uncontrolled cell growth and thus
contribute to the neoplastic state of a cancer cell.  One such tumor suppressor
gene is the p53 tumor suppressor gene.  Research has shown that deletions or
mutations in this gene are among the most common genetic aberrations in human
cancer.  In addition, such research has shown that the re-introduction of the
normal p53 gene into cancer cells results in an inhibition of cell growth.  The
p53 anti-oncogene has been implicated in a significant percentage of breast,
colon, gastric and lung tumors, as well as melanomas.  The





                                                                               4
<PAGE>   5
Company has developed novel assays and rapid biochemical screening procedures
for the identification of potential drugs which may restore the functional
balance of the p53 and other tumor suppressor genes.

     Pursuant to a Collaborative Research Agreement effective as of April 1,
1991 (which renewed and extended the original collaborative research programs),
the Company and Pfizer are jointly pursuing the discovery and development of
cancer therapeutic products that target oncogenes and anti-oncogenes.  The
Company expects this agreement to be renewed under substantially the same terms
effective April 1, 1996.

     Currently, the Company's work with Pfizer focuses on eight target
proteins.  Additional target proteins are being worked on under the program at
Pfizer.  In 1995, the Company's screening program resulted in the
identification of a proprietary inhibitor of the epidermal growth factor
receptor ("EGFR"), a protein associated with head, neck, breast and bladder
cancers.  Under this collaboration, this compound was nominated for and
accepted as a candidate for clinical development.  Pfizer is currently
conducting pre-Introductory New Drug Application ("IND") safety and toxicity
studies on this compound.

     The Company has recently initiated a new very high throughput screening
("VHTS") technique for the assays focussing on the Pfizer targets.  VHTS will
allow the company to perform assay screens on more than 360,000 test compounds
per robotic system per eight-week period.

     TGF-Beta3 - Collaboration with Ciba

     The Company entered into an agreement with Ciba on April 19, 1995
expanding the scope of the two companies' collaborative efforts with respect to
TGF-Beta3. This agreement grants to Ciba, in exchange for royalty payments and
certain other cash payments described below, an exclusive license to
manufacture, use and sell TGF-Beta3 products for oral mucositis and certain
other indications, including wound healing and psoriasis, throughout the world.
Under this agreement, the Company will fund oral mucositis Phase I clinical
trials and Ciba will fund Phase II and III clinical trials.  The Company hopes
to file an IND in early 1996, leading to clinical trials for oral mucositis in
1996, although there can be no assurance that this schedule will be met.  In
connection with the agreement, Ciba purchased 909,091 shares of the Company's
common stock at $5.50 per share for an aggregate purchase price of $5,000,000.
In addition, Ciba will pay the Company $10,000,000 if, and at the time, it
decides to initiate Phase IIb or III clinical trials for oral mucositis.  In
exchange for such payment, Ciba's license will be expanded to cover all other
indications for TGF-Beta3.  Alternatively, Ciba may exercise an option within
four years to expand its license under the agreement to cover all indications
for 





                                                                               5
<PAGE>   6
TGF-Beta3 by making the $10,000,000 payment.  Under the agreement, Ciba will
supply the Company will all of its developmental and commercial requirements
for TGF-Beta3.

     Oral Mucositis.  Oral mucositis is a painful, often debilitating condition
characterized by mouth and throat lesions that frequently occur as side effects
of chemotherapy.  Most chemotherapeutic agents exert their lethal effects
primarily against cancerous cells undergoing active growth.  Chemotherapeutic
agents also attack normal cells that are subject to rapid division, such as the
epithelial cells lining the mouth and gastrointestinal tract.  TGF-Beta3, a
growth regulatory protein discovered by researchers at the Company, selectively
inhibits the growth of specific cell types.  The Company has developed
formulations based on TGF-Beta3 as a chemoprotectant to inhibit temporarily the
high proliferative growth rate of certain cells in the mouth and
gastrointestinal tract.  The objective for using TGF-Beta3 is to reduce the
toxicity associated with the use of chemotherapeutic agents.  If successful,
this strategy may ultimately permit the use of more aggressive chemotherapy
dose regimens.

     Wound Healing.  In addition to its program for the development of
TGF-Beta3 to treat oral mucositis, the Company is collaborating with Ciba in
the development of TGF-Beta3 in an application to promote wound healing.  In
September 1994, Ciba initiated and successfully completed a Phase I safety
trial in Europe using a topical form of TGF-Beta3 in healthy volunteers.  Ciba
has completed a Phase I clinical trial in the United States and expects to
initiate Phase II trials in the United States and Europe in early 1996 (as to
which there can be no assurance).

     Other Indications.  Ciba is currently evaluating additional therapeutic
indications for TGF-Beta3.  All of these programs are currently in the
research/feasibility stage.

     GENE TRANSCRIPTION-BASED DRUGS

     Through the Company's work in oncogenes and anti-oncogenes, it became
apparent that a novel class of pharmaceuticals based on orally active small
molecular weight compounds could be developed for a wide range of diseases, by
modulating the expression of specific cellular proteins through gene
transcription.  Gene transcription is the process by which genes produce
cellular proteins.  The mechanism whereby an extracellular stimulus affects
gene transcription is termed signal transduction.  Pharmacological intervention
during the steps of signal transduction can cause cells to either increase or
decrease the production of specific cellular proteins.

     To exploit gene transcription as a method of drug discovery, the Company
has developed proprietary screening methods (assays), which employ live,
genetically engineered cells and unique robotic





                                                                               6
<PAGE>   7
systems to determine whether the test compounds will modulate the expression of
the targeted genes.  The Company's high throughput robotic facility is now able
to screen in excess of 3 million compounds per year, and the Company is
currently working with approximately 29 different drug screens.  As an
important component of its overall strategy, the Company has established
additional collaborative programs in drug discovery and development, analogous
to its cancer therapeutics program with Pfizer, but targeted to different
therapeutic applications.

     Collaboration with Wyeth

     During the first quarter of 1992, the Company entered into a collaborative
research agreement with Wyeth, which was extended and expanded in January 1994.
This collaboration utilizes the Company's gene transcription technology in an
effort to develop drugs for the treatment of diabetes, immune system
modulation, asthma and osteoporosis.  Under the terms of this agreement, Wyeth
is funding the development program.  Royalties will be paid to the Company on
sales of resultant products, if any.

     The Wyeth collaboration has been successful in generating
transcriptionally active lead compounds on all four targets.  In addition to
this, in-vivo active compounds have been identified for the diabetes and immune
system modulation targets.  Wyeth has committed medicinal chemistry resources
to these programs.

     Collaboration with HMRI

     The Company is pursuing various areas jointly with HMRI.  On July 18, 1995
HMRI acquired Marion as part of a transaction in which the pharmaceutical
operations of Marion, Hoechst AG and Hoechst Roussel Pharmaceuticals, Inc.
were combined.  The Company had collaborative agreements with all three of
these companies prior to this combination.  Based on discussions with HMRI, the
Company believes that all of these agreements will be consolidated.  The
Company believes that this consolidation will result in a stronger, more
flexible collaborative program, although it expects the total level of funding
from HMRI will be reduced as compared to the aggregate funding from the three
previously separate entities.

     In 1992, prior to the acquisition of Marion by HMRI, the Company entered
into a collaborative agreement with Marion to discover and develop gene
transcription-based drugs to treat certain indications of the area of
cardiovascular disease, including primarily atherosclerosis.  In July 1994 the
Company successfully completed the first phase under this collaborative
agreement with the development of gene transcription-based assays.  This
resulted in a $1.5 million milestone payment and initiation of the compound
screening phase of the collaboration, which has





                                                                               7
<PAGE>   8
recently been completed.  The transcription screens have resulted in the
identification of in-vivo active lead compounds for two targets.  These lead
series are currently being evaluated by HMRI.  This collaboration has pioneered
the use of primary cell cultures in high throughput screening assays.

     The Company commenced a collaborative program with HMRI in January 1993,
focussing on inflammation, arthritis and metabolic diseases.  In April 1994,
the Company and HMRI commenced a collaborative arrangement to discover and
develop gene transcription-based drugs to treat Alzheimer's disease.  Each of
these programs is in a research phase.  The Company's two original HMRI
collaborations (i.e., other than the Marion program) have progressed to the
completion of screening of HMRI's medicinal libraries for all four of the
original targets (in the areas of metabolism, Alzheimer's disease, and
rheumatoid arthritis).  The lead compounds identified in these screens are
undergoing further analysis.  In particular, certain promising compounds are
being pursued in-vivo and through medicinal chemistry for the first rheumatoid
arthritis target.

     Proprietary Drug Discovery and Development

     In addition to its collaborative programs, the Company has undertaken
independent efforts to discover and develop gene transcription-based
therapeutics in various areas.  The Company initiated compound screening in its
proprietary programs in 1994 and is currently screening compounds against
multiple target proteins associated with chronic anemia, sickle cell disease
and other hematological disorders and muscular dystrophy.  The goal of these
programs is to identify small molecule, orally-active compounds that will
regulate the expression of key proteins associated with these diseases.
Generally, the Company's objective with respect to its proprietary programs
will be to identify lead compounds, transition them into clinical development
and manage this clinical development through early-stage clinical trials.  The
Company anticipates partnering with a large pharmaceutical firm at or before
this stage for clinical and commercial development of each potential
proprietary product.

     Chronic Anemia

     Currently, the Company's proprietary discovery and development efforts are
focused primarily on the protein erythropoietin ("Epo").  Injectable
recombinant Epo is now the therapy of choice for the treatment of anemia due to
chronic renal failure.  The recombinant drug is currently generating worldwide
sales revenues of over $1.0 billion annually.  Epo is also being tested for use
in anemia that develops as a consequence of chemotherapy and for autologous
blood donation.  However, the high cost of the recombinant protein and the
requirement that it be administered by injection may place some limitations on
its more widespread use.





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<PAGE>   9
The Company believes that there exists a significant market opportunity for an
effective, small molecular weight compound that induces the cellular production
of Epo and can be administered orally.  The Company's gene transcription
screens have resulted in the identification of several lead compounds that
regulate the expression of Epo.  The company is undertaking early preclinical
evaluation of these lead compounds.

     Other Proprietary Targets

     In addition to its efforts with respect to Epo, the Company is seeking to
discover and develop orally active gene transcription-based inducers of certain
proteins for the treatment of sickle cell disease, muscular dystrophy, chronic
myelogenous leukemia and certain viral infections.

     Sickle Cell Disease.  The marked manifestations of sickle cell disease can
be functionally ameliorated by the presence in blood cells of fetal hemoglobin
("HbF").  Currently, there are no approved drugs for the treatment of sickle
cell disease.  The Company has developed an assay to determine the ability of
test compounds to induce the production of HbF.  The most advanced compound in
clinical testing for this indication is hydroxyurea, which induces the
expression of HbF.  The Company's screening assays have resulted in the
identification of several compounds that are more potent than hydroxyurea.  The
Company's goal is to establish, through additional screening and evaluation, a
lead compound that induces expression of HbF as a candidate for clinical
development in this area.

     Muscular Dystrophy.  The functional impairment of the protein dystrophin
causes muscular dystrophy.  Utrophin is a closely related protein, elevated
levels of which in muscle cells may effectively reverse this disease.  Based on
initial screening work, the Company has received funding from a private
foundation, which will enable the Company  to commence the design and
validation of an appropriate utrophin gene transcription assay.  Immediately
upon completion of this assay, the Company will commence screening compounds
for induction of utrophin production.

     Others.  The Company has designed assays to screen compounds against drug
targets for the treatment of chronic myelogenous leukemia ("CML") and the human
immunodeficiency virus ("HIV").  These screens have identified certain active
molecules.  Further evaluation of the compounds identified in the CML screens
is being conducted in the laboratories of certain of the Company's
collaborators in a consortium funded under a federal grant.  The Company
anticipates that the clinical development of any lead compounds derived from
these evaluations will be conducted pursuant to a collaborative arrangement
with one or more pharmaceutical firms.  The Company is seeking a partner in
order to proceed jointly on further development of its anti-viral program,
which





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<PAGE>   10
includes established screens for HIV.

     The following table summarizes the Company's drug discovery and
development programs:



<TABLE>
<CAPTION>
=====================================================================
        PROGRAM                   FIELD              NUMBER OF
                                                        DRUG
                                                      TARGETS
- ---------------------------------------------------------------------
      <S>               <C>                              <C>
      Proprietary            Chronic Anemias             1
                           Sickle Cell Disease           1
                           Muscular Dystrophy            1
                           Chronic Myelogenous
                                Leukemia                 1
                         Human Immunodeficiency
                                  Virus                  3
- ---------------------------------------------------------------------
         Ciba                Chemoprotection             1
                              Wound Healing              1
- ---------------------------------------------------------------------
         HMRI                 Inflammation               1
                                Arthritis                1
                            Metabolic Disease            1
                           Alzheimer's Disease           1
                         Cardiovascular Disease          4
- ---------------------------------------------------------------------
        Pfizer                   Cancer                  8
- ---------------------------------------------------------------------
         Wyeth                  Diabetes                 1
                                 Asthma                  1
                        Immune-System Modulation         1
                              Osteoporosis               1
- ---------------------------------------------------------------------
         TOTAL                                           29
=====================================================================
</TABLE>





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<PAGE>   11
                               CANCER DIAGNOSTICS

     The Company is engaged in the development of a series of cancer diagnostic
tests based upon oncogenes and tumor suppressor genes as cancer markers.  One
line of these tests utilizes immunoassays and monoclonal antibodies to detect
the cancer markers in readily accessible physiological fluids, such as blood
serum.  The other line of diagnostic tests utilizes a series of monoclonal
antibodies capable of measuring the cancer markers in tissue sections using
immunohistochemistry techniques.  These tests are designed to aid oncologists
in the confirmation, monitoring, staging, screening and prognosis of human
cancer.  These tests may enable reference labs and physicians to diagnose
cancer at an earlier stage, select more effective types of treatment, and more
easily monitor patients during therapy.  The current focus of the Company's
diagnostic development program is on breast and colon cancer, but the Company
believes that many of the cancer markers in its program will have clinical
utility for other human tumors, such as lung, prostate, ovarian and stomach
cancer.

     The Company has been pursuing serum and tissue based cancer diagnostic
products in collaboration with Becton under a collaborative program started in
October 1991 (after an earlier collaboration from 1984 to 1989).  However,
during 1995, Becton decided to focus exclusively on tissue-based diagnostic
tests including immunohistochemistry, i.e., manual pathology diagnostic tests
and image analysis.  Becton has reduced funding under this program in fiscal
1996 and the Company is uncertain as to the funding of this program thereafter.
Management believes that the Company or Becton will seek FDA approval for one
or more immunohistochemistry tests for the manual pathology market.

     Since October 1995, the Company has independently supported its
development program in serum-based cancer diagnostics.  The Company is actively
seeking to form a collaboration with one or more major health care firms for
the clinical and commercial development of its serum-based diagnostic products.

                             INTELLECTUAL PROPERTY

     The Company believes that patents and other proprietary rights are vital
to its business.  It is the Company's policy to protect its intellectual
property rights in technology developed by its scientific staff by a variety of
means, including applying for patents in the United States and other major
industrialized countries.  The Company also relies upon trade secrets and
improvements, unpatented proprietary know-how and continuing technological
innovations to develop and maintain its competitive position.  In this regard,
the Company places restrictions in its agreements with third parties, including
research institutions, with respect to the use and disclosure of the Company's
proprietary technology.  The Company also has internal nondisclosure





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<PAGE>   12
safeguards, including confidentiality agreements, with its employees,
consultants and scientific advisors.

     To date, more than 102 U.S. patent applications and over 132 foreign
patent applications have been filed or acquired by the Company.  The Company
currently owns 21 issued U.S. patents and 47 granted foreign patents.  In
addition, other institutions have granted exclusive rights under their United
States and foreign patents and patent applications to the Company.

     The Company has been granted registration for the trademarks "OSI"(R) and
"TransProbe-1(R)" by the United States Patent and Trademark Office.

     There can be no assurance that patents will be issued for the Company's
pending patent applications or any applications which it may file in the
future, that any patent issued will cover a commercially marketable product or
process, or that any patent issued will not be circumvented or invalidated.
Moreover, there can be no assurance that others may not independently develop
the same or similar technology or obtain access to the Company's proprietary
technology.  The Company is aware of patent applications filed by, or patents,
issued to, other entities, with respect to technology potentially useful to the
Company and, in some cases, related to products and processes being used or
developed by the Company.  The Company currently cannot assess the effect, if
any, that these patents may have on its future operations.  The extent to which
efforts by other researchers resulted or will result in patents and the extent
to which the issuance of patents to others would have a material adverse effect
on the Company or would force the Company to obtain licenses from others, if
available, currently is unknown.

     The Company is aware of several patents and patent applications owned by
others who may allege infringement by products, including TGF-Beta3, which the
Company is seeking to develop.  The Company does not believe it is infringing
any valid claim of a patent owned by any third party and is taking such
actions, consistent with its beliefs, as it deems prudent to minimize the
possibility of any charge of patent infringement being validly raised against
the Company.

                           MARKETING AND DISTRIBUTION

     Those therapeutic products subject to the Company's collaborative
agreements with Pfizer, Ciba, Wyeth and HMRI will be marketed by those
companies and the Company is to receive royalties ranging up to 10% on net
sales of products, depending upon the nature of the product and the ownership
of the underlying technology.  The Company expects that products resulting from
future collaborations in gene transcription will be marketed under arrangements
which are similar to these agreements.





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<PAGE>   13
                                  COMPETITION

     The biotechnology industry is highly competitive, and the Company expects
competition to intensify as technological advances in the field are made and
become widely known.  There are many domestic and foreign biotechnology
companies which are engaged in the same or similar areas of research as those
in which the Company is engaged, many of which have substantially greater
financial, research, human, marketing and distribution resources than the
Company.  In addition, there are many large, integrated and established
pharmaceutical, chemical and medical diagnostic companies which have greater
capacity than the Company to develop and to commercialize the technologies upon
which the Company's research and development programs are based.  The Company
expects technological development to occur at a rapid rate in the biotechnology
industry.  Even if the Company is successful in establishing itself in the
industry, it will be necessary for the Company to maintain a competitive
position with respect to the evolving technology.  Universities, colleges, and
various other non-profit organizations are responsible for much of the cancer
research currently being performed.  These entities are increasingly becoming
aware of the commercial applications of their research and are seeking patent
protection and license revenues in certain product areas that are competitive
with the Company.  Competition in the biotechnology field currently is focused
primarily on research and technological capability.  The Company believes that,
as the field develops, manufacturing, regulatory, distribution and marketing
expertise increasingly will be important competitive factors.  In this regard,
the Company believes that arrangements with major health care corporations will
be important factors in the commercialization of many of the products which it
is currently developing.

                             GOVERNMENT REGULATION

     Regulation by governmental authorities in the United States and other
countries is a significant factor in the manufacturing and marketing of the
Company's products.  The Company is, and the products which the Company intends
to develop are and will be, subject to certain government regulations.
Products that may be developed and sold by the Company in the United States may
require approval from federal regulatory agencies, such as the FDA, as well as
state regulatory agencies.  Products that may be developed and sold by the
Company outside the United States may require approval from foreign regulatory
agencies.  The clinical diagnostic products being developed by the Company will
be subject to regulation by the Office of Medical Services of the FDA, and will
require some form of pre-market notification.  Therapeutic products will
require clinical evaluation under INDs and, in certain instances, clearance
under the auspices of the Office of Biologics in conjunction with other
appropriate FDA divisions.





                                                                              13
<PAGE>   14
     In all cases, the Company will be required to comply with all pertinent
Good Manufacturing Practices of the FDA for medical devices, biologics, and
drugs.  Accordingly, the regulations to which the Company and certain of its
products may be subject, and any changes with respect thereto, may materially
adversely affect the Company's ability to produce and market new products
developed by the Company.

     A product normally must go through several phases in order to obtain FDA
and other governmental approvals.  The research phase involves work up to and
including discovery, research and initial production.  The research phase is
followed by the pre-clinical phase, which involves studies in animal models
necessary to support an application to the FDA and foreign health registration
authorities to commence clinical testing in humans.  Clinical trials for
pharmaceutical products are conducted in three phases. In Phase I, studies are
conducted to determine safety and dosage limits.  In Phase II, studies are
conducted to gain preliminary evidence as to the efficacy of the product.  In
Phase III, studies are conducted to provide sufficient data for the statistical
proof as to safety and efficacy, including dose regimen.  Phase III is the
final stage of such clinical studies prior to the submission of an application
for approval of a New Drug Application and marketing approval.  The amount of
time necessary to complete any of these phases cannot be predicted with any
certainty.

     The Company's present and future activities are, and will likely continue
to be, subject to varying degrees of additional regulation under the Atomic
Energy Act, Occupational Safety and Health Act, Environmental Protection Act,
national restrictions on technology transfer, import, export and customs
regulations, and other present and possible future foreign, federal, state and
local regulations.

                         SCIENTIFIC AND OTHER PERSONNEL

     The Company believes that its success will be largely dependent upon its
ability to attract and retain qualified personnel in scientific and technical
fields.  As of September 30, 1995, the Company employed 109 persons, of whom 80
were primarily involved in research and development activities, with the
remainder engaged in executive and administrative capacities.  All but one of
the Company's 31 scientists have Ph.D. degrees specializing in areas related to
the Company's various technologies.  Although the Company believes that it has
been successful to date in attracting skilled and experienced scientific
personnel, competition for such personnel is intense and there can be no
assurance that the Company will continue to be able to attract and retain
personnel of high scientific caliber.  The Company considers its employee
relations to be good.





                                                                              14
<PAGE>   15
ITEM 2.  PROPERTIES

     The Company leases a 30,000 square foot facility located at 106 Charles
Lindbergh Boulevard, Uniondale, New York.  The lease is for a period of fifteen
years with a five-year renewal option.  The annual base rent starts at $360,000
commencing July 1, 1991, increases by 10% after the first two years, and
thereafter increases by 10% every three years.  The Company is also responsible
for all taxes and utilities and the costs of general maintenance and repair of
the facility during the term of the lease.

     As of October 4, 1991, the Company entered into a lease for the executive
offices, laboratories and other facilities utilized in the Diagnostic Division
at 80 Rogers Street/129 Binney Street, Cambridge, Massachusetts.  The 11,000
square foot facility contains approximately 6,400 square feet of laboratory
space for immunology, molecular biology, tissue culture and protein chemistry,
a small animal testing facility, a process scale-up laboratory and
approximately 4,600 square feet of office space.  As of April 2, 1993, this
lease was amended to cover an additional 8,000 square feet at 84 Rogers Street
for additional office and distribution space.  The lease for both 80 and 84
Rogers Street expires December 31, 2003.  The combined annual base rent is
$180,500.  Assuming the Company is successful in its attempt to secure a
collaborative partner in its serum-based diagnostics program, the Company
intends to continue to operate the Diagnostic Division at this facility.  In
August 1995, the Company entered into a sublease agreement for approximately
50% of the Cambridge facility with the purchaser of the Research Products
Business for a term of three years, at an annual payment equal to 50% of the
Company's fixed lease payment and related facility costs, plus certain
operating costs.

     The Company believes that its facilities will be adequate to meet current
requirements for the foreseeable future.

ITEM 3.  LEGAL PROCEEDINGS

     There are no material legal proceedings pending against the Company.

ITEM 4.  SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

     There were no matters submitted to a vote of security holders during the
fourth quarter of fiscal 1995.





                                                                              15
<PAGE>   16
                                    PART II

ITEM 5.  MARKET FOR REGISTRANT'S COMMON STOCK AND RELATED
         STOCKHOLDER MATTERS

     The Company's common stock is traded in the over-the-counter market and is
included for quotation on the Nasdaq National Market under the symbol ONCS.
The following is the range of high and low sales prices by quarter for the
Company's common stock from the first quarter of fiscal 1994 through September
30, 1995 as reported on the Nasdaq National Market:


<TABLE>
<CAPTION>
                                                         HIGH        LOW
                                                         ----        ---
<S>                                                    <C>        <C>
1995 FISCAL YEAR
- ----------------
  First Quarter                                        $3  3/8    $2   3/8
  Second Quarter                                        3  3/8     2   3/8
  Third Quarter                                         4  5/8     2 15/16
  Fourth Quarter                                        7  1/8     3   1/2
</TABLE>





<TABLE>
<CAPTION>
                                                         HIGH        LOW
                                                         ----        ---
<S>                                                    <C>         <C>
1994 FISCAL YEAR
- ----------------
  First Quarter                                        $4  3/4     $3  1/2
  Second Quarter                                        4  1/8      3  1/8
  Third Quarter                                         3  7/8      2  7/8
  Fourth Quarter                                        3  5/8      2  1/4
</TABLE>

     As of November 30, 1995, there were approximately 771 holders of record of
the Company's common stock.  The Company has not paid any dividends since its
inception and does not intend to pay any dividends in the foreseeable future.
Declaration of dividends will depend, among other things, upon future earnings,
the operating and financial condition of the Company, its capital requirements
and general business conditions.





                                                                              16
<PAGE>   17
ITEM 6.  SELECTED FINANCIAL DATA

     The following table sets forth selected consolidated financial data with
respect to the Company for each of the years in the five year period ended
September 30, 1995.  The information set forth below should be read in
conjunction with the consolidated financial statements and notes thereto
included elsewhere herein.

<TABLE>
<CAPTION>
                                                        Years ended September 30                  
                                    ---------------------------------------------------------------
                                      1995(a)       1994(b)      1993(c)      1992(d)       1991       
                                      -------       ----         ----         ----          ---- 
<S>                                 <C>          <C>          <C>          <C>          <C>
Statement of Operations Data:
  Revenues                          $15,864,999  $16,299,489  $16,088,021  $11,094,175  $ 7,823,883
  Expenses:
    Research and
      development                    13,523,043   12,125,210   10,659,806    8,127,466    4,860,226
    Production                        1,252,990    1,427,981    1,443,649    1,420,686      748,927
    Selling, general
      and administrative              7,140,208    7,487,090    6,429,701    5,219,606    4,130,777
    Amortization of
      intangibles                     1,696,561    1,745,163    1,745,713    1,745,694        -
  Loss from operations               (7,747,803)  (6,485,955)  (4,190,848)  (5,419,277)  (1,916,047)
  Other income, net                     768,744      762,031      884,806      882,630      724,450
  Relocation related
    expenses                              -             -            -            -        (342,653)
  Gain on sale of
    Research Products                 2,720,389         -            -            -            -
  Net loss                           (4,258,670)  (5,723,924)  (3,306,042)  (4,536,647)  (1,534,250)
  Net loss per share                      (0.25)       (0.35)       (0.21)       (0.31)       (0.17)
  Weighted average
    number of shares
    of common stock
    outstanding                      16,757,370   16,335,000   16,080,000   14,801,000    9,184,000
Balance Sheet Data:
  Cash and short-term
    investments                     $26,786,566  $18,157,891  $22,390,454  $18,897,238  $10,110,352
  Accounts Receivable                 1,320,015    3,032,839    3,146,990    2,094,464      666,054
  Working capital                    26,127,781   21,208,145   25,914,827   22,363,383   10,301,199
  Total assets                       44,057,421   42,040,900   47,614,538   43,930,705   18,079,405
  Stockholders' equity               40,549,636   38,656,314   45,044,603   41,960,868   15,867,252
</TABLE>

(a) During fiscal 1995, the Company sold its Research Products Business and
also sold shares of its common stock to Ciba-Geigy, Ltd. (See Notes 3 and 8(c)
to the Consolidated Financial Statements.)

(b) During fiscal 1994, the Company changed its method of accounting for
marketable securities to adopt the provisions of the Statement of Financial
Accounting Standards No.115, "Accounting for Certain Investments in Debt and
Equity Securities".

(c)During fiscal 1993, the Company entered into collaborative agreements with
Marion Merrell Dow and Hoechst AG and also sold shares of its common stock to
Marion Merrell Dow (See Notes 4 and 8(c) of Notes to Consolidated Financial
Statements.)

(d)During fiscal 1992, the Company acquired the cancer business of Applied
bioTechnology and completed an offering of its common stock (see Notes 3 and
8(d) of Notes to Consolidated Financial Statements).





                                                                              17
<PAGE>   18
ITEM 7.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
         CONDITION AND RESULTS OF OPERATIONS

Revenues

     Total revenues decreased approximately $434,000, or 3% in fiscal year 1995
compared to fiscal year 1994 and increased approximately $211,000 or 1%, in
fiscal year 1994 compared to fiscal year 1993.  Collaborative program revenues
increased by approximately $597,000 or 7% in fiscal 1995 due to the
commencement of an additional research program with HMRI in April 1994, the
expansion and extension of the collaborative research agreement with Wyeth in
March 1994 and increases in revenues under the Pfizer agreement with respect to
anti-cancer drugs.  These increases were offset by  decreased funding from
Pfizer associated with Pfizer's decreased participation in the TGF-Beta3 oral
mucositis program in order to focus exclusively on its collaborative programs
with the Company related to the research and development of anti-cancer drugs.
Previously Pfizer had funded the Company's TGF-Beta3 oral mucositis program as
a supplement to its anti-cancer collaborative program.  Under a collaborative
agreement with Ciba, entered into on April 19, 1995, the Company will fund the
development of TGF-Beta3 for oral mucositis through the end of Phase I clinical
trials and Ciba will fund its subsequent clinical development. The increase in
collaborative revenues in fiscal 1995 was also offset by decreases in sales and
other research revenues.  The Company sold its Research Products Business to
Calbiochem-Novabiochem International, Inc. on August 2, 1995, and accordingly,
there were no significant sales of the Research Products Business recorded
after this date, nor will these sales contribute to overall revenues in the
future.  Sales decreased approximately $651,000 or 13% in fiscal 1995.  Other
research revenues decreased approximately $380,000 or 17% in fiscal 1995, which
is largely the result of decreased funding related to a National Cooperative
Drug Discovery Group Grant.

     The increase in total revenues in fiscal year 1994 is attributable to
increases of $1,606,000 in collaborative research revenues relating to the
commencement of the additional HMRI collaborative program and a milestone
payment from Marion, grant revenues and sales of research products offset by a
$1,395,000 decrease in the payments from Pfizer. As discussed above, previously
Pfizer had funded the development of TGF-Beta3 as a supplement to the
collaborative program. Sales of research products increased approximately
$110,000 or 2% in fiscal 1994, due primarily to a change in the mix of products
sold.  Other research revenues in fiscal 1994 increased by approximately
$408,000 or 22%, compared to the prior fiscal year.  The increase in fiscal
1994 is due to an increase in the number and size of grants awarded to the
Company.





                                                                              18
<PAGE>   19
Expenses

     Research and development expenses increased by approximately $1,398,000,
or 12% in fiscal year 1995 compared to fiscal year 1994 and increased by
approximately $1,465,000, or  14%, in fiscal year 1994 compared to fiscal year
1993. The increase in fiscal 1995 was due principally to the start during 1994
of the additional research program with HMRI, the expansion and extension of
the Wyeth agreement and the increase in activities related to the Company's
proprietary programs in the area of medicinal and natural products chemistry
and clinical development of TGF-Beta3 for oral mucositis.

     The increase in 1994 was due to an increase in expenditures in the
collaborative programs with Marion and the commencement of the additional
program with HMRI, and increased expenses incurred in connection with the
Company's proprietary and grant programs.

     Research and development expenses reimbursed by collaborative partners and
government research grants aggregated approximately $12,445,000 $11,075,000,
and $10,305,000, for fiscal years 1995, 1994, and 1993, respectively.

     Production expenses decreased approximately $175,000, or 12% for fiscal
year 1995 as compared with fiscal year 1994, reflecting the sale of the
Research Products Business.  Production expenses remained approximately
constant in fiscal 1994 compared to fiscal 1993.

     Selling, general and administrative expenses decreased approximately
$347,000 or 5% in fiscal 1995 compared to fiscal 1994. This decrease reflects
the reduction in sales and marketing expenses due to the sale of the Research
Products Business, offset by increases in professional fees related to
corporate development activities. Selling, general and administrative expenses
increased approximately $1,057,000 or 16% in fiscal 1994 compared to fiscal
1993.  This increase is principally attributable to expenses incurred in the
operations of the Company's French subsidiary and increased payroll and
consulting expenses.  In connection with the sale of the Research Products
Business, the Company elected to close down the operations of its French
subsidiary.  Costs associated with the close down have been offset against the
gain on the sale of the Research Products Business.

      Amortization of intangibles in 1995, 1994, and 1993 represents
amortization of patents and goodwill that resulted from the acquisition of the
cancer diagnostics business of Applied bioTechnology.  The decrease in
amortization expense in fiscal 1995 is due to the write-off of a portion of
goodwill in connection with the sale of the Research Products Business.





                                                                              19
<PAGE>   20
Other Income and Expense

     Net investment income decreased approximately $24,000, or 3% for fiscal
1995 compared to fiscal 1994.  Interest income earned in fiscal 1995  was
higher than in fiscal 1994 despite a lower average principal balance in the
more recent year due to increased interest rates.  However, this was offset in
part by a net realized loss on the sale of certain investments.

     Net investment income decreased approximately $72,000 or 8% for fiscal
1994 compared to fiscal  1993.  This decrease was a result of declining
interest rates and decreased principal balance invested.

     The Company sold its Research Products Business to Calbiochem-Novabiochem
International, Inc. on August 2, 1995 for $6 million in cash and and other
considerations.  The net gain on the sale was approximately $2.7 million.

New Accounting Pronouncements

     In March 1995, Statement of Financial Accounting Standards (SFAS) No.
121, "Accounting for the Impairment of Long-Lived Assets and for Long-Lived
Assets to Be Disposed Of" was issued which establishes accounting standards for
the impairment of long-lived assets, certain identifiable intangibles, and
goodwill related to those assets to be held and used and for long-lived assets
and certain intangibles to be disposed of.  SFAS No. 121 requires that
long-lived assets and certain intangibles to be held and used by an entity be
reviewed for impairment whenever events or changes in circumstances indicate
that the carrying amount of the asset may not be recoverable.  SFAS No. 121
must be implemented no later than fiscal 1997.  The adoption of SFAS No. 121 is
not expected to have material impact on the Company's consolidated financial
position or operating results.

     In October 1995, SFAS No. 123, "Accounting for Stock-Based Compensation",
was issued which establishes financial accounting and reporting standards for
stock-based employee compensation plans.  SFAS No. 123 defines a fair value
based method of accounting for an employee stock option or similar equity
instrument and encourages all entities to adopt that method of accounting for
all of their employee stock compensation plans.  However, SFAS No. 123 would
permit the Company to continue to measure compensation costs for its stock
option plans using the intrinsic value based method of accounting prescribed by
APB Opinion No. 25, "Accounting for Stock Issued to Employees".  If the Company
elected to remain with its current accounting, the Company must make pro forma
disclosures of net income and earnings (loss) per share as if the fair value
based method of accounting had been applied.  SFAS No. 123 must be implemented
no later than fiscal 1997.  The Company has not yet determined the valuation
method it





                                                                              20
<PAGE>   21
will employ or the effect on operating results of implementing SFAS No. 123.

Liquidity and Capital Resources

     At September 30, 1995, working capital (representing primarily cash, cash
equivalents and short-term investments) aggregated approximately $26,128,000.

     The Company has been, and will continue to be, dependent upon
collaborative research revenues, government research grants, interest income
and cash balances until products developed from its technology are commercially
marketed.  On April 19, 1995, Ciba purchased 909,091 shares of the Company's
common stock for an aggregate purchase price of $5,000,000.

     During 1995, Marion was acquired by HMRI as part of a transaction in which
the pharmaceutical operations of Hoechst AG, Hoechst Roussel Pharmaceuticals,
Inc. and Marion were consolidated.  The Company is aware that HMRI is
conducting a review of all its research and development programs.  However,
based on discussions with HMRI, the Company expects its  programs with HMRI to
continue under one overall agreement in the future.  The Company anticipates
that the annual funding under the consolidated agreement will be somewhat lower
than the aggregate level of the annual funding under the three previously
separate agreements.

     Since its commencement in 1991 and until the second quarter of fiscal
1995, the cancer diagnostics collaborative program with Becton has focused on
both serum-based and histochemical immunoassays.  During the second quarter of
fiscal 1995, Becton  decided to focus exclusively on cellular cancer
diagnostics including histochemical immunoassays and reduce its funding under
this program in fiscal 1996. The Company is uncertain as to the funding of this
program thereafter. The Company is continuing the development of serum-based
cancer diagnostic products and is in discussions with possible new
collaborative partners in this area, but cannot predict the outcome.

     The Company believes that with the funding from its  collaborative
research programs, government research grants, interest income, and cash
balances, the Company's financial resources are adequate for its current needs.
However, the Company's capital requirements may vary as a result of a number of
factors, including, competitive and technological developments, and the time
and expense required to obtain governmental approval of products, some of which
factors are beyond the Company's control.  There can be no assurance that
scheduled payments will be made by third parties, that current agreements will
not be cancelled, that government research grants will continue to be received
at current levels or that unanticipated events requiring the expenditure of
funds will not occur.  Further, there can be no assurance that the





                                                                              21
<PAGE>   22
Company will be able to obtain any additional required funds, or, if such funds
are available, that such funds will be available on favorable terms.  The
Company expects to commence a new technology development program during fiscal
year 1996.  This program is intended to expand the Company's technological
capabilities in the drug discovery area and is anticipated to involve an
expenditure of $7-10 million over a 3-year period.  The Company has not
determined definitively the method or methods by which it will fund this
program.  The scope of this program and the total amount invested may be
affected by the ability of the Company to obtain financing from external
sources on terms the Company deems acceptable.





                                                                              22
<PAGE>   23
ITEM 8.  CONSOLIDATED FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA


Consolidated Financial Statements:



<TABLE>
<CAPTION>
                                                         Page
                                                        Number
                                                        ------
<S>                                                      <C>          
Independent Auditors' Report                             F-1

Consolidated Balance Sheets
     September 30, 1995 and 1994                         F-2

Consolidated Statements of Operations - Years ended
     September 30, 1995, 1994 and 1993                   F-3

Consolidated Statements of Stockholders'
Equity - Years ended
     September 30, 1995, 1994 and 1993                   F-4

Consolidated Statements of Cash Flows - Years ended
     September 30, 1995, 1994 and 1993                   F-5

Notes to Consolidated Financial Statements               F-7
</TABLE>





                                                                              23
<PAGE>   24

                          INDEPENDENT AUDITORS' REPORT



The Stockholders
  and Board of Directors
Oncogene Science, Inc.:

     We have audited the accompanying consolidated balance sheets of Oncogene
Science, Inc. and subsidiaries as of September 30, 1995 and 1994, and the
related consolidated statements of operations, stockholders' equity and cash
flows for each of the years in the three-year period ended September 30, 1995.
These consolidated financial statements are the responsibility of the Company's
management.  Our responsibility is to express an opinion on these consolidated
financial statements based on our audits.

     We conducted our audits in accordance with generally accepted auditing
standards.  Those standards require that we plan and perform the audit to
obtain reasonable assurance about whether the financial statements are free of
material misstatement.  An audit includes examining, on a test basis, evidence
supporting the amounts and disclosures in the financial statements.  An audit
also includes assessing the accounting principles used and significant
estimates made by management, as well as evaluating the overall financial
statement presentation.  We believe that our audits provide a reasonable basis
for our opinion.

     In our opinion, the consolidated financial statements referred to above
present fairly, in all material respects, the financial position of Oncogene
Science, Inc. and subsidiaries at September 30, 1995 and 1994, and the results
of their operations and their cash flows for each of the years in the
three-year period ended September 30, 1995 in conformity with generally
accepted accounting principles.

     During fiscal 1994, the Company changed its method of accounting for
income taxes and marketable securities to adopt the provisions of the
Statements of Financial Accounting Standards No.109, "Accounting for Income
Taxes", and No.115, "Accounting for Certain Investments in Debt and Equity
Securities", respectively.


                                      KPMG PEAT MARWICK LLP


Jericho, New York
December 1, 1995



                                      F-1
<PAGE>   25
                   ONCOGENE SCIENCE, INC. AND SUBSIDIARIES
                         CONSOLIDATED BALANCE SHEETS
                         SEPTEMBER 30, 1995 AND 1994

<TABLE>
<CAPTION>
                                                    1995           1994
                                                    ----           ----
<S>                                              <C>          <C>
ASSETS
- ------
Current assets:
  Cash and cash equivalents                      $17,919,609  $    322,308
  Short-term investments                           8,866,957    17,835,583
  Receivables, including
    trade receivables of $163,132 and
    $956,747 at September 30, 1995
    and 1994, respectively                         1,320,015     3,032,839
  Inventory                                             -        1,744,663
  Interest receivable                                 45,263       147,222
  Grants receivable                                  433,530       659,621
  Prepaid expenses                                   518,150       445,464
                                                  ----------   -----------
    Total current assets                          29,103,524    24,187,700
                                                  ----------    ----------

Property, equipment and leasehold
  improvements - net                               5,709,515     6,554,237
Other receivable                                     262,703       425,520
Loans to officers and employees                       25,516        85,516
Other assets                                         325,582       118,068
Intangible assets - net                            8,630,581    10,669,859
                                                 -----------   -----------
                                                 $44,057,421   $42,040,900
                                                 ===========   ===========
LIABILITIES AND STOCKHOLDERS' EQUITY
- ------------------------------------
Current liabilities:
  Accounts payable and accrued
    expenses                                      $2,825,702    $2,522,171
  Current portion of unearned revenue                150,041       457,384
                                                   ---------    ----------
    Total current liabilities                      2,975,743     2,979,555
                                                   ---------    ----------

Other liabilities:
  Long-term portion of unearned revenue              165,839       216,588
  Accrued postretirement benefit cost                366,203       188,443
                                                   ---------    ----------
    Total liabilities                              3,507,785     3,384,586
                                                   ---------    ----------
Stockholders' equity:
  Common stock, $.01 par value;
    50,000,000 shares authorized,
    17,683,047 shares issued at
    September 30, 1995 and
    16,564,715 shares issued at
    September 30, 1993                               176,830       165,647
  Additional paid-in capital                      66,735,375    61,199,670
  Accumulated deficit                            (26,129,341)  (21,870,671)
  Cumulative foreign currency
    translation adjustment                           (55,669)      (41,773)
  Unrealized holding loss on
    short-term investments                           (35,000)     (654,000)
                                                  -----------  ------------
                                                  40,692,195    38,798,873
  Less: treasury stock, at cost;
    222,521 shares at
    September 30, 1995 and 1994                     (142,559)     (142,559)
                                                  -----------  ------------
     Total stockholders' equity                   40,549,636    38,656,314
                                                  ----------   -----------
Commitments and contingencies
                                                 $44,057,421   $42,040,900
                                                 ===========   ===========
</TABLE>

          See accompanying notes to consolidated financial statements.
                                      F-2
<PAGE>   26
                    ONCOGENE SCIENCE, INC. AND SUBSIDIARIES
                     CONSOLIDATED STATEMENTS OF OPERATIONS


<TABLE>
<CAPTION>
                                             YEARS ENDED SEPTEMBER 30,      
                                      ------------------------------------
                                        1995          1994         1993
                                        ----          ----         ----
<S>                                  <C>          <C>          <C>
Revenues:
  Collaborative program
    revenues, principally
    from related parties              $9,685,856  $ 9,089,295  $ 9,396,609
  Sales                                4,286,540    4,937,917    4,827,185
  Other research revenue               1,892,603    2,272,277    1,864,227
                                      ----------   ----------  -----------
                                      15,864,999   16,299,489   16,088,021
                                      ----------   ----------  -----------
Expenses:
  Research and development            13,523,043   12,125,210   10,659,806
  Production                           1,252,990    1,427,981    1,443,649
  Selling, general and
    administrative                     7,140,208    7,487,090    6,429,701
  Amortization of
    intangibles                        1,696,561    1,745,163    1,745,713
                                      ----------   ----------  -----------
                                      23,612,802   22,785,444   20,278,869
                                      ----------   ----------  -----------
     Loss from operations             (7,747,803)  (6,485,955)  (4,190,848)
                                      -----------  -----------  -----------
Other income (expense):
  Net investment income                  834,830      858,904      930,428
  Other expense                          (66,086)     (96,873)     (45,622)    
  Gain on sale of Research
     Products Business                 2,720,389       -              -   
                                     -----------  -----------  -----------

Net loss                             $(4,258,670) $(5,723,924) $(3,306,042)
                                     ------------ ------------ ------------

Weighted average number
  of shares of common
  stock outstanding                   16,757,370   16,335,000   16,080,000
                                     ===========  ===========  ===========

Net loss per weighted
  average share of
  common stock
  outstanding                        $      (.25) $      (.35) $      (.21)
                                     ============ ============ =========== 
</TABLE>





          See accompanying notes to consolidated financial statements.

                                      F-3
<PAGE>   27
                    ONCOGENE SCIENCE, INC. AND SUBSIDIARIES
                CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY
                 YEARS ENDED SEPTEMBER 30, 1995, 1994 AND 1993

<TABLE>
<CAPTION>
                                                        
                                                                                                Unrealized                       
                                                                                     Foreign     Holding                  Total  
                                       Common stock      Additional                 Currency     Loss on                  Stock- 
                                   -------------------     Paid-in    Accumulated  Translation  Short-term   Treasury    holders'
                                    Shares     Amount      Capital     Deficit      Adjustment  Investments    Stock      Equity 
                                    ------     ------    ----------- ------------  ------------ -----------  --------    --------
<S>                                <C>         <C>       <C>         <C>             <C>         <C>        <C>         <C>
Balance at September 30, 1992      15,285,092  $152,851  $54,791,281 $(12,840,705)   $    -      $   -      $(142,559)  $41,960,868
                                                                                                
Options exercised                     175,729     1,758      386,272         -            -          -          -           388,030
Issuance of common stock                                                                                         
  for employee purchase plan              211         2          974         -            -          -          -               976
Sale of common stock and                                                                                         
  warrants to                                                                                                    
  Marion Merrell Dow                1,090,909    10,909    5,989,091         -            -          -          -         6,000,000
Foreign currency                                                                                                 
  translation adjustment                 -         -            -            -             771       -          -               771
Net loss                                 -         -            -      (3,306,042)        -          -          -        (3,306,042)
                                   ----------  --------  -----------  -----------    ---------   --------    ---------   -----------
                                                                                                 
Balance at September 30, 1993      16,551,941   165,520   61,167,618  (16,146,747)         771       -       (142,559)   45,044,603
                                                                                                
Options exercised                      10,700       107       25,724         -            -          -           -           25,831
Issuance of common stock for                                                                                      
   employee purchase plan                                                                                         
   and other                            2,074        20        6,328         -            -          -           -            6,348
Unrealized holding loss on                                                                                        
   short term investments                -         -            -            -            -      (654,000)       -         (654,000)
Foreign currency translation                                                                                      
   adjustment                            -         -            -            -         (42,544)      -           -          (42,544)
Net loss                                 -         -            -      (5,723,924)        -          -           -       (5,723,924)
                                   ----------  --------  -----------  ------------   ---------   --------    ---------  ------------
                                                                                                
Balance at September 30, 1994      16,564,715   165,647   61,199,670  (21,870,671)     (41,773)  (654,000)   (142,559)   38,656,314
                                                                                                
Options exercised                     206,025     2,060      571,408         -            -          -           -          573,468
Issuance of common stock for                                                                                      
   employee purchase plan                                                                                         
   and other                            3,216        32       10,523         -            -          -           -           10,555
Unrealized holding gain on                                                                                        
   short term investments                -         -            -            -            -       619,000        -          619,000
Sale of common stock to Ciba-Geigy    909,091     9,091    4,953,774         -            -          -                    4,962,865
Foreign currency translation                                                                                      
   adjustment                            -         -            -            -         (13,896)      -           -          (13,896)
Net loss                                 -         -            -      (4,258,670)        -          -           -       (4,258,670)
                                   ----------  --------  -----------  ------------   ---------   --------   ---------   ------------
                                                                                                
Balance at September 30, 1995      17,683,047  $176,830  $66,735,375 $(26,129,341)   $ (55,669)  $(35,000)  $(142,559)  $40,549,636
                                   ==========  ========  =========== =============   ==========  =========  =========   ===========
</TABLE>


          See accompanying notes to consolidated financial statements.
                                      F-4
<PAGE>   28

                    ONCOGENE SCIENCE, INC. AND SUBSIDIARIES
                     CONSOLIDATED STATEMENTS OF CASH FLOWS



<TABLE>
<CAPTION>
                                                    Years ended September 30,    
                                              ------------------------------------
                                                1995         1994          1993    
                                                ----         ----          ----    
<S>                                         <C>          <C>           <C>               
Cash flow from operating activities:                                               
  Net loss                                  $(4,258,670) $(5,723,924)  $(3,306,042)
  Adjustments to reconcile net                                                     
    loss to net cash used                                                          
    by operating activities:                                                       
  Gain on sale of Research Products                                                
    Business                                 (2,720,389)        -             -    
  Loss on sale of investments                   118,141         -             -    
  Depreciation and amortization               1,037,044    1,165,809       955,952 
  Amortization of intangibles                 1,696,561    1,745,163     1,745,713 
  Foreign exchange loss                         (13,896)     (26,649)        5,319 
                                                                                   
                                                                                   
  Changes in assets and liabilities, net                                           
  of the effects of the sale of the                                                
  Research Products Business:                                                      
  Receivables                                 1,605,217      114,152    (1,052,526)
  Inventory                                     216,405     (197,570)     (132,236)
  Interest receivable                           101,959     (107,890)      171,643 
  Grants receivable                             226,091      105,895      (497,240)
  Prepaid expenses                             (196,491)     (98,068)       27,674 
  Other receivable                              162,817       92,090      (517,610)
  Other assets                                 (234,378)      23,863      (115,851)
  Accounts payable                                                                 
    and accrued expenses                       (586,276)     232,439       468,673 
  Unearned revenue                             (358,092)     415,972      (209,500)
  Accrued postretirement                                                           
    benefit cost                                177,760       78,568       109,875 
                                                -------    ---------    ---------- 
Net cash used by                                                                   
  operating activities                      $(3,026,197) $(2,180,150)  $(2,346,156)
                                            ------------ ------------  ------------
</TABLE>


                                  Continued

See accompanying notes to consolidated financial statements.


                                     F-5
<PAGE>   29
                    ONCOGENE SCIENCE, INC. AND SUBSIDIARIES
               CONSOLIDATED STATEMENTS OF CASH FLOWS (CONTINUED)


<TABLE>
<CAPTION>
                                                   Years ended September 30,    
                                             ------------------------------------
                                                1995         1994        1993
                                                ----         ----        ----
<S>                                         <C>           <C>          <C>
Cash flows from investing activities:
  Additions to short-term
    investments                              (3,723,180)  (5,918,880)  (29,092,688)
  Maturities and sales of short-term
    investments                              13,192,665    9,135,823    25,827,272
  Additions to property,
    equipment and leasehold
    improvements                               (403,275)  (1,512,543)   (1,486,646)
  Disposition of equipment                          -          -            12,028
  Net change in loans to officers
    and employees                                10,400      (40,258)       (4,702)
  Proceeds from sale of Research Products
    Business                                  6,000,000        -             -
  Foreign currency transaction                      -        (15,897)       (4,548)
                                              ---------   ----------    ---------- 

Net cash provided by (used in)
  investing activities                       15,076,610    1,648,245    (4,749,284)
                                             ----------   ----------   ----------- 

Cash flows from financing activities:
  Proceeds from issuance of common
    stock, net                                4,962,865        -         6,000,000
  Proceeds from exercise
    of stock options and
    employee stock purchase plan                584,023       32,180       389,006
  Repayment of loan
    to stockholders                               -            -         1,000,000
                                             ----------   ----------    ----------
Net cash provided by
  financing activities                        5,546,888       32,180     7,389,006
                                             ----------   ----------    ----------
Net increase (decrease) in cash
  and cash equivalents                       17,597,301     (499,725)      293,566
Cash and cash equivalents at
  beginning of year                             322,308      822,033       528,467
                                             ----------   ----------    ----------
Cash and cash equivalents
  at end of year                            $17,919,609   $  322,308    $  822,033
                                            ===========   ==========    ==========
</TABLE>





                                     F-6
<PAGE>   30
                    ONCOGENE SCIENCE, INC. AND SUBSIDIARIES
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                 YEARS ENDED SEPTEMBER 30, 1995, 1994 AND 1993

(1)  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

     (a)  Principles of Consolidation

     The consolidated financial statements of the Company include the accounts
of Oncogene Science, Inc. and its wholly owned subsidiaries Applied
bioTechnology, Inc. and Oncogene Science S.A., a foreign subsidiary.  All
intercompany balances and transactions have been eliminated.  The Company is
engaged in the research and development of biopharmaceutical products for the
treatment and diagnosis of cancer, cardiovascular and other human diseases
associated with abnormalities of cell growth and control.

     (b)  Revenue Recognition

     Collaborative research revenues represent funding arrangements for the
conduct of research and development ("R&D") in the field of biotechnology and
are recognized when earned in accordance with the terms of the contracts and
the related development activities undertaken.  Other research revenues are
recognized pursuant to the terms of grants which provide reimbursement of
certain expenses related to the Company's other R&D activities.  Collaborative
and other research revenues are accrued for expenses incurred in advance of the
reimbursement and deferred for cash payments received in advance of
expenditures.  Such deferred revenues are recorded as revenue when earned.
(See Note 3)

     Revenue from the sale of diagnostic and research reagent products is
recognized at time of shipment.

     (c)  Patents and Goodwill

     As a result of the Company's research and development programs, including
programs funded pursuant to the research and development funding agreements
(See Note 4), the Company has applied for a number of patents in the United
States and abroad.  Such patent rights are of significant importance to the
Company to protect products and processes developed.  Costs incurred in
connection with patent applications for the Company's research and development
programs have been expensed as incurred.

     Patents and goodwill acquired in connection with the acquisition of
Applied bioTechnology's cancer business in October 1991, have been capitalized
and are being amortized on a straight-line basis over the remaining lives of
the respective patents, and over five years for goodwill.  The Company
continually evaluates the recoverability of its intangible assets by assessing
whether the amortized value can be recovered through expected future results.

                                      F-7
<PAGE>   31

(1)  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONT'D)

(d)  Research and Development Costs

     Research and development costs are charged to operations as incurred and
include direct costs of research scientists and equipment and an allocation of
laboratory facility and central service.  In fiscal years 1995, 1994, and 1993
R&D activities include approximately $5,695,740, $3,516,000, and $3,012,000, of
independent R&D, respectively.  Independent R&D represents those research and
development activities, including research and development activities funded by
government research grants, substantially all the rights to which the Company
will retain.  The balance of research and development represents expenses under
the collaborative agreements funded by Pfizer Inc.  (Pfizer), Becton Dickinson
and Co.(Becton), Wyeth-Ayerst, a division of American Home Products (Wyeth),
Marion Merrell Dow Inc. (Marion), Hoechst AG and Hoechst-Roussel.  On July 18,
1995, Marion, Hoechst AG and Hoechst-Roussel merged forming a new company named
Hoechst Marion Roussel Inc. (HMRI).  The Company believes all of the Hoechst
collaborative agreements will continue under HMRI.

(e)  Inventories

     Inventories represent principally diagnostics and research reagent
products and are stated at the lower of standard costs (approximating average
costs) or market. During fiscal 1995, the Company sold the business and certain
assets, including inventory, of the Research Products Business.  (See Note 3)

(f)  Depreciation and Amortization

     Depreciation of equipment is provided over the estimated useful lives of
the respective asset groups on a straight-line basis.  Leasehold improvements
are amortized on a straight-line basis over the lesser of the estimated useful
lives or the remaining term of their lease.

(g)  Income Taxes

     Effective October 1, 1993, the Company adopted the provisions of Statement
of Financial Accounting Standards No. 109, "Accounting for Income Taxes" ("SFAS
No. 109").  SFAS No. 109 requires that the Company recognize deferred tax
liabilities and assets for the expected future tax consequences of events that
have been included in the financial statements or tax returns.  Under SFAS No.
109, deferred tax liabilities and assets are determined on the basis of the
difference between the tax basis of assets and liabilities and their respective
financial reporting amounts ("temporary differences") at enacted tax rates in
effect for the years in which the differences are expected to reverse.

                                      F-8
<PAGE>   32

(1)  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONT'D)

The adoption of SFAS No. 109 did not have any impact on the financial position
or results of operations of  the Company.  The Company, in years prior to
fiscal 1994, accounted for income taxes in accordance with Accounting
Principles Board Opinion No. 11, "Accounting for Income Taxes."

(h)  Loss Per Share

     Loss per common share is computed by dividing the net loss by the weighted
average number of common shares outstanding.  Common share equivalents (stock
options) are not included in the computation since their inclusion would be
anti-dilutive.

(i)  Cash and Cash Equivalents

     The Company includes as cash equivalents reverse repurchase agreements,
treasury bills, and other time deposits with original maturities of three
months or less.

(2)  Investments

     The Company invests its excess cash in U.S. Government securities and debt
instruments of financial institutions and corporations with strong credit
ratings.  The Company has established guidelines relative to diversification of
its cash investments and their maturities that should maintain safety and
liquidity.  These guidelines are periodically reviewed and modified to take
advantage of trends in yields and interest rates. The Company uses the specific
identification method to determine the cost of securities sold.

     The Company adopted SFAS No. 115, "Accounting for Investments in Certain
Debt and Equity Securities," (SFAS No. 115) as of October 1, 1993.  SFAS No.
115 requires securities classified as available for sale to be recorded at
estimated fair value.  The Company's short-term investments, which include
United States Treasury obligations and corporate debt securities with original
maturities in excess of one year, are classified as securities available for
sale based upon management's current investment policy.  Such investments,
prior to the adoption of SFAS No. 115, were recorded at the lower of cost or
estimated market value with aggregate declines in market value below amortized
cost charged against earnings.  Under SFAS No. 115, changes in the net
unrealized gains or losses of available for sale securities are reported as a
separate component in stockholder's equity.  The adoption of SFAS No. 115 had
no material impact on the Company's financial position.

                                      F-9
<PAGE>   33

     The following is a summary of available-for-sale securities as of
September 30, 1995 and 1994:


<TABLE>
<CAPTION>
                                          GROSS
                                        UNREALIZED      FAIR
 1995                        COST         LOSSES        VALUE
 ----                        ----        (GAINS)        -----
                                         -------
 <S>                       <C>         <C>            <C>
 US Treasury Securities
  and obligations of US
  Government agencies      $6,232,027  $   (85,942)   $6,146,085

 Corporate debt
 securities                 2,669,930        50,942    2,720,872
                            ---------     ---------    ---------
                   TOTAL   $8,901,967     $(35,000)   $8,866,957
                          ===========     =========   ==========
</TABLE>



<TABLE>
<CAPTION>
                                           GROSS
                                        UNREALIZED      FAIR
 1994                         COST        LOSSES        VALUE
 ----                         ----        ------        -----
 <S>                      <C>           <C>          <C>
 US Treasury Securities
 and obligations of US
 Government agencies      $16,753,928   $ (458,000)  $16,295,928


 Corporate debt
 securities                 1,735,655     (196,000)    1,539,655
                          -----------   -----------  -----------
                    TOTAL $18,489,583   $ (654,000)  $17,835,583
                          ===========   ===========  ===========
</TABLE>


Realized losses on sales of investments during fiscal 1995 were approximately
$149,000.  The Company has not realized any significant gains or losses on the
sale of its short-term investments during fiscal years 1994 and 1993.

(3)  SALE OF RESEARCH PRODUCTS BUSINESS

     On August 2, 1995, the Company sold certain assets and the business of
the Research Products Business (Business) to Calbiochem-Novabiochem
International, Inc. (Calbiochem) for $6.0 million in cash.  The assets sold
included the Business' line of research products sold or intended for sale to
the academic, industrial and clinical research markets, existing inventory,
property and equipment and certain other assets.  The Company retained the
trade accounts receivable and accounts payable outstanding on the date of sale.
In connection with the sale, the Company wrote off the unamortized goodwill
related to the Business of approximately $343,000.  The sale resulted in a net
gain of approximately $2.7 million.

     The Company also signed a sublease agreement with Calbiochem relating to
the Cambridge facility for a term of three years, at an annual payment equal to
50% of the Company's fixed lease payment

                                      F-10
<PAGE>   34
and related facility costs, plus certain operating costs or approximately
$448,000 per annum.

(4)  PRODUCT DEVELOPMENT CONTRACTS

     Effective April 1, 1986, the Company entered into a collaborative research
agreement (the "Agreement") with Pfizer. On December 14, 1990, the Company and
Pfizer entered into an agreement to extend the Agreement ("Extension
Agreement") for up to an additional five years effective April 1, 1991.
Pursuant to the Extension Agreement, Pfizer agreed to provide the Company with
up to $16,225,000 in research funding, essentially on a ratable basis, over the
five-year period ending April 1, 1996.  In consideration for the funding
commitments by Pfizer, the Company has granted to Pfizer certain rights to
human cancer therapeutic products developed by the Company.

     On October 4, 1991, the Company and Becton established a collaborative
research program to develop cancer diagnostic products. The Company and Becton
share equally the cost of discovery phase and pre-clinical research and
development. If Food and Drug Administration ("FDA") approval is obtained,
these products will be sold to the clinical markets by Becton.  The Company
will retain some manufacturing rights. Unless terminated by either party, the
collaborative research program will continue for an initial five-year term
through September 30, 1996.

     Effective December 31, 1991, the Company entered into a collaborative
research agreement with Wyeth. This agreement was extended and expanded in
January 1994 for an additional 3 years to provide for additional funding of
approximately $4,300,000.

     Effective January 1, 1993, the Company and Marion entered into a
collaborative research and license agreement to identify and develop
transcription-based drugs to treat certain indications in the area of
cardiovascular disease.  The agreement provided for payments to the Company of
$11,000,000 in research funding and license fees over a five year period
through December 31, 1997. Marion invested $6,000,000 in common stock (See Note
8(b)).  The payments with respect to 1996 and 1997 are being consolidated into
a proposed new research agreement.

     On January 4, 1993, the Company and Hoechst AG entered into a
collaborative research agreement to jointly develop gene transcription-based
drugs to treat certain indications in the areas of inflammation, viral
infection and metabolic diseases.  In April 1994, the Company and
Hoechst-Roussel, a unit of Hoechst AG, entered into a collaborative agreement
to discover and develop gene transcription-based drugs to treat Alzheimer's
disease.

     On July 18, 1995 Marion was acquired by an affiliate of Hoechst AG.  The
new company was named HMRI.  All of the Company's collaborative agreements with
Marion, Hoechst AG and Hoechst-Roussel have continued under HMRI.  The Company
expects the related programs to continue under one overall agreement in the
future.
                                      F-11
<PAGE>   35
     In April 1995, the Company entered into an agreement with Ciba-Geigy Ltd.
("Ciba") to expand the scope of the two companies' collaborative efforts with
respect to the development of TGF-Beta3 for the treatment of oral mucositis and
other indications.  Under the agreement, the Company will fund development
through Phase I clinical trials and Ciba will fund Phase II and III clinical
trials.  Ciba will pay the Company $10 million if, and at the time, it decides
to initiate Phase IIB. or III clinical trials or, at the option of Ciba, within
four years of the agreement date.  The payment will be characterized, at Ciba's
option, as a milestone payment or a purchase of the Company's common stock at
the higher of $5.50 per share or the then current market price.  In exchange
for such payment, Ciba's license will be expanded to include all other
indications for TGF-Beta3.

     Under the terms of aformentioned collaborative research agreements, the
collaborative partners will pay the Company royalties ranging from 2% to 10% of
net sales of products resulting from these research programs.  To date, the
Company has not received any royalties pursuant to these agreements. The
Company or its collaborative partners may terminate each of the collaborative
research programs upon the occurrence of certain events.

     Total collaborative research revenues under the aforementioned agreements
are as follows:
<TABLE>
<CAPTION>
                               YEARS ENDED SEPTEMBER 30,
                               -------------------------

                           1995           1994          1993
                           ----           ----          ----
 <S>                   <C>           <C>            <C>
 Related Parties:

  Pfizer               $3,505,427    $3,373,573     $4,768,606

  Becton                1,400,094     1,392,314      1,334,534

  HMRI                  3,405,335     3,026,532      2,211,936
                       ----------    ----------     ----------

                       $8,310,856    $7,792,419     $8,315,076

 Other                  1,375,000     1,296,876      1,081,533
                       ----------    ----------     ----------

 Total                 $9,685,856    $9,089,295     $9,396,609
                       ==========    ==========     ==========
</TABLE>





                                      F-12
<PAGE>   36
(5)  PROPERTY, EQUIPMENT AND LEASEHOLD IMPROVEMENTS

     Property, equipment and leasehold improvements are recorded at cost and
consist of the following:

<TABLE>
<CAPTION>
                                                         SEPTEMBER 30,  
                                      ESTIMATED        -----------------
                                     LIFE (YEARS)      1995         1994
                                     ------------      ----         ----
<S>                                <C>             <C>          <C>
Laboratory equipment                   5-15        $6,765,012   $6,376,997
Office furniture and                        
  equipment                            5-10         1,622,524    1,708,534
Automobile equipment                   3               12,697       12,697
Leasehold improvements             Life of lease    4,176,290    4,214,228
                                                    ---------    ---------
                                                   12,576,523   12,312,456
Less: accumulated
  depreciation and
  amortization                                      6,867,008    5,758,219
                                                    ---------    ---------
Net property,
  equipment and
  leasehold
  improvements                                     $5,709,515   $6,554,237
                                                   ==========   ==========
</TABLE>

(6)  INTANGIBLE ASSETS

     The components of intangible assets are as follows:

<TABLE>
<CAPTION>
                            SEPTEMBER 30,    
                    ----------------------------
                        1995            1994
                        ----            ----
     <S>            <C>              <C>
     Patents        $7,945,038       $ 8,712,250
     Goodwill          685,543         1,957,609
                    ----------       -----------
                    $8,630,581       $10,669,859
                    ==========       ===========
</TABLE>

The above amounts reflect accumulated amortization of $5,808,119 and
$5,236,407 at September 30, 1995 and 1994, respectively.



(7)  ACCOUNTS PAYABLE AND ACCRUED EXPENSES


     Accounts payable and accrued expenses at September 30, 1995 and 1994 are
comprised of:
<TABLE>
<CAPTION>
                                                        SEPTEMBER 30,  
                                                     ------------------
                                                     1995          1994
                                                     ----          ----
<S>                                                <C>          <C>
Accounts payable                                   $1,497,601   $1,326,744
Accrued future lease escalations                      355,516      282,718
Accrued payroll and employee benefits                 243,073      155,039
Accrued incentive compensation                        424,705      426,189
Accrued expenses                                      304,807      331,481
                                                      -------   ----------
                                                   $2,825,702   $2,522,171
                                                   ==========   ==========
</TABLE>

                                     F-13
<PAGE>   37

(8)  STOCKHOLDERS' EQUITY

(a)  Stock Option Plans

     The Company has established three stock option plans for its employees,
officers, directors and consultants.  The Plans are administered by the
Compensation Committee of the Board of Directors, which may grant either
non-qualified or incentive stock options.  The Committee determines the
exercise price and vesting schedule at the time the option is granted.  Options
vest over various periods and may expire no later than 10 years from date of
grant. The total authorized shares under these plans is 3,400,000.

     The following table summarizes changes in the number of common shares
subject to options in the stock option plans during the years ended September
30, 1995, 1994 and 1993:

<TABLE>
<CAPTION>
                                             1995        1994       1993
                                             ----        ----       ----
<S>                                        <C>       <C>        <C>
Beginning of year                          2,048,325  1,644,945  1,278,045

  Granted-$3.50 to $4.13
  per share in 1995;
  $4.00 to $4.75
  per share in 1994;
  $4.38 to $5.25 per
  share in 1993;                             803,000    475,500    498,000

Exercised                                   (206,025)   (10,700)  (109,729)

Cancelled                                   (624,021)   (61,420)   (21,371)
                                            --------- ---------- ----------

End of year-$1.75 to
   $5.63 per share                         2,021,279  2,048,325  1,644,945
                                           ========= ========== ==========

Exercisable                                  952,883  1,081,874    790,899
                                             ======= ========== ==========
</TABLE>


     At September 30, 1995, the Company has reserved 2,021,079 shares of its
authorized common stock for all shares issuable under option.

     On March 22, 1995, the Company granted the right to current option holders
to surrender their current options in exchange for replacement options on the
basis of three replacement options for four options surrendered.  The exercise
price of the replacement options was $3.50 per share, which was greater than
the market price on the date of exchange. The replacement options vested 25%
upon grant with the remaining 75% vesting pro rata on a monthly basis over the
following three years.  Option holders surrendered 606,000 options in exchange
for 454,500 replacement options.

                                      F-14
<PAGE>   38
(b)  Sale of Stock to Marion Merrell Dow

     In December 1992, the Company entered into the common stock purchase and
common stock warrant purchase agreements with Marion.  The company issued
1,090,909 shares of common stock at $5.50 per share and a warrant to purchase
up to 500,000 additional shares at $5.50 per share which are exercisable during
the period December 1994 to December 1999.  The proceeds to the Company were
$6,000,000.


(c)  Sale of Stock to Ciba-Geigy

     On April 19, 1995, Ciba-Geigy purchased 909,091 shares of the Company's
common stock at $5.50 per share for an aggregate purchase price of $5,000,000.


(d)  Stock Purchase Plan

     On May 1, 1993, the Company adopted an Employee Stock Purchase Plan under
which eligible employees may contribute up to 10% of their base earnings toward
the quarterly purchase of the Company's Common Stock.  The employees purchase
price is derived from a formula based on the fair market value of the common
stock.  No compensation expense is recorded in connection with the plan.
During fiscal 1995, 1994 and 1993, 3,216, 2,074 and 211 shares were issued with
18, 13 and 10 employees participating in the plan, respectively.

(9)  INCOME TAXES

There is no provision (benefit) for federal or state income taxes, since the
Company has incurred operating losses since inception and has established a
valuation allowance equal to the total deferred tax asset.

The tax effect of temporary differences, net operating loss carry-forwards and
research and development tax credit carry-forwards as of September 30, 1994 and
1995 are as follows:

<TABLE>
<CAPTION>
                                             1995           1994   
                                          ----------    -----------
<S>                                      <C>            <C>        
Deferred tax assets:                                               
                                                                   
Net operating loss carryforward           $8,122,444    $6,421,863 
Research & development credits               554,838       373,500 
Inventory                                       -          838,361 
Intangible assets                          1,274,336       863,220 
Other                                        469,396       227,958 
                                           ---------      -------- 
                                         $10,421,014    $8,724,902 
Valuation allowance                      (10,421,014)   (8,724,902)
                                         -----------    ---------- 
                                          $    -        $    -     
                                          ==========    ========== 
</TABLE>

                                      F-15
<PAGE>   39
As of September 30, 1995, the Company has available federal net operating loss
carry forwards of approximately $24 million which will expire in various years
from 1999 to 2010, and may be subject to certain annual limitations.  The
Company's research and development tax credit carry forwards noted above expire
in various years through from 1999 to 2010.


(10) COMMITMENTS AND CONTINGENCIES

(a)  Lease Commitments

     The Company leases office, operating and laboratory space under various
lease agreements.

     Rent expense was approximately $750,000, $743,000, and $656,000 for the
fiscal years ended September 30, 1995, 1994, and 1993, respectively.

     The following is a schedule by fiscal years of future minimum rental
payments required as of September 30, 1995, assuming expiration of the lease
for the Uniondale facility on June 30, 2006 and the Cambridge facility on
December 31, 2003.


<TABLE>
<S>                                                            <C>
1996                                                           $   587,800
1997                                                               619,375
1998                                                               627,163
1999                                                               644,288
2000 and thereafter                                              4,319,474
                                                                ----------
                                                                $6,798,100
                                                                ==========
</TABLE>

(b)  Contingencies

     The Company has received several letters from other companies and
universities advising the Company that various products being marketed and
research being conducted by the Company may be infringing on existing patents
of such entities.  These matters are presently under review by management and
outside counsel for the Company.  Where valid patents of other parties are
found by the Company to be in place, management will consider entering into
licensing arrangements with the universities and/or other companies or
discontinuing the sale or use of any infringing products. Management believes
that the ultimate outcome of these matters will not have a material adverse
effect on the financial position of the Company.

(11) RELATED PARTY TRANSACTIONS

     Effective January 1, 1993, the Company compensates its independent outside
directors on a $1,000 retainer per month.  This amount increased to $1,500
effective January 1, 1995.  For the years ended September 30, 1995, 1994 and
1993 such fees amounted to $99,000, $66,000 and $45,000, respectively.  The
Company also has compensated four directors for consulting services performed.
Two
                                      F-16
<PAGE>   40
directors have consulting agreements, the other two were paid on a per diem
basis.  For the years ended September 30, 1995, 1994 and 1993, consulting
services in the amounts of $90,000, $85,000 and $56,000 respectively, were paid
by the Company pursuant to these arrangements.

     One director is a partner in a law firm which represents the Company on
its patent and license matters.  Fees paid to this firm for the year ended
September 30, 1995 are estimated to be approximately $260,000.  Fees paid for
this firm for the years ended September 30, 1994 and 1993 amounted to
approximately $372,000 and $538,000, respectively.

(12)  EMPLOYEE SAVINGS AND INVESTMENT PLAN

     The Company sponsors an Employee Savings and Investment Plan under Section
401(k) of the Internal Revenue Code.  The plan allows employees to defer from
2% to 10% of their income on a pre-tax basis through contributions into
designated investment funds.  For each dollar the employee invests up to 6% of
his or her earnings, the Company will contribute an additional 50 cents into
the funds.  For the years ended September 30, 1995, 1994, and 1993, the
Company's expenses related to the plan were approximately $180,000, $168,000
and $131,000, respectively.

(13)  EMPLOYEE RETIREMENT PLAN

     On November 10, 1992, the Company adopted a plan which provides
postretirement medical and life insurance benefits to eligible employees, board
members and qualified dependents.  Eligibility is determined based on age and
service requirements.  These benefits are subject to deductibles, co-payment
provisions and other limitations.

     The Company utilizes SFAS No. 106, "Employer's Accounting for Post
Retirement Benefits Other Than Pensions" to account for the benefits to be
provided by the plan.  Under SFAS No. 106 the cost of post retirement medical
and life insurance benefits is accrued over the active service periods of
employees to the date they attain full eligibility for such benefits.  As
permitted by SFAS No. 106, the Company elected to amortize over a 20 year
period the accumulated post retirement benefit obligation related to prior
service costs.





                                      F-17
<PAGE>   41

     Net postretirement benefit cost includes the following components:

<TABLE>
<CAPTION>
                                  1995       1994        1993
                                  ----       ----        ----
 <S>                           <C>        <C>         <C>
 Service cost for benefits
  earned during the period     $107,175   $ 65,830    $ 70,867

 Interest cost on accumulated
  postretirement benefit
  obligation                     47,181     15,591      19,742
 Amortization of unrecognized
  net loss (gain)                 5,855    (20,402)        -


 Amortization of initial
  benefits attributable to
  past service                   17,549     17,549      19,266
                               --------   --------    --------

 Net postretirement benefit
 cost                          $177,760   $ 78,568    $109,875
                               ========   ========    ========
</TABLE>



     The accrued postretirement benefit cost at September 30, 1995 and 1994
were as follows:

<TABLE>
<CAPTION>
                                                                 1995               1994     
                                                                 ----               ----     
<S>                                                           <C>                 <C>       
Accumulated post retirement benefit obligation-                                             
  fully eligible active plan participants                     $790,437            $285,582  
Unrecognized cumulative net gain (loss)                       (121,517)            223,127  
Unrecognized transition obligation                            (302,717)           (320,266) 
                                                              ---------            -------- 
Accrued postretirement benefit cost                           $366,203            $188,443  
                                                              =========           ========  
</TABLE>

         The accumulated postretirement benefit obligation was determined using
a discount rate of 7.5 percent and a health care cost trend rate of
approximately 12 percent decreasing to 6 percent in year 1999 and thereafter
for 1995 and 1994.  Increasing the assumed health care cost trend rates by one
percentage point in each year and holding all other assumptions constant would
increase the accumulated post-retirement benefit obligation as of September 30,
1995 and 1994 by approximately $106,000 and $94,000 respectively.





                                      F-18
<PAGE>   42

ITEM 9.  CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON
         ACCOUNTING AND FINANCIAL DISCLOSURE

         None.





                                                                              24
<PAGE>   43
                                    PART III


ITEM 10.  DIRECTORS AND EXECUTIVE OFFICERS OF REGISTRANT

     The information required by this item is incorporated by reference to the
similarly named section of the  Registrant's Proxy Statement for its 1996
Annual Meeting to be filed with the Securities and Exchange Commission not
later than 120 days after September 30, 1995.  (The "1996 Proxy")


ITEM 11.  EXECUTIVE COMPENSATION

     The information required by this item is incorporated by reference to the
similarly named section of the Registrant's 1996 Proxy.


ITEM 12.  SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

     The information required by this item is incorporated by reference to the
similarly named section of the Registrant's 1996 Proxy.


ITEM 13.  CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

     The information required by this item is incorporated by reference to the
similarly named section of the Registrant's 1996 Proxy.





                                                                              25
<PAGE>   44
                                    PART IV


ITEM 14.  EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS ON FORM 8-K



(a)  (1)  The following consolidated financial statements are  included in Part
          II, Item 8:

          Consolidated Balance Sheets
          Consolidated Statements of Operations
          Consolidated Statements of Stockholders' Equity
          Consolidated Statements of Cash Flows
          Notes to Consolidated Financial Statements

     (2)  Financial statement schedules:

     All schedules are omitted as the required information is inapplicable or
     the information is presented in the financial statements or related notes.

     (3)  Exhibits - The list of all exhibits appears on pages 26, 27, 28,
          and 29.

(b)  Reports on Form 8-K

     None.





                                      26
<PAGE>   45

                                  SIGNATURES


     Pursuant to the requirements of Section 13 or 15(d) of the Securities and
Exchange Act of 1934, the Company has duly caused this report to be signed on
its behalf by the undersigned, thereunto duly authorized.


                                                ONCOGENE SCIENCE, INC.

                                                By   /s/ GARY E. FRASHIER
                                                  -----------------------------
                                                     Gary E. Frashier
                                                     Chief Executive Officer

Date: December 20, 1995

     Pursuant to the requirements of the Securities Exchange Act of 1934, this
report has been signed below by the following persons on behalf of the Company
and in the capacities and on the dates indicated.



<TABLE>
<CAPTION>
     Signature                                 Title                         Date
     ---------                                 -----                         ----
<S>                                   <C>                                  <C>
/s/ GARY E. FRASHIER                  Chief Executive Officer              December 13, 1995
- -----------------------------         and Director
    Gary E. Frashier

/s/ STEVE M. PELTZMAN                 President, Chief Operating           December 13, 1995
- -----------------------------         Officer and Director
    Steve M. Peltzman

/s/ J. GORDON FOULKES                 Vice President, Chief Scientific     December 13, 1995
- -----------------------------         Officer and Director
    J. Gordon Foulkes, Ph.D.          

/s/ ROBERT L. VAN NOSTRAND            Vice President, Finance and          December 13, 1995
- -----------------------------         Administration (Principal Financial
    Robert L. Van Nostrand            Officer)
                                      
/s/ EDWIN A. GEE                      Director                             December 13, 1995
- -----------------------------
    Edwin A. Gee, Ph.D.

/s/ GARY TAKATA                       Director                             December 13, 1995
- -----------------------------
    Gary Takata

/s/ G. MORGAN BROWNE                  Director                             December 13, 1995
- -----------------------------
    G. Morgan Browne

/s/ WALTER MILLER                     Director                             December 13, 1995
- -----------------------------
    Walter Miller

/s/ JOHN P. WHITE                     Director                             December 13, 1995
- -----------------------------
    John P. White, Esq.

/s/ JOHN H. FRENCH, II                Director                             December 13, 1995
- -----------------------------
    John H. French, II

/s/ WALTER M. LOVENBERG               Director                             December 13, 1995
- -----------------------------
    Walter M. Lovenberg, Ph.D.                                                         


                                                                                          27
</TABLE>


                                                                               

<PAGE>   46
                               INDEX TO EXHIBITS


<TABLE>
<CAPTION>
          Exhibits                                                 Page No.
          --------                                                 --------
          <S>        <C>
          3.1*       Certificate of Incorporation, as
                     amended

          3.2*       By-Laws

          10.1       1985 Stock Option Plan (1)

          10.2       1989 Incentive and Non-Qualified Stock
                     Option
                     Plan (3)

          10.3       1993 Incentive and Non-Qualified Stock
                     Option Plan (filed as an exhibit to
                     the Company's Registration Statement
                     on Form S-8 (File No. 33-64713), and
                     incorporated herein by reference)

          10.4       1993 Employee Stock Purchase Plan
                     (filed as an exhibit to the Company's
                     Registration Statement on Form S-8
                     (File No. 33-60182), and incorporated
                     herein by reference)

          10.5       Employment Agreement dated as of
                     February 9, 1990 between the Company
                     and Gary E. Frashier (3)

          10.6       Employment Agreement dated as of
                     August 27, 1991 between the Company
                     and Steven M. Peltzman (4)

          10.7       Employment Agreement dated
                     December 30, 1986 between the Company
                     and Gordon Foulkes (3)

          10.8       Consulting Agreement between the
                     Company and Dr. Edwin A. Gee (1)

          10.9       Lease dated as of October 12, 1990
                     between the Company and Charles
                     Bergwell (3)

          10.10      First Amendment Lease dated April 2,
                     1993 between the Company and the
                     Trustees of the Cambridge East Trust
                     (filed as an exhibit to the Company's
                     Annual Report on Form 10-K for the
                     fiscal year ended September 30, 1993,
                     and incorporated herein by reference)

          10.11      Form of Warrant Purchase Agreement (1)

          10.12      Agreement dated as of February 18,
                     1987 between The University of
                     Massachusetts and Applied
                     bioTechnology, Inc. (2)
</TABLE>

                                                                             
                                                                              28
<PAGE>   47

<TABLE>
          <S>        <C>
          10.13      Letter Agreement dated October 1, 1991
                     among AbT Acquisition Corp., the
                     Company and E.I. DuPont de Nemours and
                     Company (2)

          10.14      Agreement dated as of September 16,
                     1991 between Applied bioTechnology,
                     Inc. and Becton Dickinson and Company
                     (2)

          10.15      Amendment and Consent to Assignment
                     dated as of October 4, 1991 between
                     the Company and Becton Dickinson and
                     Company (2)

          10.16      Collaborative Research Agreement dated
                     as of October 4, 1991 between the
                     Company and Becton Dickinson and
                     Company (2)

          10.17      License Agreement between the Company
                     and Becton Dickinson and Company (2)

          10.18      Amendment dated December 5, 1991 to
                     License Agreement between the Company
                     and Becton Dickinson and Company (4)

          10.19*     OSI Royalty Free License Agreement
                     dated April 1, 1986 between the
                     Company and Pfizer Inc.

          10.20*     Pfizer Royalty Free License Agreement
                     dated April 1, 1986 between the
                     Company and Pfizer Inc.

          10.21*     Royalty Agreement dated April 1, 1986
                     between the Company and Pfizer Inc.

          10.22      License Agreement dated December 14,
                     1990 between the Company and Pfizer
                     Inc. (3)

          10.23      Collaborative Research Agreement dated
                     April 1, 1991 between the Company and
                     Pfizer Inc. (3)

          10.24      Collaborative Research Agreement dated
                     as of December 31, 1991 between the
                     Company and American Home Products
                     Corporation (5)

          10.25      Common Stock Purchase Warrant granted to Marion
                     Merrell Dow, Inc. dated December 11, 1992 (5)

          10.26      Collaborative Research and License
                     Agreement dated December 11, 1992
                     between the Company and Marion Merrell
                     Dow, Inc. (5)

          10.27*     Collaborative Agreement dated as of
                     April 19, 1995 between the Company and
                     Ciba-Geigy Limited

          10.28*     Letter Agreement dated as of April 19,
                     1995 between the Company and
                     Ciba-Geigy Limited                                 
</TABLE>

                                                                              29
<PAGE>   48

<TABLE>
          <S>        <C>
          10.29*     Registration Rights Agreement dated as
                     of April 19, 1995 between the Company
                     and Ciba-Geigy Limited

          10.30      Asset Purchase Agreement dated
                     June 26, 1995 among the Company,
                     Calbiochem-Novabiochem International,
                     Inc. and Calbiochem-Novabiochem
                     Corporation (6)

          10.31      Sublease dated August 2, 1995 between
                     the Company and Calbiochem-Novabiochem
                     Corporation (6)

          10.32      New Product License Right of First
                     Refusal Agreement dated August 2, 1995
                     between the Company and
                     Calbiochem-Novabiochem Corporation (6)

          21*        Subsidiaries of the Company

          23*        Consent of KPMG Peat Marwick, LLP,
                     independent public accountants

          27*        Financial Data Schedule 
</TABLE>
- ------------------------                     
*    Filed herewith.

(1)  Filed as an exhibit to the Company's registration statement on Form S-1
     (File No. 33-3148), and incorporated herein by reference.

(2)  Filed as an exhibit to the Registrant's registration statement on Form
     S-2, as amended (File No. 33-42369), and incorporated herein by reference.

(3)  Filed as an exhibit to the Company's Annual Report on Form 10-K for the
     fiscal year ended September 30, 1990, and incorporated herein by
     reference.

(4)  Filed as an exhibit to the Company's Annual Report on Form 10-K for the
     fiscal year ended September 30, 1991, and incorporated herein by
     reference.

(5)  Filed as an exhibit to the Company's Annual Report on Form 10-K for the
     fiscal year ended September 30, 1992, as amended, and incorporated herein
     by reference.

(6)  Filed as an exhibit to the Company's Current Report on Form 8-K dated
     August 2, 1995, and incorporated herein by reference.

                                                                             
                                                                             30

<PAGE>   1
                                                                     EXHIBIT 3.1


                            CERTIFICATE OF AMENDMENT

                                       OF

                          CERTIFICATE OF INCORPORATION

                                       OF

                             ONCOGENE SCIENCE, INC.


            I, the President of Oncogene Science, Inc., a corporation organized
and existing under the laws of the State of Delaware (the "Corporation"), do
hereby certify that (i) Article Fourth of the Corporation's Certificate of
Incorporation has been amended in its entirety to read as set forth below, and
(ii) such amendment was duly adopted in accordance with the provisions of
Section 242 of the General Corporation Law of the State of Delaware.

            FOURTH.  The total number of shares of stock that the Corporation
            shall have authority to issue is 50,000,000 shares of common stock,
            having a par value of $.01 per share, all of the same class.

            IN WITNESS WHEREOF, I have hereunto set my hand and seal as of the
31st day of March, 1993.


(Corporate Seal)

Attest:


/s/ Theresa R. Dragone                          /s/ Gary E. Frashier   (SEAL)
- -----------------------------                   -----------------------
Theresa R. Dragone                              Gary E. Frashier, President
Secretary
<PAGE>   2
                            CERTIFICATE OF AMENDMENT

                                       OF

                          CERTIFICATE OF INCORPORATION

                                       OF

                             ONCOGENE SCIENCE, INC.

                   -----------------------------------------
                   Adopted in accordance with the provisions
                   of Section 242 of the General Corporation
                          Law of the State of Delaware
                   -----------------------------------------

            We, the President and Secretary of ONCOGENE SCIENCE, INC., a
corporation existing under the laws of the State of Delaware, do hereby certify
as follows:

            FIRST:  That Article IX of the Certificate of Incorporation of said
corporation has been amended in its entirety to read as follows:

                                   ARTICLE IX

                         INDEMNIFICATION AND INSURANCE

                  SECTION 1.  Right to Indemnification.  Each person who was or
            is made a party or is threatened to be made a party to or is
            involved in any threatened, pending or completed action, suit or
            proceeding, whether civil, criminal, administrative or
            investigative ("Proceeding"), by reason of the fact that he, or a
            person of whom he is the legal representative, is or was the
            director, officer, employee or agent of the Corporation or is or
            was serving at the request of the Corporation as a director,
            officer, employee or agent of another corporation or of a
            partnership, joint venture, trust or other enterprise, including
            service with respect to employee benefit plans, whether the basis
            of such Proceeding is alleged action in an official capacity as a
            director, officer, employee or agent or in any other capacity while
            serving as a director, officer, employee or agent, shall be
            indemnified and held harmless by the Corporation to the fullest
            extent authorized by the Delaware General Corporation Law, as the
            same exists or may hereafter be amended (out, in the case of





                                      -1-
<PAGE>   3
            any such amendment, only to the extent that such amendment permits
            the Corporation to provide broader indemnification rights than said
            law permitted the Corporation to provide prior to such amendment),
            against all expenses, liability and loss (including attorneys'
            fees, judgments, fines, ERISA excise taxes or penalties and amounts
            paid or to be paid in settlement) reasonably incurred or suffered
            by such person in connection therewith; provided, however, that the
            Corporation shall indemnify any such person seeking indemnity in
            connection with a Proceeding (or part thereof) initiated by such
            person only if the proceeding (or part thereof) was authorized by
            the Board of Directors of the Corporation.  The right to
            indemnification conferred in this Section 1 shall be a contract
            right and shall include the right to be paid by the Corporation
            expenses incurred in defending any such Proceeding in advance of
            its final disposition; provided, however, that if the Delaware
            General Corporation Law requires, the payment of such expenses
            incurred by a director or officer in his capacity as a director or
            officer (and not in any other capacity in which service was or is
            rendered by such person while a director or officer, including,
            without limitation, service to an employee benefit plan) in advance
            of the final disposition of such Proceeding, shall be made only
            upon delivery to the Corporation of an undertaking, by or on behalf
            of such director or officer, to repay all amounts so advanced if it
            should be determined ultimately that such director of officer is
            not entitled to be indemnified under this Section or otherwise.

                  SECTION 2.  Non-Exclusivity of Rights.  The rights conferred
            on any person by Section 1 shall not be exclusive of any other
            right which such person may have or hereafter acquire under any
            statute, provision of the Certificate of Incorporation, by-laws,
            agreement, vote of stockholders or disinterested directors, or
            otherwise.

                  SECTION 3.  Limitation of Liability of Directors.  A director
            of the Corporation shall not be personally liable to the
            Corporation or its stockholders for monetary damages for breach of
            fiduciary duty as a director except for liability (i) for any
            breach of the director's duty of loyalty to the Corporation or its
            stockholders, (ii) for acts or omissions not in good faith or which
            involve intentional misconduct or a knowing violation of law, (iii)
            under Section 174 of the Delaware General





                                      -2-
<PAGE>   4
            Corporation Law, or (iv) for any transaction from which the
            director derived an improper personal benefit.

                  SECTION 4.  Insurance.  The Corporation may maintain
            insurance, at its expense, to protect itself and any such director,
            officer, employee or agent of the Corporation or another
            corporation, partnership, joint venture, trust or other enterprise
            against any such expense, liability or loss, whether or not the
            Corporation would have the power to indemnify such person against
            such expense, liability or loss under the Delaware General
            Corporation Law.

            SECOND:  That such amendment has been duly adopted in accordance
with the provisions of the General Corporation Law of the State of Delaware by
the affirmative vote of the holders of not less than a majority of the
outstanding stock entitled to vote thereon.

            IN WITNESS WHEREOF, we have signed this certificate this 9th day of
April, 1987.

                                                /s/ Robert E. Ivy
                                                ----------------------------
                                                Robert E. Ivy, President


                                    ATTEST:     /s/ Gary Takata
                                                ----------------------------
                                                Gary Takata, Secretary





                                      -3-
<PAGE>   5
                            CERTIFICATE OF AMENDMENT

                                       OF

                          CERTIFICATE OF INCORPORATION

                                       OF

                             ONCOGENE SCIENCE, INC.

                   -----------------------------------------
                   Adopted in accordance with the provisions
                   of Section 242 of the General Corporation
                          Law of the State of Delaware
                   -----------------------------------------

            We, the President and Secretary of ONCOGENE SCIENCE, INC., a
corporation existing under the laws of the State of Delaware, do hereby certify
as follows:

            FIRST:  That Article FOURTH of the Certificate of Incorporation of
said corporation has been amended in its entirety to read as follows:

                  "FOURTH.  The total number of shares of stock which the
            Corporation shall have authority to issue is 20,000,000 shares of
            common stock, of the par value of $.01 per share, all of the same
            class."

            SECOND:  That such amendment has been duly adopted in accordance
with the provisions of the General Corporation Law of the State of Delaware by
the written consent of the holders of not less than a majority of the
outstanding stock entitled to vote thereon and that written notice of the
corporation action has been given to those stockholders who have not consented
in writing, all in accordance with the provisions of Section 228 of the General
Corporation Law.
<PAGE>   6
            IN WITNESS WHEREOF, we have signed this certificate this 18th day
of January, 1986.


                                                /s/ Robert E. Ivy
                                                ----------------------------
                                                Robert E. Ivy, President


                                    ATTEST:     /s/ Gary Takata
                                                ----------------------------
                                                Gary Takata, Secretary





                                      -2-
<PAGE>   7
                            CERTIFICATE OF AMENDMENT

                                       OF

                          CERTIFICATE OF INCORPORATION

                                       OF

                             ONCOGENE SCIENCE, INC.

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

                            (a Delaware corporation)

                        --------------------------------
                         Adopted in accordance with the
                        provisions of Section 241 of the
                         General Corporation Law of the
                               State of Delaware
                        --------------------------------

            THE UNDERSIGNED, Steven Gelles, sole incorporator of ONCOGENE
SCIENCE, INC., does hereby certify:

            FIRST:      That the Certificate of Incorporation of ONCOGENE
SCIENCE, INC. (the "Corporation") was filed in the office of the Secretary of
State of Delaware on March 6, 1983 and a certified copy thereof was recorded in
the office of the Recorder of Kent County, Delaware on March 16, 1983.

            SECOND:     That the Corporation has not received payment for its
stock.

            THIRD:      That the Certificate of Incorporation of the
Corporation is amended as follows:

                  (i)   By striking out paragraph FIRST thereof as it now
                        exists and inserting in lieu thereof ARTICLE I, reading
                        as follows:

                                   ARTICLE I

                                      NAME

             The name of the corporation is ONCOGENE SCIENCE, INC.

                  (ii)  By striking out paragraph SECOND thereof as it now
                        exists and inserting in lieu thereof ARTICLE II,
                        reading as follows:
<PAGE>   8
                                   ARTICLE II

                     REGISTERED OFFICE AND REGISTERED AGENT

            The registered office of the Corporation in the State of Delaware
is located at 229 South State Street, City of Dover, County of Kent.  The name
and the address of the registered agent of the Corporation in the State of
Delaware is The Prentice-Hall Corporation System, Inc., 229 South State Street,
Dover, Delaware.

                  (iii) By striking out paragraph THIRD thereof as it now
                        exists and inserting in lieu thereof ARTICLE III,
                        reading as follows:

                                  ARTICLE III

                         CORPORATE PURPOSES AND POWERS

            The nature of the business of the Corporation, or the objects or
purposes to be transacted, promoted or carried on by the Corporation are any
and all lawful acts or activities for which corporations may be organized under
the General Corporation Law of Delaware, including but not limited to research
and development, manufacture, production, purchase or acquisition, and sale,
licensing, leasing, or disposition of materials, supplies, substances,
chemicals or equipment used or useful in the field of biotechnology or in any
other field in which such materials, supplies, substances, chemicals or
equipment may profitably be used.

                  (iv)  By striking out paragraph FOURTH thereof as it now
                        exists and inserting in lieu thereof ARTICLE IV,
                        reading as follows:

                                   ARTICLE IV

                                 CAPITAL STOCK

            The amount of the total authorized capital stock of this
Corporation is One Hundred Thousand Dollars ($100,000) consisting of Ten
Million (10,000,000) common shares, with a par value of one cent ($.01) each.

                  (v)   By striking out paragraph FIFTH thereof as it now
                        exists and inserting in lieu thereof ARTICLE V, reading
                        as follows:

                                   ARTICLE V

                                  INCORPORATOR

            The name and mailing address of the sole incorporator of the
Corporation is:





                                      -2-
<PAGE>   9
            Name                    Address
            ----                    -------

            Steven Gelles           122 East 42nd Street
                                    Suite 606
                                    New York, New York 10168

                  (vi)  By adding thereto additional ARTICLES VI - XI, reading
                        as follows:

                                   ARTICLE VI

                          POWERS OF BOARD OF DIRECTORS

            In addition to and not in limitation of the powers conferred by
statute, the board of directors of the Corporation expressly is authorized:

                  (a)   To make, adopt, alter, amend or repeal the by-laws,
      except as otherwise expressly provided in any by-law adopted by the
      holders of Capital Stock of the Corporation entitled to vote thereon.
      Any by-law may be altered, amended or repealed by the holders of Capital
      Stock of the Corporation entitled to vote thereon at any annual meeting
      or at any special meeting called for that purpose;

                  (b)   To authorize and cause to be executed mortgages, liens,
      and other security interests upon the real and personal property of the
      Corporation;

                  (c)   To determine the use and disposition of any surplus and
      net profits of the Corporation including, without limitation by
      specification, the determination of the amount of working capital
      required by the Corporation, to set apart out of any of the funds of the
      Corporation, whether or not available for dividends, a reserve or
      reserves for any proper purpose and to abolish any such reserve in the
      manner in which it was created;

                  (d)   To designate, by resolution passed by a majority of the
      members of the board of directors, one or more committees, each
      consisting of two or more directors of the Corporation which, to the
      extent provided in the resolution designating the committee or provided
      in the by-laws of the Corporation, have and may exercise, subject to the
      provisions of the General Corporation Law of Delaware, all the powers and
      authority of the board of directors in the management of the business and
      affairs of the Corporation.  Such committee or committees may authorize
      the seal of the Corporation to be affixed to all papers which may require
      it.  Such committee or committees shall have such name or names as may be
      provided in the by-laws of the Corporation or as may be determined from
      time to time by resolution adopted by the board of directors;





                                      -3-
<PAGE>   10
                  (e)   To grant rights or options entitling the holders
      thereof to purchase from the Corporation shares of its Capital Stock
      evidenced by or in such instrument or instruments as shall be approved by
      the board of directors.  The terms upon which, the time or times at or
      within which, the persons to whom, and the price or prices at which any
      such rights or options may be issued and any shares of Capital Stock may
      be purchased from the Corporation upon the exercise of any such right or
      option shall be such as shall be fixed in a resolution or resolutions
      adopted by the board of directors providing for the creation and issuance
      of such rights or options.  In the absence of actual fraud in the
      transaction, the judgment of the board of directors as to the
      consideration for the issuance of such rights or options and the
      sufficiency thereof shall be conclusive.  No such rights or options shall
      be invalidated or in any way affected by the fact that any director shall
      be a grantee thereof or shall vote for the issuance of such rights or
      options to himself or for any plan pursuant to which he may receive any
      such rights or options;

                  (f)   To adopt such plans as from time to time may be
      approved by the board of directors for the purchase by officers or
      employees of the Corporation and of any corporation either affiliated
      with or a subsidiary of the Corporation of shares of Capital Stock of the
      Corporation.  The terms upon which, the time or times at or within which
      and the price or prices at which shares of Capital Stock may be purchased
      from the Corporation pursuant to such plan shall be fixed in the plan by
      the board of directors.  No such plan which is not at the time of
      adoption unreasonable or unfair shall be invalid or in any way affected
      because any director shall be entitled to purchase shares of Capital
      Stock of the Corporation thereunder and shall vote for such plan;

                  (g)   To adopt or assume and carry out such plans as from
      time to time may be approved by the board of directors for the
      distribution among the officers or employees of the Corporation and of
      any corporation which is affiliated with or a subsidiary of the
      Corporation, or any of them, in addition to their regular salaries, of
      part of the earnings of the Corporation, in consideration for or in
      recognition of services rendered by such officers or employees or as an
      inducement to future efforts.  No such plan which is not at the time of
      adoption or assumption unreasonable or unfair shall be invalidated or in
      any way affected because any director shall be a beneficiary thereunder
      or shall vote for any plan under which he may benefit or for any
      distribution thereunder in which he may participate;

                  (h)   To adopt such pension, profit sharing, retirement,
      deferred compensation or other employee benefit plans or provisions as
      may, from time to time, be approved by the board of directors, providing
      for pensions, profit sharing, retirement income, deferred compensation or
      other benefits for officers or employees of the Corporation and of any
      corporation which is affiliated with or a subsidiary of the Corporation,
      or any of them, in consideration for or in recognition of the services
      rendered by such officers or employees or as an inducement to future
      efforts.  No





                                      -4-
<PAGE>   11
      such plan or provision, which is not at the time of adoption unreasonable
      or unfair shall be invalidated or in any way affected because any
      director shall be a beneficiary thereunder or shall vote for any plan or
      provision under which he may benefit; and

                  (i)   To exercise, in addition to the powers and authorities
      herein or by law conferred upon the board of directors, any such powers
      and authorities and do all such acts and things as may be exercised or
      done by the Corporation subject, nevertheless, to the provisions of the
      General Corporation Law of Delaware, this certificate of incorporation
      and any by-laws from time to time adopted by the holders of Capital Stock
      of the Corporation entitled to vote thereon.

                                  ARTICLE VII

              MEETINGS AND CONSENTS OF STOCKHOLDERS AND DIRECTORS;
                   CORPORATION BOOKS; ELECTIONS OF DIRECTORS;
                                  AND NOTICES

            Meetings of holders of Capital Stock of the Corporation and of the
board of directors and of any committee thereof may be held outside the State
of Delaware if the by-laws so provide.  Except as otherwise provided by law or
by this certificate of incorporation, any action required to be taken at any
annual, or special meeting of stockholders of the Corporation or any action
which may be taken at any annual or special meeting of such stockholders may be
taken without a meeting, without prior notice and without a vote, if a consent
in writing, setting forth the action so taken, shall be signed by the holders
of outstanding Capital Stock having not less than the minimum number of votes
that would be necessary to authorize or to take such action at a meeting at
which all shares of Capital Stock entitled to vote thereon were present and
voted.  Prompt notice of the taking of the corporate action without a meeting
by less than unanimous written consent shall be given to those stockholders who
have not consented in writing.  Any action required or permitted to be taken at
any meeting of the board of directors or of any committee thereof may be taken
without a meeting as provided by statute if the by-laws of the Corporation so
provide.  Except as otherwise provided by law, the books of the Corporation may
be kept outside the State of Delaware at such place or places as may be
designated from time to time by the board of directors or in the by-laws of the
Corporation.  The elections of directors need not be by ballot unless the
by-laws of the Corporation so provide.  Any notice permitted or required by
this certificate of incorporation shall be written, signed by the sender and
mailed, postage prepaid, in the United States by certified or registered mail.

                                  ARTICLE VIII

                    TRANSACTIONS WITH DIRECTORS AND OFFICERS

            No contract or transaction between the Corporation and one or more
of its directors or officers or between the Corporation and any other
corporation, partnership,





                                      -5-
<PAGE>   12
association or other organization, in which one or more of its directors or
officers are directors or officers or have a financial interest, shall be void
or voidable solely for such reason or solely because the director or officer is
present at or participates in the meeting of the board of directors or
committee thereof which authorizes the contract or transaction or solely
because his or their votes are counted for such purpose if: (a) The material
facts as to his relationship or interest and as to the contract or transaction
are disclosed or are known to the board of directors or the committee and the
board of directors or the committee in good faith authorizes the contract or
transaction by the affirmative vote of a majority of the disinterested
directors even though the disinterested directors may be less than a quorum; or
(b) the material facts as to his relationship or interest and as to the
contract or transaction are disclosed or are known to the stockholders entitled
to vote thereon and the contract or transaction is specifically approved in
good faith by vote of the stockholders; or (c) the contract or transaction is
fair as to the Corporation as of the time it is authorized, approved or
ratified by the board of directors, a committee thereof or the stockholders.
Common or interested directors may be counted in determining the presence of a
quorum at a meeting of the stockholders or the board of directors or of a
committee which authorizes the contract or transaction.

                                   ARTICLE IX

                         INDEMNIFICATION AND INSURANCE

            SECTION 1. Indemnification by Corporation.

                  (a)   Any person who was or is a party or is threatened to be
      made a party to any threatened, pending or completed action, suit or
      proceeding, whether civil, criminal, administrative or investigative
      (other than action by or in the right of the Corporation) by reason of
      the fact that he is or was a director, officer, employee or agent of the
      Corporation or is or was serving at the request of the Corporation as a
      director, officer, employee or agent of another corporation, partnership,
      joint venture, trust or other enterprise, shall be indemnified by the
      Corporation, unless similar indemnification is provided by such other
      corporation or organization which may be involved (any funds received by
      any person as a result of the provisions of this Article shall be deemed
      an advance against his receipt of any such other indemnification from any
      such other corporation or organization), against expenses (including
      attorneys' fees), judgments, fines and amounts paid in settlement
      actually and reasonably incurred by such person in connection with such
      action, suit or proceeding if he acted in good faith and in a manner he
      reasonably believed to be in or not opposed to the best interests of the
      Corporation and, with respect to any criminal action or proceeding, had
      no reasonable cause to believe his conduct was unlawful.  Any such person
      who could be indemnified pursuant to the preceding sentence except for
      the fact that the subject action or suit is or was by or in the right of
      the Corporation shall be indemnified by the Corporation against expenses
      (including attorneys' fees) actually and reasonably incurred by him, in
      connection with the defense or settlement of such





                                      -6-
<PAGE>   13
      action or suit except that no indemnification shall be made in respect of
      any claim, issue or matter as to which such person shall have been
      adjudged to be liable for negligence or misconduct in the performance of
      his duties to the Corporation unless and only to the extent that the
      Court of Chancery of the State of Delaware or the court in which such
      action or suit was brought shall determine upon application that, despite
      the adjudication of liability but in view of all the circumstances of the
      case, such person is fairly and reasonably entitled to indemnity for such
      expenses which the Court of Chancery or such other court shall deem
      proper;

                  (b)   To the extent that a director, officer, employee or
      agent of the Corporation has been successful on the merits or otherwise
      in defense of any action, suit or proceeding referred to in paragraph (a)
      of this Section 1 or in defense of any claim, issue or matter therein, he
      shall be indemnified by the Corporation against expenses (including
      attorneys' fees) actually and reasonably incurred by him in connection
      therewith without the necessity of any action being taken by the
      Corporation other than the determination, in good faith, that such
      defense has been successful.  In all other cases wherein indemnification
      is provided by this Article, unless ordered by a court, indemnification
      shall be made by the Corporation only as authorized in the specific case
      upon a determination that indemnification of the director, officer,
      employee or agent is proper in the circumstances because he has met the
      applicable standard of conduct specified in this Article.  Such
      determination shall be made: (1) By the board of directors by a majority
      vote of a quorum consisting of directors who were not parties to such
      action, suit or proceeding; or (2) if such a quorum is not obtainable or,
      even if obtainable, a quorum of disinterested directors so directs, by
      independent legal counsel in a written opinion; or (3) by the holders of
      a majority of the Capital Stock outstanding;

                  (c)   The termination of any action, suit or proceeding by
      judgment, order, settlement, conviction or upon a plea of nolo contendere
      or its equivalent shall not create, of itself, a presumption that the
      person seeking indemnification did not act in good faith and in a manner
      which he reasonably believed to be in or not opposed to the best
      interests of the Corporation and, with respect to any criminal action or
      proceeding, had reasonable cause to believe that his conduct was
      unlawful.  Entry of a judgment by consent as part of a settlement shall
      not be deemed final adjudication of liability for negligence or
      misconduct in the performance of duty or of any other issue or matter;

                  (d)   Expenses incurred in defending a civil or criminal
      action, suit or proceeding may be paid by the Corporation in advance of
      the final disposition of such action, suit or proceeding as authorized by
      the board of directors in the specific case upon receipt of an
      undertaking by the director, officer, employee or agent involved to repay
      such amount unless it ultimately shall be determined that he is entitled
      to be indemnified by the Corporation; and





                                      -7-
<PAGE>   14
                  (e)   The indemnification provided in this Article shall not
      be deemed exclusive of any other rights to which those seeking
      indemnification may be entitled under any by-law, agreement, vote of
      stockholders or disinterested directors or otherwise, both as to action
      in an official capacity and as to action in another capacity while
      holding such office, and shall continue as to a person who has ceased to
      be a director, officer, employee or agent and shall inure to the benefit
      of the heirs, executors and administrators of such person.

            SECTION 2. Insurance.  By action of the board of directors,
notwithstanding any interest of the directors in the action, the Corporation
may purchase and maintain insurance, in such amounts as the board of directors
deems appropriate, on behalf of any person who is or was a director, officer,
employee or agent of the Corporation or is or was serving at the request of the
Corporation as a director, officer, employee or agent of another corporation,
partnership, joint venture, trust or other enterprise against any liability
asserted against him and incurred by him in any such capacity or arising out of
his status as such, whether or not the Corporation shall have the power to
indemnify him against such liability under the provisions of this Article.

                                   ARTICLE X

                 COMPROMISE OR ARRANGEMENT BETWEEN CORPORATION
                       AND ITS CREDITORS OR STOCKHOLDERS

            Whenever a compromise or arrangement is proposed between this
Corporation and its creditors or any class of them and/or between this
Corporation and its stockholders or any class of them, any court of equitable
jurisdiction within the State of Delaware may, on the application in a summary
way of this Corporation or of any creditor or stockholder thereof or on the
application of any receiver or receivers appointed for this Corporation under
the provisions of Section 291 of Title 8 of the Delaware Code or on the
application of trustees in dissolution or of any receiver or receivers
appointed for this Corporation under the provisions of Section 279 of Title 8
of the Delaware Code order a meeting of the creditors or class of creditors,
and/or of the stockholders or class of stockholders of this Corporation, as the
case may be, to be summoned in such manner as the said court directs.  If a
majority in number representing three-fourths in value of the creditors or
class of creditors, and/or of the stockholders or class of stockholders of this
Corporation, as the case may be, agree to any compromise or arrangement and to
any reorganization of this Corporation as a consequence of such compromise or
arrangement, the said compromise or arrangement and the said reorganization
shall, if sanctioned by the court to which the said application has been made,
be binding on all the creditors or class of creditors, and/or on all the
stockholders or class of stockholders, of this Corporation, as the case may be,
and also on this Corporation.





                                      -8-
<PAGE>   15
                                   ARTICLE XI

                   RESERVATION OF RIGHT TO AMEND CERTIFICATE
                                OF INCORPORATION

            The Corporation reserves the right to amend, alter, change or
repeal any provisions contained in this certificate of incorporation in the
manner now or hereafter prescribed by law and by this certificate of
incorporation.  All the provisions of this certificate of incorporation and all
rights and powers conferred in this certificate of incorporation on
stockholders, directors and officers are subject to such reserved power.

            FOURTH:     That such amendment has been duly adopted in accordance
with the provision of Section 241 of the General Corporation Law of the State
of Delaware.

            IN WITNESS WHEREOF, I have signed this certificate this 15th day of
April, 1983.


                                                /s/ Steven Gelles
                                                --------------------------
                                                STEVEN GELLES





                                      -9-
<PAGE>   16
                                  CERTIFICATE

                                       OF

                                 INCORPORATION

                                       OF

                             ONCOGENE SCIENCE, INC.


FIRST:      The name of this Corporation is ONCOGENE SCIENCE, INC.

SECOND:     Its Registered Office in the State of Delaware is to be located at
            600 Bay Road, in the City of Dover, Zip Code 19901.  The Registered
            Agent in charge thereof is Ms. Pam Goldsborough.

THIRD:      The purpose of the Corporation is to perform research and to
            develop, manufacture, produce, purchase or otherwise acquire, and
            to sell, license, lease or otherwise dispose of materials,
            supplies, substances, chemicals or equipment used or useful in the
            field of Biotechnology or in any other field in which such
            materials, supplies, substances, chemicals or equipment may be
            profitably used and to engage in any lawful act or activity for
            which corporations may be organized under the General Corporation
            Law of Delaware.

FOURTH:     The amount of the total authorized capital stock of this
            Corporation is One Hundred Thousand Dollars ($100,000) divided into
            Ten Million (10,000,000) shares, of One Cent ($.01) each.

FIFTH:      The name and mailing address of the incorporator are as follows:

            Name:             Steven Gelles
            Mailing Address:  122 East 42nd Street, Suite 606
            Zip Code:         New York, New York 10168

I, THE UNDERSIGNED, for the purpose of forming a Corporation under the laws of
the State of Delaware, do make, file and record this Certificate, and do
certify that the facts herein stated are true, and I have accordingly hereto
set my hand this Tenth day of March, 1983.


                                          /s/ Steven Gelles
- ----------------------------              ------------------------------

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

<PAGE>   1
                                                                     EXHIBIT 3.2

                             ONCOGENE SCIENCE, INC.

                             A Delaware corporation

                                    BY-LAWS                  
                           ------------------------
                                   ARTICLE I

                                  STOCKHOLDERS

            Section 1.1 Annual Meeting

            An annual meeting of stockholders for the purpose of electing
directors and of transacting such other business as may come before it shall be
held each year at such date, time, and place, either within or without the
State of Delaware, as may be specified by the Board of Directors.

            Section 1.2 Special Meetings

            Special meetings of stockholders for any purpose or purposes may be
held at any time upon call of the Chairman or the Board, if any, the President
or a majority of the Board of Directors, at such time and place either within
or without the State of Delaware as may be stated in the notice.  A special
meeting of stockholders shall be called by the President upon the written
request, stating time, place, and the purpose or purposes of the meeting, of
stockholders who together own of record a majority of the outstanding stock of
all classes entitled to vote at such meeting.

            Section 1.3 Notice of Meetings

            Written notice of stockholders meetings, stating the place, date,
and hour thereof, and, in the case of a special meeting, the purpose or
purposes for which the meeting is called, shall be given by the Chairman of the
Board, if any, the President, any Vice
<PAGE>   2
President, the Secretary, or an Assistant Secretary, to each stockholder
entitled to vote thereat at least ten days but not more than sixty days before
the date of the meeting, unless a different period is prescribed by law.

            Section 1.4 Quorum

            Except as otherwise provided by law or in the Certificate of
Incorporation or these By-Laws, at any meeting of stockholders, the holders of
a majority of the outstanding shares of each class of stock entitled to vote at
the meeting shall be present or represented by proxy in order to constitute a
quorum for the transaction of any business.  In the absence of a quorum, a
majority in interest of the stockholders present or the chairman of the meeting
may adjourn the meeting from time to time in the manner provided in Section 1.5
of these By-Laws until a quorum shall attend.

            Section 1.5 Adjournment

            Any meeting of stockholders, annual or special, may adjourn from
time to time to reconvene at the same or some other place, and notice need not
be given of any such adjourned meeting if the time and place thereof are
announced at the meeting at which the adjournment is taken.  At the adjourned
meeting, the Corporation may transact any business which might have been
transacted at the original meeting.  If the adjournment is for more than thirty
days, or if after the adjournment a new record date is fixed for the adjourned
meeting, a notice of the adjourned meeting shall be given to each stockholder
of record entitled to vote at the meeting.

            Section 1.6 Organization

            The Chairman of the Board, if any, or in his absence the President,
or in their



                                      2
<PAGE>   3
absence any Vice President, shall call to order meetings of stockholders and
shall act as chairman of such meetings.  The Board of Directors or, if the
Board fails to act, the stockholders may appoint any stockholder, director, or
officer of the Corporation to act as chairman of any meeting in the absence of
the Chairman of the Board, the President, and all Vice Presidents.

            The Secretary of the Corporation shall act as secretary of all
meetings of stockholders, but, in the absence of the Secretary, the chairman of
the meeting may appoint any other person to act as secretary of the meeting.

            Section 1.7 Voting

            Except as otherwise provided by law or in the Certificate of
Incorporation or these By-Laws and except for the election of directors, at any
meeting duly called and held at which a quorum is present, a majority of the
votes cast at such meeting upon a given question by the holders of outstanding
shares of stock of all classes of stock of the Corporation entitled to vote
thereon who are present in person or by proxy shall decide such question.  At
any meeting duly called and held for the election of directors at which a
quorum is present, directors shall be elected by a plurality of the votes cast
by the holders (acting as such) of shares of stock of the Corporation entitled
to elect such directors.

                                   ARTICLE II

                               BOARD OF DIRECTORS

            Section 2.1       Number and Term of Office

            The business, property, and affairs of the Corporation shall be
managed by or under the direction of a Board of seven directors provided,
however, that the Board, by





                                       3
<PAGE>   4
resolution adopted by vote of a majority of the then authorized number of
directors, may increase or decrease the number of directors.  The directors
shall be elected at the annual meeting of stockholders, and each shall serve
(subject to the provisions of Article IV) until the next succeeding annual
meeting of the stockholders and until his respective successor has been elected
and qualified.

            Section 2.2       Chairman of the Board

            The directors may elect one of their members to be Chairman of the
Board of Directors.  The Chairman shall be subject to the control of and may be
removed by the Board of Directors.  He shall perform such duties as may from
time to time be assigned to him by the Board.

            Section 2.3       Meetings

            The annual meeting of the Board of Directors, for the election of
officers and the transaction of such other business as may come before the
meeting, shall be held without notice at the same place as, and immediately
following, the annual meeting of the stockholders.

            Regular meetings of the Board of Directors may be held without
notice at such time and place as shall from time to time be determined by the
Board.

            Special meetings of the Board of Directors shall be held at such
time and place as shall be designated in the notice of the meeting whenever
called by the Chairman of the Board, if any, the President, or by a majority of
the directors then in office.

            Section 2.4       Notice of Special Meetings

            The secretary, or in his absence any other officer of the
Corporation, shall





                                       4
<PAGE>   5
give each director notice of the time and place of holding of special meetings
of the Board of Directors by mail at least three days before the meeting, or by
telegram, cable, radiogram, or personal service at least one day before the
meeting.  Unless otherwise stated in the notice thereof, any and all business
may be transacted at any meeting without specification of such business in the
notice.

            Section 2.5       Quorum and Organization of Meetings

            A majority of the total number of members of the Board of Directors
as constituted from time to time shall constitute a quorum for the transaction
of business, but, if at any meeting of the Board of Directors (whether or not
adjourned from a previous meeting) there shall be less than a quorum present, a
majority of those present may adjourn the meeting to another time and place,
and the meeting may be held as adjourned without further notice or waiver.
Except as otherwise provided by law or in the Certificate of Incorporation or
these By-Laws, a majority of the entire Board of Directors may decide any
question brought before such meetings.  Meetings shall be presided over by the
Chairman of the Board, if any, or in his absence by the President, or in the
absence of both such other person as the directors may select.  The Secretary
of the Corporation shall act as secretary of the meeting, but in his absence
the chairman of the meeting may appoint any person to act as secretary of the
meeting.

            Section 2.6       Committees

            The Board of Directors may, by resolution passed by a majority of
the whole Board, designate one or more committees, each committee to consist of
one or more of the directors of the Corporation.  The Board may designate one
or more directors as alternate





                                       5
<PAGE>   6
members of any committee, who may replace any absent or disqualified member at
any meeting of the committee.  In the absence or disqualification of a member
of a committee, the member or members thereof present at any meeting and not
disqualified from voting, whether or not he or they constitute a quorum, may
unanimously appoint another member of the Board of Directors to act at the
meeting in place of any such absent or disqualified member.  Any such
committee, to the extent provided in the resolution of the Board of Directors,
shall have and may exercise all powers and authority of the Board of Directors
in the management of the business, property, and affairs of the Corporation,
and may authorize the seal of the Corporation to be affixed to all papers which
may require it; but no such committee shall have power or authority in
reference to amending the Certificate of Incorporation of the Corporation,
adopting an agreement of merger or consolidation, recommending to the
stockholders the sale, lease, or exchange of all or substantially all of the
Corporation's property and assets, recommending to the stockholders a
dissolution of the Corporation or a revocation of dissolution, or amending
these By-Laws; and, unless the resolution expressly so provided, no such
committee shall have power or authority to declare a dividend or to authorize
the issuance of stock.  Each committee which may be established by the Board of
Directors or these By-Laws may fix its own rules and procedures.  Notice of
meetings of committees, other than of regular meetings provided for by the
rules, shall be given to committee members.  All action taken by the committees
shall be recorded in minutes of the meetings.

            Section 2.7       Action Without Meeting

            Nothing contained in these By-Laws shall be deemed to restrict the
power of





                                       6
<PAGE>   7
the directors or members of any committee to take any action, required or
permitted to be taken by them, without meeting.

            Section 2.8       Telephone Meetings

            Nothing contained in these By-Laws shall be deemed to restrict the
power of members of the Board of Directors, or any committee designated by the
Board, to participate in a meeting of the Board, or committee, by means of
conference telephone or similar communications equipment by means of which all
persons participating in the meeting can hear each other.

                                  ARTICLE III

                                    OFFICERS

            Section 3.1       Executive Officers

            The executive officers of the Corporation shall be a President, a
Scientific Director, one or more Vice Presidents, a Treasurer, and a Secretary,
each of whom shall be elected by the Board of Directors.  The Board of
Directors may elect or appoint such other officers (including a Chairman of the
Board, Chief Financial Officer, a Controller and one or more Assistant
Treasurers and Assistant Secretaries) as it may deem necessary or desirable.
Each officer shall hold office for such term as may be prescribed by the Board
of Directors from time to time.  Any person may hold at one time two or more
offices.

            Section 3.2       Powers and Duties

            The Chairman of the Board, if any, or, in his absence, the
President, shall preside at all meetings of the stockholders and of the Board
of Directors.  The President shall be the chief executive officer of the
Corporation.  In the absence of the President, a Vice





                                       7
<PAGE>   8
President appointed by the President or, if the President fails to make such
appointment, by the Board, shall perform all the duties of the President.  The
officers and agents of the Corporation shall each have such powers and
authority and shall perform such duties in the management of the business,
property, and affairs of the Corporation as generally pertain to their
respective offices, as well as such powers and authorities and such duties as
from time to time may be prescribed by the Board of Directors.

                                   ARTICLE IV

                      RESIGNATIONS, REMOVALS AND VACANCIES

            Section 4.1       Resignations

            Any director or officer of the Corporation, or any member of any
committee, may resign at any time by giving written notice to the Board of
Directors, the President, or the Secretary of the Corporation.  Any such
resignation shall take effect at the time specified therein or, if the time be
not specified therein, then upon receipt thereof.  The acceptance of such
resignation shall not be necessary to make it effective.

            Section 4.2       Removals

            The Board of Directors, by a vote of not less than a majority of
the entire Board, at any meeting thereof, or by written consent, at any time,
may, to the extent permitted by law, remove with or without cause from office
or terminate the employment of any officer or member of any committee and may,
with or without cause, disband any committee.





                                       8
<PAGE>   9
            Any director or the entire Board of Directors may be removed, with
or without cause, by the holders of a majority of the shares entitled at the
time to vote at an election of directors.

            Section 4.3       Vacancies

            Any vacancy in the office of any director or officer through death,
resignation, removal, disqualification, or other cause, and any additional
directorship resulting from increase in the number of directors, may be filled
at any time by a majority of the directors then in office (even though less
than a quorum remains) or, in the case of any vacancy in the office of any
director, by the stockholders, and, subject to the provisions of this Article
IV, the person so chosen shall hold office until his successor shall have been
elected and qualified; or, if the person so chosen is a director elected to
fill a vacancy, he shall (subject to the provisions of this Article IV) hold
office for the unexpired term of his predecessor.

                                   ARTICLE V

                                 CAPITAL STOCK

            Section 5.1       Stock Certificates

            The certificates for share of the capital stock of the Corporation
shall be in such form as shall be prescribed by law and approved, from time to
time, by the Board of Directors.

            Section 5.2       Transfer of Shares

            Shares of the capital stock of the Corporation may be transferred
on the books of the Corporation only by the holder of such shares or by his
duly authorized attorney, upon





                                       9
<PAGE>   10
the surrender to the Corporation or its transfer agent of the certificate
representing such stock properly endorsed.

            Section 5.3       Fixing Record Date

            In order that the Corporation may determine the stockholders
entitled to notice of or to vote at any meeting of stockholders or any
adjournment thereof or to express consent to corporate action in writing
without a meeting, or entitled to receive payment of any dividend or other
distribution or allotment of any rights, or entitled to exercise any rights in
respect of any change, conversion, or exchange of stock, or for the purpose of
any other lawful action, the Board of Directors may fix, in advance, a record
date, which, unless otherwise provided by law, shall not be more than sixty nor
less than ten days before the date of such meeting, nor more than sixty days
prior to any other action.

            Section 5.4       Lost Certificates

            The Board of Directors or any transfer agent of the Corporation may
direct a new share certificate or certificates to be issued in place of any
certificate or certificates theretofore issued by the Corporation, alleged to
have been lost, stolen, or destroyed, upon the making of an affidavit of that
fact by the person claiming the certificate to be lost, stolen, or destroyed.
When authorizing such issue of a new certificate or certificates, the Board of
Directors may, in its discretion and as a condition precedent to the issuance
thereof, require the owner of such lost, stolen, or destroyed certificate or
certificates, or his legal representative, to give the Corporation bond in such
sum as the Board of Directors shall direct to indemnify the Corporation against
any claim that may be made against the Corporation with respect to the
certificate alleged to have been lost, stolen, or destroyed or





                                       10
<PAGE>   11
the issuance of such new certificates, and such requirement may be general or
confined to specific instances.

            Section 5.5       Regulations

            The Board of Directors shall have power and authority to make all
such rules and regulations as it may deem expedient concerning the issue,
transfer, registration, cancellation, and replacement of certificates
representing stock of the Corporation.

                                   ARTICLE VI

                                 MISCELLANEOUS

            Section 6.1       Corporate Seal

            The corporate seal shall have inscribed thereon the name of the
Corporation, the year of its organization, and the words "Corporate Seal" and
"Delaware", and shall be in such form as may be approved from time to time by
the Board of Directors.

            Section 6.2       Fiscal Year

            The fiscal year of the Corporation shall be determined by
resolution of the Board of Directors.

            Section 6.3       Notices and Waivers Thereof

            Whenever any notice is required by law, the Certificate of
Incorporation, or these By-Laws to by given to any stockholder, director, or
officer, such notice, except as otherwise provided by law, may be given
personally, or by mail, or in the case of directors or officers, by telegram,
cable, or radiogram, addressed to such address as appears on the books or the
Corporation.  Any notice given by telegram, cable, or radiogram shall be deemed
to have been given when it shall have been delivered for transmission and any
notice





                                       11
<PAGE>   12
given by mail shall be deemed to have been given when it shall have been
deposited in the United States mail with postage thereon prepaid.

            Whenever any notice is required to be given by law, the Certificate
of Incorporation, or these By-Laws, a written waiver thereof, signed by the
person entitled to such notice, whether before or after the meeting or the time
stated therein, shall be deemed equivalent in all respects to such notice to
the full extent permitted by law.

            Section 6.4       Stock of Other Corporations Other Interests

            Unless otherwise ordered by the Board of Directors, the President,
the Secretary, and such attorneys or agents of the Corporation as may be from
time to time authorized by the Board of Directors or the President, shall have
full power and authority on behalf of this Corporation to attend and to act and
vote in person or by proxy at any meeting of the holders of securities of any
corporation or other entity in which this Corporation may own or hold shares or
other securities, and at such meetings shall possess and may exercise all the
rights and powers incident to the ownership of such shares or other securities
which this Corporation, as the owner or holder thereof, might have possessed
and exercised if present.  The President, the Secretary or such attorneys or
agents, may also execute and deliver on behalf of the Corporation powers of
attorney, proxies, consents, waivers and other instruments relating to the
shares or securities owned or held by this Corporation.

                                  ARTICLE VII

                                   AMENDMENTS

            The holders of shares entitled at the time to vote for the election
of directors shall have power to adopt, amend, or repeal the By-Laws of the
Corporation by vote of not





                                       12
<PAGE>   13
less than a majority of such shares, and except as otherwise provided by law,
the Board of Directors shall have power equal in all respects to that of the
stockholders to adopt, amend, or repeal the By-Laws by vote of not less than a
majority of the entire Board.  However, any By-Law adopted by the board may be
amended or repealed by vote of the holders of a majority of the shares entitled
at the time to vote for the election or directors.





                                       13

<PAGE>   1
                                                                   EXHIBIT 10.19


                            OSI ROYALTY FREE LICENSE


      This AGREEMENT is entered into as of April 1, 1986 by and between PFIZER
INC.  ("PFIZER"), a Delaware corporation having an office at 235 East 42nd
Street, New York, New York 10017, and ONCOGENE SCIENCE, INC. ("OSI"), a
Delaware corporation having an office at 222 Station Plaza North, Suite 330,
Mineola, New York, 11501.

      The parties agree as follows:

      1.    DEFINITIONS

            The capitalized terms used herein have the meanings specified in
Exhibits I, II, III and IV of the Collaborative Research Agreement dated as of
April 1, 1986 between PFIZER and OSI.

      2.    GRANT

            2.1.  PFIZER grants to OSI an exclusive, irrevocable, worldwide,
royalty-free, perpetual right and license, including the right to grant
sublicenses, under Joint Patent Rights and Joint Technology to make, have made,
use and sell products in the following fields of use:

            (a)   in vitro and in vivo diagnostics, including in vivo imaging;
and

            (b)   Monoclonal Antibody Technology; and

            (c)   products sold exclusively for research use.
<PAGE>   2
            2.2.  PFIZER grants to OSI a nonexclusive, irrevocable, worldwide,
royalty-free, perpetual right and license, including the right to grant
sublicenses, under Joint Patent Rights and Joint Technology to make, have made,
use and sell products in all fields of use other than those listed in Section
2.1.

      3.    INFRINGEMENT

            3.1.  OSI shall have the right, at its expense, to institute
actions under Joint Patent Rights and Joint Technology for infringement or
misappropriation in the fields of use in which PFIZER has granted rights to
OSI.

      4.    MISCELLANEOUS

            4.1.  This Agreement is made and delivered in New York and shall be
governed by, and construed in accordance with, the laws of the State of New
York applicable to agreements made and to be performed entirely within the
State of New York.





                                      -2-
<PAGE>   3
            4.2.  This Agreement shall be binding upon and inure to the benefit
of the parties hereto and their respective legal representatives, successors
and assigns.

                                    ONCOGENE SCIENCE, INC.


                                    By: /s/ John R. Stephens
                                       ---------------------------------------

                                    Title:  Scientific Director



                                    PFIZER INC.


                                    By: /s/ Barry M. Bloom
                                       ---------------------------------------

                                    Title:  Vice President





                                      -3-

<PAGE>   1
                                                                   EXHIBIT 10.20


                          PFIZER ROYALTY FREE LICENSE


      This AGREEMENT is entered into as of April 1, 1986 by and between PFIZER
INC.  ("PFIZER"), a Delaware corporation having an office at 235 East 42nd
Street, New York, New York 10017, and ONCOGENE SCIENCE, INC. ("OSI"), a
Delaware corporation having an office at 222 Station Plaza North, Suite 330,
Mineola, New York, 11501.

      The parties agree as follows:

      1.    DEFINITIONS

            The capitalized terms used herein have the meanings specified in
Exhibits I, II, III and IV of the Collaborative Research Agreement dated as of
April 1, 1986 between PFIZER and OSI.

      2.    GRANT

            2.1.  OSI grants to PFIZER a nonexclusive, irrevocable, worldwide,
royalty-free, perpetual right and license, including the right to grant
sublicenses, under Joint Patent Rights and Joint Technology to make, have made,
use and sell products in all fields of use except the following:

            (a)   in vitro and in vivo diagnostics, including in vivo imaging;
and

            (b)   Monoclonal Antibody Technology; and

            (c)   products sold exclusively for research use.





<PAGE>   2
      3.    INFRINGEMENT

            3.1.  PFIZER shall have the right, at its expense, to institute
actions under Joint Patent Rights and Joint Technology for infringement or
misappropriation in the fields of use in which OSI has granted rights to
PFIZER.

      4.    MISCELLANEOUS

            4.1.  This Agreement is made and delivered in New York and shall be
governed by, and construed in accordance with, the laws of the State of New
York applicable to agreements made and to be performed entirely within the
State of New York.

            4.2.  This Agreement shall be binding upon and inure to the benefit
of the parties hereto and their respective legal representatives, successors
and assigns.

                                          ONCOGENE SCIENCE, INC.


                                          By: /s/ John R. Stephens
                                             ---------------------------------

                                          Title:  Scientific Director


                                          PFIZER INC.


                                          By: /s/ Barry M. Bloom
                                             ---------------------------------

                                          Title:  Vice President





                                     -2-

<PAGE>   1
                                                                   EXHIBIT 10.21

                               ROYALTY AGREEMENT


      This ROYALTY AGREEMENT is entered into as of April 1, 1986 by and between
PFIZER INC.  ("PFIZER"), a Delaware corporation having an office at 235 East
42nd Street, New York, New York 10017, and ONCOGENE SCIENCE, INC. ("OSI"), a
Delaware corporation having an office at 222 Station Plaza North, Suite 330,
Mineola, New York, 11501.

      WHEREAS, PFIZER and OSI have entered into a Collaborative Research
Agreement dated April 1, 1986, pursuant to which, among other things, PFIZER
has committed to fund certain cancer therapeutant research projects of OSI,

      WHEREAS, certain results and materials arising from that Collaborative
Research Agreement will be useful and will be used by PFIZER in its own
research directed to the discovery of novel agents for the therapy of cancer,
and

      WHEREAS, PFIZER recognizes the contribution of OSI in assisting PFIZER in
this process,

      ACCORDINGLY, in consideration of the foregoing and of the mutual
covenants and promises hereinafter contained, the parties hereto agree as
follows:

1.    DEFINITIONS.

      Whenever used in this Royalty Agreement, the capitalized terms defined in
Exhibits A, B, C and D shall have the meanings specified therein.
<PAGE>   2
2.    ROYALTIES.

      PFIZER shall pay to OSI a royalty of between one percent (1%) and six
percent (6%) of the Net Sales of each Cancer Therapeutant Product sold by
PFIZER; provided, that such Cancer Therapeutant Product is in existence, as
evidenced by the filing with the U.S. Food and Drug Administration of an
Investigational New Drug Application (or the filing of a foreign equivalent)
for such Cancer Therapeutant Product, during or within five years after the
termination or expiration of, the Collaborative Research Agreement; and
provided, that such Cancer Therapeutant Product (a) was not developed as a
result of an existing PFIZER internal research project concerning inhibitors of
tissue plasminogen activators; or (b) does not involve Monoclonal Antibody
Technology; or (c) is not an acquired product to which PFIZER has excluded from
the Collaborative Research Agreement pursuant to Section 8.1.2(c) of the
Collaborative Research Agreement; or (d) is not a product resulting from
research which PFIZER has excluded from the Collaborative Research Agreement
pursuant to Section 8.1.2 (c) of the Collaborative Research Agreement.  PFIZER
and OSI shall negotiate in good faith the precise royalty rate to be paid with
respect to each such Cancer Therapeutant Product.  If PFIZER and OSI are unable
to agree, the royalty rate shall be determined by arbitration in accordance
with Paragraph 7.  Royalty rates in excess of one percent shall be based upon
the extent to which OSI contributes to the development of each such Cancer
Therapeutant Product.

      If PFIZER shall owe to OSI a royalty pursuant to this Royalty Agreement
and a royalty pursuant to an Exclusive Cancer Therapeutant License Agreement,
PFIZER shall pay to OSI only the higher such royalty.





                                      -2-
<PAGE>   3
3.    ROYALTY PERIOD.

      Royalties shall be paid for 10 years from the date of first commercial
sale by PFIZER of each such Cancer Therapeutant Product in each country of the
world, on a country by country basis.

4.    PAYMENT OF ROYALTIES, ACCOUNTING FOR ROYALTIES, RECORDS, ETC.

      4.1.  Payment Dates.

            Royalties shall be paid by PFIZER during the royalty period on all
sales of each Cancer Therapeutant Product within 60 days after the end of each
calendar quarter in which such sales are made.  Such payments shall be
accompanied by a statement showing the Net Sales of each Cancer Therapeutant
Product by PFIZER and each Affiliate or sublicensee of PFIZER in each country,
the applicable royalty rate for the Cancer Therapeutant Product, and a
calculation of the amount of royalty due.

      4.2.  Accounting; Blocked Currency; Devaluation.

            The Net Sales used for computing the royalties payable to OSI by
PFIZER pursuant to Paragraph 2 hereof shall be computed in U.S. Dollars; and
all payments of such royalties shall be made in U.S. Dollars.  For the purpose
of determining the amount of royalties due, the amount of Net Sales in any
foreign currency shall be computed by (a) converting such amount into U.S.
Dollars at the prevailing commercial rate of exchange for purchasing U.S.
Dollars with the foreign currency in question as quoted by Citibank in New
York, New York, one business day before the date on which the relevant royalty





                                      -3-
<PAGE>   4
payment is to be made by PFIZER and (b) deducting therefrom the amount of any
tax, duty, charge, commission, discount or other fee payable in respect of such
conversion into, and remittance of, U.S. Dollars; provided, that in the event
any foreign currency shall, at the time that a royalty payment in respect of
Net Sales in such foreign currency is due, not be convertible into U.S. Dollars
and freely transferable by reason of moratorium, embargo, banking restriction
or other restriction, PFIZER shall, upon notice thereof to OSI, have no
obligation to make payment of such royalties until such time as such foreign
currency shall be convertible into U.S. Dollars and freely transferable to the
United States, except that, in such event, OSI may, by notice to PFIZER,
request that such royalties be paid by PFIZER in such foreign currency
(calculated on the basis of Net Sales in such foreign currency) and deposited
in a local bank account in the relevant country specified by OSI, in the name
of OSI.  During any period of non-payment of royalties hereunder, the royalties
that are due and payable by PFIZER shall accrue in the foreign currency in
which they were earned.  PFIZER shall pay to OSI the amount of any such accrued
royalties within 20 business days after the date on which the relevant foreign
currency shall become convertible into U.S. Dollars and freely transferable to
the United States.  PFIZER shall provide to OSI such documentation with respect
to any of the above situations as OSI shall reasonably request.

      4.3.  Records.

            PFIZER shall keep for three years from the date of payment of
royalties hereunder complete and accurate records of sales by PFIZER of each
Cancer Therapeutant Product, in sufficient detail to allow the royalties
accruing hereunder to be accurately





                                      -4-
<PAGE>   5
determined.  OSI shall have the right for a period of three years after
receiving any report or statement with respect to royalties due and payable
hereunder to appoint an independent certified public accountant reasonably
acceptable to PFIZER to inspect the relevant records of PFIZER to verify such
report or statement.  PFIZER shall make its records available for inspection by
such independent certified public accountant during regular business hours at
such place or places where such records are customarily kept, upon reasonable
notice from OSI, to the extent reasonably necessary to verify the accuracy of
the reports and payments required hereunder.  Such inspection right shall not
be exercised more than once in any calendar year.  OSI agrees to hold strictly
confidential all information concerning royalty payments and reports, other
than the total amounts thereof, and all information learned in the course of
any audit or inspection hereunder, except to the extent that it is necessary
for OSI to reveal such information in order to enforce its rights under this
Royalty Agreement or that disclosure is required by law.  The failure of OSI to
request verification of any report or statement during said three-year period
shall be considered acceptance of the accuracy of such report, and PFIZER shall
have no obligation to maintain any records pertaining to such report or
statement beyond said three-year period.

5.    TERM AND TERMINATION.

      5.1.  Term.

            This Royalty Agreement shall commence as of the Effective Date
hereof and shall continue in effect until the expiration of PFIZER's last
obligation to pay royalties hereunder.





                                      -5-
<PAGE>   6
6.    ARBITRATION.

      In the event PFIZER and OSI cannot agree pursuant to Paragraph 2 on a
royalty rate for any Cancer Therapeutant Product, the royalty rate shall be
determined for such Cancer Therapeutant Product by arbitration to be held in
New York, New York, in accordance with the then prevailing rules for commercial
arbitration of the American Arbitration Association, and the determination
resulting from such arbitration shall be final and binding upon both PFIZER and
OSI.

7.    NOTICES.

      7.1.  Notices.

            All notices, statements, or other documents required to be given
hereunder shall be in writing and shall be given either personally, or by
mailing the same in a sealed envelope, postage prepaid, certified or registered
mail, return receipt requested, or by telegraph, telex or cable confirmed by
letter mailed as provided above, addressed as follows, or to such other address
as may be designated from time to time by notice given in the manner provided
in this Section 7:

            If to PFIZER to:

                        Pfizer Inc.
                        235 East 42nd Street
                        New York, New York 10017
                        Attention:     President, Central Research

                        with copy to:  Office of the General Counsel





                                      -6-
<PAGE>   7
            If to OSI to:

                        Oncogene Science, Inc.
                        222 Station Plaza North
                        Mineola, N.Y. 11501
                        Attention : President

Notices given personally shall be deemed given as of the date delivered.
Notices given by telegraph, telex or cable shall be deemed given as of the date
received; provided, that the letter confirming such notices shall have been
mailed on the same date and shall have been received.  Mailed notices shall be
deemed given as of the date of receipt by the party to whom such notices are
directed.

8.    GOVERNING LAW.

      8.1.  New York State Law.

            This Royalty Agreement is made and delivered in New York and shall
be governed by, and construed in accordance with, the laws of the State of New
York applicable to agreements made and to be performed entirely within the
State of New York.

9.    MISCELLANEOUS.

      9.1.  Binding Effect.

            This Royalty Agreement shall be binding upon and inure to the
benefit of the parties hereto and their respective heirs, legal
representatives, successors and assigns.





                                      -7-
<PAGE>   8
      9.2.  Headings.

            Paragraph headings are inserted herein for convenience of reference
only and do not form a part of this Royalty Agreement, and no construction or
inference shall be derived therefrom.

      9.3.  Counterparts.

            This Royalty Agreement may be executed simultaneously in two or
more counterparts, each of which shall be deemed an original, but all of which
together shall constitute one and the same instrument.

      9.4.  Amendment; Waiver; etc.

            This Royalty Agreement may be amended, modified, superseded or
cancelled, and any of the terms hereof may be waived, only by a written
instrument executed by each party hereto or, in the case of waiver, by the
party or parties waiving compliance.  The delay or failure of any party at any
time or times to require performance of any provision hereof shall in no manner
effect the rights at a later time to enforce the same or any other provision.
No waiver by any party of any condition, or of the breach of any term,
contained in this Royalty Agreement, whether by conduct or otherwise, in any
one or more instances, shall be deemed to be, or construed as, a further or
continuing waiver of any such condition or of the breach of such term or any
other term of this Royalty Agreement.





                                      -8-
<PAGE>   9
      9.5.  No Third Party Beneficiaries.

            No person not a party to this Royalty Agreement, including any
employee of any party to this Royalty Agreement, shall have or acquire any
rights by reason of this Royalty Agreement, nor shall any party hereto have any
obligations or liabilities to such other Person by reason of this Royalty
Agreement.

      9.6.  Assignment and Successors.

            This Royalty Agreement may not be assigned by either party hereto
except that either party may assign this Royalty Agreement to any of its
Affiliates, to any purchaser of all or substantially all of its assets or to
any successor corporation resulting from any merger or consolidation with or
into such corporation.  In the event of any such assignment by PFIZER, its
successor shall expressly assume in writing the performance of all the terms
and conditions of this Royalty Agreement to be performed by PFIZER.





                                      -9-
<PAGE>   10
      IN WITNESS WHEREOF, the parties hereto have caused this Royalty Agreement
to be executed by their duly authorized representatives as of the date first
written above.

                                          PFIZER INC.



                                          By:/s/ Barry M. Bloom
                                             -----------------------------

                                          Title:  Vice President



                                          ONCOGENE SCIENCE, INC.



                                          By:/s/ John R. Stephens
                                             -----------------------------

                                          Title:  Scientific Director





                                      -10-
<PAGE>   11
                                   EXHIBIT A


                                  DEFINITIONS


      1.    "Affiliate" means any corporation or other legal entity owning,
directly or indirectly, fifty percent or more of the voting capital shares or
similar voting rights of PFIZER or OSI; any corporation or other legal entity
fifty percent or more of the voting capital shares or similar voting rights of
which is owned, directly or indirectly, by PFIZER or OSI; or any corporation or
other legal entity fifty percent or more of the voting capital shares or
similar voting rights of which is owned, directly or indirectly, by a
corporation or other legal entity which owns, directly or indirectly, fifty
percent or more of the voting capital shares or similar voting rights of PFIZER
or OSI.

      2.    "Cancer Therapeutant Product" means any product that is useful in
the therapy of human cancer.

      3.    "Collaborative Research Agreement" means the Collaborative Research
Agreement dated April 1, 1986 between PFIZER and OSI.

      4.    "Dollars" mean lawful currency of the United States of America.

      5.    "Effective Date" means April 1, 1986.

      6.    "Net Sales" means the gross amount invoiced by PFIZER or any
Affiliate or sublicensee of PFIZER (PFIZER, Affiliates of PFIZER and
sublicensees of PFIZER are sometimes referred to collectively in this Royalty
Agreement as "PFIZER") for arm's-length sales to a third party or parties of
Cancer Therapeutant Products, after deducting, if not already deducted in the
actual amount invoiced the following: normal and customary trade discounts
actually allowed; returns; credits; taxes the legal incidence of which is on
the purchaser and separately shown on PFIZER's invoices; and transportation,
insurance and postage charges, if prepaid by PFIZER and billed on PFIZER's
invoices as a separate item.

      7.    "Patent Rights"

            (a)   The term "OSI Patent Rights" means and includes:

                  (i)   all patentable inventions pertaining to OSI Technology
                        (a) which were in existence on the Effective Date of
                        this Agreement or which were made at any time during
                        the term of the Collaborative Research Agreement by any
                        employee of, or consultant to, OSI, or both; and (b)
                        which are legally or beneficially owned, or both, by
                        OSI; and





                                      -11-
<PAGE>   12
                  (ii)  all applications for letters patent, whether domestic
                        or foreign, claiming such patentable inventions,
                        including all continuations, continuations-in-part,
                        divisions, renewals and patent of addition thereof, all
                        letters patent granted thereon, and all reissues and
                        extensions thereof.

            (b)   The term "PFIZER Patent Rights" means and includes:

                  (i)   all patentable inventions pertaining to PFIZER
                        Technology (a) which were in existence on the Effective
                        Date of this Agreement or which were made at any time
                        during the term of the Collaborative Research Agreement
                        by any employee of, or consultant to, PFIZER, or both;
                        and (b) which are legally or beneficially owned, or
                        both, by PFIZER; and

                  (ii)  all applications for letters patent, whether domestic
                        or foreign, claiming such patentable inventions
                        including all continuations, continuations-in-part,
                        divisions, renewals and patents of addition thereof,
                        all letters patent granted thereon, and all reissues
                        and extensions thereof.

            (c)   The term "Joint Patent Rights" means and includes:

                  (i)   all patentable inventions pertaining to Joint
                        Technology (a) which were in existence on the Effective
                        Date of this Agreement or which were made at any time
                        during the term of the Collaborative Research Agreement
                        jointly by employees of, or consultants to, OSI and
                        PFIZER; and (b) which are legally or beneficially owned
                        by OSI and PFIZER, each of OSI and PFIZER having made
                        an inventive contribution to such invention and owning
                        an undivided interest therein as determined by the laws
                        of inventorship; and

                  (ii)  all applications for letters patent, whether domestic
                        or foreign, claiming such patentable inventions
                        including all continuations, continuations-in-part,
                        divisions, renewals and patents of addition thereof,
                        all letters patent granted thereon, and all reissues
                        and extensions thereof.

      8.    "Technology".  The terms "OSI Technology", "PFIZER Technology" and
"Joint Technology" have the meanings defined in Exhibits A, B, C and D,
respectively; or such amended meanings as shall be agreed upon by the parties
pursuant to the Collaborative Research Agreement.





                                      -12-
<PAGE>   13
                                   EXHIBIT B

                                 OSI TECHNOLOGY

      The term "OSI Technology" means and includes all technology and technical
information, including all inventions, cultures, strains, vectors, genes, gene
fragments and their sequences, cell lines, hybridoma cell lines, monoclonal and
polyclonal antibodies, proteins and protein fragments and their sequences,
non-protein chemical structures and methods for synthesis, structure-activity
relationships, assay methodology, methods, processes, formulae, plans,
specifications, characteristics, equipment and equipment designs, know-how,
experience and trade secrets:

      (a)   which have been developed by employees of, or consultants to, OSI
            prior to, or during the term of, the Collaborative Research
            Agreement; and

      (b)   which pertain to:

            (i)   any of a family of genes designed oncogenes, including those
                  of viral, normal or tumor cell origin and all mutants whether
                  obtained from natural sources or artificial constructions,
                  and the proteins, syntheses of which are directed by the
                  oncogenes, whether obtained from virus, normal or tumor
                  cells, or by molecular cloning and expression of such genes
                  in a prokaryotic or eukaryotic cell system, and to the
                  regulation of these oncogenes and their products, or both, as
                  expressed in the transformed phenotype ("Oncogene
                  Technology"), including, but not limited to, the oncogenes
                  designated ras oncogenes ("ras Technology"); or

            (ii)  any of a family of polypeptides capable of regulating tumor
                  growth, their sources, methods of isolation and purification,
                  biochemical or biophysical structures, or both, biological
                  activities, the biochemical structures of the genes or DNA
                  sequences coding for the polypeptides, methods for cloning
                  and expressing the polypeptides in prokaryotic and eukaryotic
                  cell systems, and methods for purifying the polypeptides so
                  expressed ("Tumor Growth Regulating Protein Technology"),
                  including but not limited to, the proteins designated Tumor
                  Inhibitory Factors ("TIFs") and Tumor Growth Inhibitors
                  ("TGIs") (collectively, "TIF and TGI Technology") ; or

            (iii) both (i) and (ii).





                                      -13-
<PAGE>   14
                                   EXHIBIT C

                               PFIZER TECHNOLOGY


      The term "PFIZER Technology" means and includes all technology and
technical information, including all inventions, cultures, strains, vectors,
genes, gene fragments and their sequences, cell lines, hybridoma cell lines,
monoclonal and polyclonal antibodies, proteins and protein fragments and their
sequences, non-protein chemical structures and methods for synthesis,
structure-activity relationships, assay methodology, methods, processes,
formulae, plans, specifications, characteristics, equipment and equipment
designs, know-how, experience and trade secrets:

      (a)   which have been developed by employees of, or consultants to,
            PFIZER prior to, or during the term of, the Collaborative Research
            Agreement; and

      (b)   which pertain to:

            (i)   Oncogene Technology, including, but not limited to, ras
                  Technology, both terms being as defined in Exhibit B; or

            (ii)  Tumor Growth Regulating Protein Technology, including, but
                  not limited to, TIF and TGI Technology, both terms being as
                  defined in Exhibit B; or

            (iii) both (i) and (ii).





                                      -14-
<PAGE>   15
                                   EXHIBIT D


                                JOINT TECHNOLOGY


      The term "Joint Technology" means and includes all technology and
technical information, including all inventions, cultures, strains, vectors,
genes, gene fragments and their sequences, cell lines, hybridoma cell lines,
monoclonal and polyclonal antibodies, proteins and protein fragments and their
sequences, non-protein chemical structures and methods for synthesis,
structure-activity relationships, assay methodology, methods, processes,
formulae, plans, specifications, characteristics, equipment and equipment
designs, know-how, experience and trade secrets:

      (a)   which have been developed jointly by employees of, or consultants
            to, PFIZER and OSI during the term of the Interim Research
            Agreement dated November 7, 1985 between PFIZER and OSI or of the
            Collaborative Research Agreement, such that each of PFIZER and OSI
            having contributed to the development of such technology and
            technical information owns an undivided interest therein; and

      (b)   which pertain to:

            (i)   Oncogene Technology, including but not limited to, ras
                  Technology, both terms being as defined in Exhibit B; or

            (ii)  Tumor Growth Regulating Protein Technology, including, but
                  not limited to TIG and TGI Technology, both terms being as
                  defined in Exhibit B; or

            (iii) both (i) and (ii).





                                      -15-

<PAGE>   1
                                                                   EXHIBIT 10.27



                                  April, 1995

                             ONCOGENE SCIENCE, INC.


                                      and


                               CIBA-GEIGY Limited



                            COLLABORATIVE AGREEMENT
                               relating to TGF-Beta3
<PAGE>   2
           THIS AGREEMENT is made as of the 19th day of April, 1995.

                                    BETWEEN

                               CIBA-GEIGY LIMITED

                 of Klybeckstrasse 141, 4002 Basel, Switzerland

                   (hereinafter referred to as "CIBA-GEIGY")

                                      AND

                             ONCOGENE SCIENCE, INC.

                      of 106 Charles Lindbergh Boulevard,

                      Uniondale, New York 11553-3649, USA

                (hereinafter referred to as "ONCOGENE SCIENCE")

WHEREAS:

(A)  ONCOGENE SCIENCE has know-how and rights to TGF-Betas and has applied for
     patent rights to certain novel proteins, including TGF-Beta3.

(B)  By a License Agreement dated the 1st April, 1991 (the "1991 Agreement")
     made between ONCOGENE SCIENCE and PFIZER INC. ("PFIZER"), ONCOGENE SCIENCE
     granted to PFIZER the exclusive right to manufacture, have manufactured,
     use and sell products containing TGF-Beta3 for a range of indications
     including the Licensed Indications as hereinafter defined.

(C)  By an Addendum to the 1991 Agreement made between ONCOGENE SCIENCE and
     PFIZER on the 17th April, 1995, PFIZER surrendered to ONCOGENE SCIENCE all
     the rights relating to TGF-Beta3 granted to PFIZER pursuant to the 1993
     Agreement subject only to the reservation in favour of CIBA-GEIGY of those
     rights granted to CIBA-GEIGY under the Agreement dated the 11th August,
     1993, between ONCOGENE SCIENCE, CIBA-GEIGY and PFIZER ("the 1993
     Agreement").

(D)  CIBA-GEIGY wishes to take an exclusive license direct from ONCOGENE
     SCIENCE to manufacture, have manufactured, use and sell products
     containing the Compound (as defined in Clause 1.3) for the Licensed
     Indications (as defined in Clause 1.5) and ONCOGENE SCIENCE is willing to
     grant such a license to CIBA-GEIGY in substitution for the license granted
     to it under the 1993 Agreement on the terms and conditions hereinafter
     appearing.

(E)  The parties have agreed that the 1993 Agreement shall be terminated and
     replaced by this Agreement as from the date of its execution and delivery
     by both parties.
<PAGE>   3
(F)  CIBA-GEIGY also wishes to have the opportunity to acquire from ONCOGENE
     SCIENCE a license to manufacture, use and sell products containing
     TGF-Beta3 and other TGF-Betas for all other indications not now included 
     in the Licensed Indications.

(G)  CIBA-GEIGY has developed a process for the manufacture of certain 
     TGF-Betas.

(H)  ONCOGENE SCIENCE wishes to have the right to buy such TGF-Betas from
     CIBA-GEIGY and, subject as hereinafter mentioned, CIBA-GEIGY is willing to
     supply TGF-Betas to ONCOGENE SCIENCE on the terms hereinafter appearing.


NOW IT IS HEREBY AGREED as follows:

1.   DEFINITIONS

     The following terms where used in this Agreement shall, unless the context
     clearly indicates to the contrary, have the meanings set out below:

     1.1  "Affiliate" shall mean with respect to each party or a licensee or
          sub-licensee, any legal entity that directly or indirectly controls,
          is controlled by or is under common control with, such party,
          licensee or sub-licensee, but only for so long as such control shall
          continue.  One entity shall be deemed to control another entity if
          such entity has the power to direct or cause the direction of the
          management or policies of the other entity.

     1.2  "Combination Product" shall mean a Product containing the Compound in
          combination with one or more therapeutically active ingredients.

     1.3  "Compound" shall mean transforming growth factor Betas ("TGF-Betas") 
          as described in the OSI Patents.

     1.4  "Know-How" shall mean all information and material, technical data
          and other know-how invented, developed or acquired by, or under the
          control of any party hereto and which directly relates to the
          Compound or the Product, or to the development, manufacture or use of
          the same, including but not limited to chemical data, toxicological
          and other pre-clinical data, product forms and formulations, control
          assays and specifications and methods of preparation and stability
          data, all such data belonging to one party constituting that party's
          confidential information.  "CG Know-How" and "OSI Know-How" shall
          mean that Know-How belonging respectively to CIBA-GEIGY and ONCOGENE
          SCIENCE.  For the avoidance of doubt, the OSI Know-How shall be
          deemed to include the PFIZER Know-How as defined in the 1993
          Agreement.

     1.5  "Licensed Indications" shall mean (1) oral mucositis arising from the
          use of chemotherapy or radiation therapy in the treatment or
          prevention of cancer, and (2) topical or local (as opposed to
          systemic) application of the Products including, but not limited to,
          the healing of soft tissue wounds however caused, and the treatment
          of ophthalmic conditions and psoriasis, but excluding topical
          application in the





                                      -2-
<PAGE>   4
          gastrointestinal tract in the treatment or prevention of cancer or
          the management of side effects or adverse reactions arising from the
          use in the treatment or prevention of cancer of chemotherapy or
          radiation therapy; and also (3) all other indications deemed to be
          included in the Licensed Indications pursuant to Clause 5.8.

     1.6  "Major Country" shall mean any one of the following countries:  the
          United States of America, France, Germany, Italy, the United Kingdom.

     1.7  "Net Sales" shall mean the invoice price billed to Third Parties on
          the sale of the Products, less:
          (i)       trade and/or quantity discounts;
          (ii)      sales, value added or other excise taxes paid on the sale
                    of the Products;
          (iii)     amounts repaid or credited by reason of purchase
                    chargebacks, rebates, rejections or returns;
          (iv)      charges for freight, handling and transportation separately
                    billed; and
          (v)       rebates (including, but not limited to, all governmental
                    and managed health care rebates and hospital performance
                    incentive programme chargebacks).
          all to the extent actually allowed, accrued or taken, and as
          determined in accordance with CIBA-GEIGY's standard accounting
          procedures.

          In the case of Products which are Combination Products the parties
          will negotiate in good faith and agree on an equitable method of
          calculating the Net Sales having regard to the Net Sales of Products
          which are not Combination Products and the value of the active
          ingredient or ingredients other than the Compound.

     1.8  "OSI Patents" shall mean all of ONCOGENE SCIENCE's right, title and
          interest in and to the patents relating to TGF-Betas set out in 
          Schedule 1 hereto and corresponding foreign patents or applications 
          therefor, together with any patents issuing on the said applications,
          or any addition, continuation, continuation-in-part, division, 
          reissue, renewal or extension based thereon (including any 
          supplementary protection certificate ("SPC") based on the said 
          patents).

     1.9  "CG Patents" shall mean all of CIBA-GEIGY's right, title and interest
          in and to patents relating to processes for the manufacture of
          TGF-Betas including the Patents set out in Schedule 2 hereto and 
          corresponding foreign patents or applications therefor, together 
          with any patents issuing on the said applications, or any addition, 
          continuation, continuation-in-part, division, reissue, renewal or 
          extension based thereon (including any SPC based on the said patents).

     1.10 "Third Party Patents" shall mean the patents set out in Schedule 3
          hereto and corresponding foreign patents or applications therefor,
          together with any patents issuing on the said applications, or any
          addition, continuation, continuation-in-part, division, reissue,
          renewal or extension based thereon (including any SPC based on the
          said patents).

     1.11 "Products" shall mean pharmaceutical preparations containing the
          Compound designed for administration to human beings which fall
          within the scope of the claims of the OSI Patents.





                                      -3-
<PAGE>   5
     1.12 "Territory" shall mean all countries of the world.

     1.13 "Third Party" shall mean any person or legal entity, whether or not
          incorporated, other than any of the parties hereto or their
          respective Affiliates or CIBA-GEIGY's sub-licensees.

     1.14 "Year" shall mean a period of 12 calendar months commencing on the
          1st January.

     1.15 "Half Year" shall mean a period of six calendar months commencing on
          the 1st January or the 1st July in any Year.

2.   GRANT

     2.1  In consideration of the covenants on the part of CIBA-GEIGY
          hereinafter contained, ONCOGENE SCIENCE hereby grants to CIBA-GEIGY
          an exclusive license, with the right to grant sub-licenses, under the
          OSI Patents and OSI Know-How, the right to manufacture, use and sell
          the Products for the Licensed Indications within the Territory.

     2.2  ONCOGENE SCIENCE warrants that it is free to enter into this
          Agreement and to carry out all the obligations on its part contained
          herein.

     2.3  Within 30 days from the date hereof, ONCOGENE SCIENCE will deliver to
          CIBA-GEIGY such of the OSI Know-How as is in written form and is
          relevant to the Compound and Licensed Indications.

     2.4  ONCOGENE SCIENCE will pursue applications for the OSI Patents with
          reasonable diligence and will notify CIBA-GEIGY as and when patents
          are granted on the said applications.

     2.5  If ONCOGENE SCIENCE should decide to abandon any of the OSI Patents
          it shall notify CIBA-GEIGY, and CIBA-GEIGY shall have the right to
          take an assignment of the OSI Patent or Patents in question.

3.   SUPPLY OF TGF-Betas

     3.1  CIBA-GEIGY warrants that it owns or has rights to the CG Patents and
          that it is free to enter into this Agreement and to carry out the
          obligations on its part contained herein.

     3.2  CIBA-GEIGY warrants that it is the licensee under the Third Party
          Patents which entitles it to manufacture TGF-Betas without infringing
          such patents.

     3.3  (a)  CIBA-GEIGY agrees to establish processes for the manufacture of
          TGF-Beta3 and of such other TGF-ps as shall be agreed from time to
          time between itself and ONCOGENE SCIENCE, and, subject as hereinafter
          mentioned, agrees to supply to ONCOGENE SCIENCE, and ONCOGENE SCIENCE
          agrees to purchase from





                                      -4-
<PAGE>   6
          CIBA-GEIGY the quantities of TGF-Betas required by it for research
          and development purposes.

          (b)  ONCOGENE SCIENCE acknowledges that it is its present intention
          to purchase, and, subject as hereinafter mentioned, shall purchase
          from CIBA-GEIGY, and CIBA-GEIGY shall supply, the quantities of
          TGF-Betas required by ONCOGENE SCIENCE for commercial purposes.  If
          ONCOGENE SCIENCE should decide not to purchase its commercial
          requirements of TGF-Betas from CIBA-GEIGY as from or at any time
          subsequent to the date of commercial launch of the Products, it shall
          give CIBA-GEIGY not less than 36 months' prior notice in writing of
          that decision.  Upon expiry of such notice ONCOGENE SCIENCE shall be
          relieved of its obligation to purchase, and CIBA-GEIGY shall be
          relieved of its obligation to supply, such commercial requirements.

          (c)  For the avoidance of doubt, it is agreed by the parties that
          CIBA-GEIGY shall not be required to manufacture or supply TGF-Betas
          pursuant to this Agreement if by so doing it would be liable to suit
          for infringement or contributory infringement of the intellectual
          property rights of a Third Party.

          (d)  The processes to be developed by CIBA-GEIGY pursuant to this
          Clause shall initially be adequate to meet the requirements of itself
          and its sub-licensees, of ONCOGENE SCIENCE, and the licensees of
          ONCOGENE SCIENCE, for research and development purposes and clinical
          trials as foreseen at the date of this Agreement.  It is the
          intention of CIBA-GEIGY to scale up such processes to meet the
          estimated future requirements of itself and ONCOGENE SCIENCE for
          commercial quantities of the Compound.  Should it fail to do so, or
          if processing capacity should prove to be inadequate to meet all
          ONCOGENE SCIENCE actual requirements and CIBA-GEIGY should be
          unwilling to invest in additional capacity, it agrees if so requested
          to grant a license to ONCOGENE SCIENCE under the CG Patents and CG
          Know-How to produce the Compound on terms to be negotiated in good
          faith, the financial terms to be reasonable having regard to the cost
          of supplies of the Compound as at the date of the license
          negotiations, the cost to ONCOGENE SCIENCE of procuring the grant of
          licenses for any parts of the process covered by Third Party Patents,
          and the estimated production costs of ONCOGENE SCIENCE.  CIBA-GEIGY
          will also provide reasonable assistance to ONCOGENE SCIENCE with
          plant design and operations so far as its resources permit.

          (e)  CIBA-GEIGY will notify ONCOGENE SCIENCE promptly should it
          decide not to scale up manufacture of the Compound or to discontinue
          manufacture thereof.  For a period of 36 months following such
          notification, unless a shorter period should be agreed in writing by
          the parties hereto, CIBA-GEIGY shall continue to supply the Compound
          to ONCOGENE SCIENCE in accordance with the arrangements hereinafter
          set out, it being understood, however, that CIBA-GEIGY shall not be
          obliged to produce quantities of the Compound for its own consumption
          and for supply to ONCOGENE SCIENCE in excess of the production
          capacity available to it at the time of such notification.





                                      -5-
<PAGE>   7
          (f)  Upon the request of ONCOGENE SCIENCE to be made in writing not
          less than one year in advance of the date when such supplies are
          required, CIBA-GEIGY will manufacture and store for ONCOGENE SCIENCE,
          and ONCOGENE SCIENCE will purchase and pay storage for up to a
          one-year supply of Compound as projected in the ordinary course of
          business.  In the event that CIBA-GEIGY is unable to supply the
          Compound to ONCOGENE SCIENCE for a period of 90 days by reason of
          force majeure or otherwise, it will use all commercially reasonable
          endeavours to have an alternative plant for the production of the
          Compound validated within one year from the date of cessation of
          supply.

     3.4  The ex-works price at which CIBA-GEIGY shall supply the Compound to
          ONCOGENE SCIENCE for use for pre-clinical and clinical purposes shall
          be equal to CIBA-GEIGY's cost of manufacture, including overheads,
          calculated in accordance with its standard accounting practices
          ("Manufacturing Cost"), freight, transport and insurance charges
          incurred in delivering the material to the purchasing party, and
          royalties to third parties for bulk material, but shall exclude any
          profit element.

     3.5  (a)  The ex-works price at which and all other terms and conditions
          on which CIBA-GEIGY shall supply the Compound for the manufacture of
          products for subsequent sale shall be negotiated by the parties in
          good faith prior to the date of commencement of supply.  However, if
          the parties should be unable to reach agreement on price during such
          negotiations then the price shall be equal to the Manufacturing Cost,
          plus any freight, transport and insurance charges incurred by
          CIBA-GEIGY in shipping the Compound to ONCOGENE SCIENCE plus an
          amount equal to eight per cent (8%) of ONCOGENE SCIENCES' and its
          licensees' Net Sales.  In the latter case, payments shall be
          calculated and paid as mentioned in Clause 3.5(c).

          (b)  Payment for the said supplies shall be made by ONCOGENE SCIENCE
          in two installments, as follows:

               (i)  the first installment, being an amount equal to the
               Manufacturing Cost, plus freight, transport and insurance
               charges, shall be paid within thirty (30) days of the end of the
               month in which the supplies are delivered;

               (ii) the second installment, being an amount equal to eight per
               cent (8%) of ONCOGENE SCIENCE's and its licensees' Net Sales of
               the Products and/or of the Compound during each Half Year, shall
               be paid within sixty (60) days of the end of such Half Year.

          (c)  Notwithstanding the provisions hereinbefore contained, if CIBA-
          GEIGY's weighted average Manufacturing Cost per gram of Compound
          supplied to ONCOGENE SCIENCE in any Year, expressed as a percentage
          (the "Actual Percentage") of ONCOGENE SCIENCE's weighted average Net
          Sales Value per active gram of Product sold by ONCOGENE SCIENCE and
          its licensees in the same Year should be less than four per cent
          (4%), then, in addition to the amounts mentioned in Clause 3.5(b),
          ONCOGENE SCIENCE shall pay to CIBA-GEIGY a percentage of its and its
          licensees Net Sales equal to one half of the difference between four
          per cent (4%) and the Actual Percentage.  For the purposes of this
          calculation,





                                      -6-
<PAGE>   8
          the Net Sales Value per active gram shall be determined by dividing
          the Net Sales of ONCOGENE SCIENCE and its licensees by the number of
          grams and/or parts of a gram of the Compound contained in the
          quantities of the Product sold. (An example of a calculation using
          hypothetical figures is set out in Schedule 4 hereto.)

          Such payment shall be made at the same time as the second payment due
          under Clause 3.5(b)(ii) in respect of the Half Year ending on the
          31st December of that Year.

          (d)  ONCOGENE SCIENCE shall be entitled to have CIBA-GEIGY's cost of
          manufacture and overhead confirmed by an independent firm of
          accountants to which CIBA-GEIGY has no reasonable objection, but not
          more than once in any Year PROVIDED HOWEVER that such firm of
          accountants shall only report to ONCOGENE SCIENCE the amount of such
          costs, including overheads, and shall keep confidential all other
          information acquired in the course of the examination.

          (e)  ONCOGENE SCIENCE shall supply to CIBA-GEIGY within 60 days of
          the end of each Half Year a statement showing the Net Sales during
          such Half Year of Products produced from the Compound.

          (f)  ONCOGENE SCIENCE shall keep accurate records in sufficient
          detail to enable the price of the Compound to be calculated and shall
          maintain such records for a period of two Years after the end of the
          period to which they relate.  CIBA-GEIGY shall be entitled to have
          such records examined during normal working hours by an independent
          firm of accountants to which ONCOGENE SCIENCE has no reasonable
          objection (but not more than once in any one Year) so as to verify
          the correctness of any royalty payment PROVIDED HOWEVER that such
          firm of accountants shall only report to CIBA-GEIGY the correct
          amount of net sales, and shall keep confidential all other
          information acquired in the course of such examination.

          (g)  Not later than the end of each Year ONCOGENE SCIENCE will supply
          to CIBA-GEIGY an estimate of its requirement of the Compound during
          the ensuing three Years, and will update this estimate at six-monthly
          intervals.  CIBA-GEIGY will notify ONCOGENE SCIENCE within 30 days of
          receipt of such estimate if it will be unable to supply the whole or
          any part of the requirements mentioned in such estimate.

          (h)  Together with the three-year estimate, ONCOGENE SCIENCE will
          deliver to CIBA-GEIGY firm orders for its requirements of the
          Compound not less than twelve (12) months in advance of the required
          date of delivery.  CIBA-GEIGY shall fulfill such orders provided that
          the quantifies specified therein do not exceed those quantities
          contained in the previous estimate for the same period and provided
          that CIBA-GEIGY has not previously advised ONCOGENE SCIENCE that it
          will be unable to supply all or part of such quantities.

          All other terms of supply and purchase shall be negotiated by the
          parties in good faith.

     3.6  Apart from material supplied for research purposes and for the
          Licensed Indications, CIBA-GEIGY will not during the life of the OSI
          Patents supply the Compound to any





                                      -7-
<PAGE>   9
          Third Party without the prior consent of ONCOGENE SCIENCE, provided
          that such consent shall not be unreasonably withheld or delayed.

     3.7  It is a condition precedent to the performance by the parties hereto
          of their respective obligations under this Agreement that CIBA-GEIGY
          shall have delivered copies of the License Agreements under the Third
          Party Patents to ONCOGENE SCIENCE.

4.   DEVELOPMENT

     4.1  Subject as herein mentioned, CIBA-GEIGY will pursue the development
          of the Products for the Licensed Indications wound healing, psoriasis
          and oral mucositis with reasonable diligence.  ONCOGENE SCIENCE will
          cooperate fully and accept certain responsibilities as set forth
          below.

          4.1.1     ONCOGENE SCIENCE will be responsible for developing the
                    Compound through Phase I clinical trials for Oral
                    Mucositis, in consultation with CIBA-GEIGY based on a
                    protocol approved by CIBA-GEIGY, and ONCOGENE SCIENCE will
                    pay for all Phase I Oral Mucositis expenses from its funds,
                    except those studies done directly by CIBA-GEIGY or under
                    the direction or control of CIBA-GEIGY.

          4.1.2     ONCOGENE SCIENCE agrees that if so requested by CIBA-GEIGY
                    it is willing to assume responsibility for Phase II trials
                    for Oral Mucositis in accordance with CIBA-GEIGY's standard
                    operating procedures for clinical trials and based on a
                    protocol approved by CIBA-GEIGY in consultation with
                    CIBA-GEIGY, with the expense of the Phase II trials to be
                    paid by CIBA-GEIGY in accordance with a budget to be
                    mutually agreed by the parties in advance.

          4.1.3     CIBA-GEIGY will be responsible for Phase III trials for
                    Oral Mucositis and will pay the expense of the trials, in
                    consultation with ONCOGENE SCIENCE.  ONCOGENE SCIENCE is
                    willing to assume responsibility for Phase III trials in
                    any respect requested by CIBA-GEIGY, with expenses to be
                    paid by CIBA-GEIGY.

          4.1.4     CIBA-GEIGY will be responsible for the development of the
                    Compound for Licensed Indications, other than Oral
                    Mucositis, in consultation with ONCOGENE SCIENCE, and will
                    pay all expenses.

     4.2  CIBA-GEIGY shall have the right to discontinue development of the
          Products at any time.

     4.3  If CIBA-GEIGY should decide to discontinue the development of the
          Products it shall promptly notify ONCOGENE SCIENCE and thereupon:

          (a)  all licenses granted hereunder to CIBA-GEIGY will automatically
               terminate.





                                      -8-
<PAGE>   10
          (b)  CIBA-GEIGY will make available to ONCOGENE SCIENCE for use by
               ONCOGENE SCIENCE or its sub-licensees the results of all
               development work carried out up to the date of discontinuance
               (including rights under any patents or CG Know-How developed by
               CIBA-GEIGY so far as they relate exclusively to the Products) on
               terms to be negotiated in good faith.

          (c)  the provisions with regard to supply of the Compound and the
               licensing of the process for the manufacture of the Compound set
               out in Clause 3 shall remain binding on CIBA-GEIGY for a period
               of three years from the date of such notification.  CIBA-GEIGY
               may at its discretion opt to continue the supply of the
               Compound, in which event the parties will enter into an
               Agreement for the supply of the Compound on the same terms as to
               price and ordering as set out herein and on such other terms as
               shall be mutually agreed.

          (d)  CIBA-GEIGY will return to ONCOGENE SCIENCE all documents
               received from ONCOGENE SCIENCE containing OSI Know-How.

     4.4  The parties will cooperate with one another, and ONCOGENE SCIENCE
          shall ensure that its licensees cooperate with CIBA-GEIGY, with a
          view to facilitating the regulatory approval and commercialization of
          products containing the Compound, and in particular will share
          Know-How relating to such products.

     4.5  During the term of this Agreement and to the extent necessary to give
          effect to the purposes of this Agreement each of the parties will
          disclose to the other any new Know-How coming to its attention,
          including, but not limited to, information which would modify or
          supplement to a material degree information disclosed to the other
          party pursuant to the preceding provisions of this Agreement, or
          which in the reasonable opinion of that party could have a material
          bearing on the other party's testing, registration or marketing of
          products produced from the Compound.

     4.6  For the purpose of limiting infringing or off-label use of a product
          produced from the Compound each of the parties agrees to use all
          commercially reasonable efforts to develop products formulated or
          presented in such a manner as to make them difficult to use in the
          other party's licensed indications.

5.   PAYMENT OF ROYALTIES AND FOR RIGHTS GRANTED

     5.1  In consideration of the license and rights hereby granted, CIBA-GEIGY
          agrees to pay ONCOGENE SCIENCE the royalties herein set forth and to
          purchase ONCOGENE SCIENCE common stock as set forth in clauses 5.7
          and 5.8, or alternatively, at CIBA-GEIGY's option to pay the
          respective milestone fees in lieu of purchasing stock as set forth in
          clauses 5.7 and 5.8.

     5.2  CIBA-GEIGY agrees to pay ONCOGENE SCIENCE a royalty of 8% of Net
          Sales of the Products made by CIBA-GEIGY or its sub-licensees during
          the royalty period.  The royalty period shall be calculated on a
          country-by-country basis and shall commence on the date of commercial
          launch of any of the Products in each country and shall end on the
          date of expiry of the Patents in the country.





                                      -9-
<PAGE>   11
     5.3  If ONCOGENE SCIENCE shall not have applied for any Patent in a
          particular country or if patent protection for the Products should be
          refused or revoked, the rate of royalty payable on Net Sales in that
          country shall be reduced by half.  Royalties under this Clause 5.3
          shall be payable for a period of ten years from the date of
          commercial launch in the country in question.

     5.4  No later than 60 days after the end of each Half Year CIBA-GEIGY
          shall deliver to ONCOGENE SCIENCE a statement showing its and its
          sub-licensees Net Sales of the Products invoiced during such Half
          Year, and shall pay to ONCOGENE SCIENCE the amount of royalty due on
          such Net Sales.

     5.5  CIBA-GEIGY shall keep accurate records in sufficient detail to enable
          the amount of the royalties due hereunder to be calculated and shall
          maintain such records for a period of two Years after the end of the
          period to which they relate.  ONCOGENE SCIENCE shall be entitled to
          have such records examined during normal working hours by an
          independent firm of accountants to which CIBA-GEIGY has no reasonable
          objection so as to verify the correctness of any royalty payment
          PROVIDED HOWEVER that such firm of accountants shall only report to
          ONCOGENE SCIENCE the correct amount of Net Sales and the amount of
          royalty due to ONCOGENE SCIENCE and shall keep confidential all other
          information acquired in the course of such examination.

     5.6  (a)  Royalties shall be paid in US dollars into such accounts as
          shall be nominated by ONCOGENE SCIENCE for that purpose.  Net Sales
          in currencies other than US dollars shall be converted into US
          dollars at the rate of exchange prevailing on the last day of the
          Half Year to which they relate.

          (b)  If CIBA-GEIGY is obliged to deduct withholding tax on royalties,
          the royalties shall be paid net of withholding tax.  CIBA-GEIGY will
          deliver to ONCOGENE SCIENCE receipts or other evidence of payment
          issue any the relevant tax authorities to enable it to claim any
          available double-taxation relief.

     5.7  CIBA-GEIGY agrees to pay ONCOGENE SCIENCE $5 million in cash at the
          time this Agreement is signed, or to purchase ONCOGENE SCIENCE common
          stock to the value of $5,000,000.50 at a price of $5.50 per share in
          accordance with the terms of the Stock Subscription and Purchase
          Agreement ("the Stock Purchase Agreement") contained in Schedule 5.
          In recognition of this payment or investment, CIBA-GEIGY is hereby
          granted an option to include all other indications for the Compound
          in the Licensed Indications, upon making the milestone payment or
          stock purchase set forth in Clause 5.8, such option to be exercised,
          if at all, within 60 days of the decision by CIBA-GEIGY to initiate
          full development of the Product (i.e. Phase IIb or Phase III clinical
          trials for Oral Mucositis (which decision shall be communicated
          promptly to ONCOGENE SCIENCE in writing) or within four years from
          the date hereof whichever is the earlier.  For the avoidance of
          doubt, it is agreed that unless CIBA-GEIGY advises ONCOGENE SCIENCE
          to the contrary, the option shall be deemed to have been
          automatically exercised by CIBA-GEIGY upon making the said milestone
          payment or the said stock purchase in accordance with Clause 5.8
          without





                                      -10-
<PAGE>   12
          the need for further notification to ONCOGENE SCIENCE.  The option
          shall automatically lapse if it is not exercised within the time
          limits hereinbefore prescribed.

     5.8  Within 60 days after the earlier of: (a) the date of the decision by
          CIBA-GEIGY to initiate full development (as defined in Clause 5.7) of
          the Product for Oral Mucositis, or (b) the exercise of the option set
          out in Clause 5.7, CIBA-GEIGY agrees either to make a milestone
          payment of $10 million in cash to ONCOGENE SCIENCE or to purchase
          ONCOGENE SCIENCE common stock to the value of $10 million at the
          higher of EITHER the average closing price for the 30-day period
          ending on the date of purchase or $5.50 per share.  Upon making this
          milestone payment or completion of the stock purchase, all other
          indications for the Compound not already licensed to CIBA-GEIGY shall
          be deemed to be included in the Licensed Indications.  The retention
          of the rights to such other indications shall be subject to the
          provisions of the Stock Purchase Agreement.

6.   DEFENSE OF PATENTS, INFRINGEMENTS, ETC.

     6.1  Each of the parties hereto agrees to notify the other party if it
          should become aware of any infringement or threatened infringement of
          the Patents.

     6.2  ONCOGENE SCIENCE shall have the prior right, but not the obligation,
          to bring legal proceedings against an infringer of the OSI Patents or
          to take such other action against such infringer as it thinks fit
          PROVIDED HOWEVER that it shall not settle or compromise any such
          action where the infringing act involved the sale of products for one
          of the Licensed Indications without obtaining the prior written
          agreement of CIBA-GEIGY, such agreement not to be unreasonably
          withheld or delayed.  If so requested, CIBA-GEIGY will provide
          reasonable assistance in connection with any such proceedings or
          other action.

     6.3  With respect to Licensed Indications, if ONCOGENE SCIENCE should fail
          to institute proceedings against an infringer of the OSI Patents
          within 60 days of the receipt of information of such infringement or
          threatened infringement CIBA-GEIGY shall have the night to institute
          proceedings in its own name where practicable, or otherwise in the
          name of ONCOGENE SCIENCE, to prevent or put an end to the
          infringement, including, at its option, the filing of a claim for
          damages.  In this event ONCOGENE SCIENCE shall do all such things as
          are reasonably necessary to enable CIBA-GEIGY to institute such
          proceedings and shall cooperate with CIBA-GEIGY in the conduct of
          such proceedings.

     6.4  Any damages and costs recovered from the infringer in proceedings
          brought or other action taken against the infringer pursuant to
          Clause 6.2 or 6.3 shall be applied firstly in defraying the legal
          costs and expenses of the proceedings.  Any surplus remaining shall
          be used to compensate whichever of ONCOGENE SCIENCE or CIBA-GEIGY has
          incurred losses as the result of the infringement, and if both of
          them shall have incurred losses, the surplus shall be divided between
          them in proportion to their respective losses.  If the net amount of
          damages and costs recovered exceeds the legal costs and expenses and
          their respective losses, the surplus remaining shall be paid to
          ONCOGENE SCIENCE.





                                      -11-
<PAGE>   13
     6.5  If CIBA-GEIGY shall be unable to exploit the license hereby granted
          without infringing the patent rights of a Third Party, ONCOGENE
          SCIENCE will use all reasonable endeavours to obtain an unblocking
          license.  If they shall fail to do so, CIBA-GEIGY shall be entitled
          to negotiate the terms of a license for itself and its sub-licensees
          directly with the Third Party.  If under such a license CIBA-GEIGY is
          obliged to pay a lump sum or royalty to the Third Party, it shall be
          entitled to deduct the amount of such lump sum or royalty from the
          royalties due to ONCOGENE SCIENCE hereunder, provided, however that
          the deduction in any one Year shall not cause the royalty to be paid
          by CIBA-GEIGY to ONCOGENE SCIENCE in that year to be reduced below 5
          percent.

7.   CONFIDENTIALITY

     7.1  For the purposes of this Clause 7, "Confidential Information" shall
          mean all information, whether technical, commercial, or otherwise
          (including, but not limited to, Know-How, technical and non-technical
          materials and specifications) disclosed by any of the parties hereto,
          or its Affiliates, licensees or sub-licensees (the "Discloser") to
          the other party or any of its Affiliates, licensees or sub-licensees
          (the "Receiver") which the Discloser deems to be confidential and
          proprietary to the Discloser, other than information which the
          Receiver can show to the reasonable satisfaction of the Discloser:

               (i)       was already in the possession or control of the
                         Receiver prior to the time of disclosure;
               (ii)      is at the time of disclosure or thereafter becomes
                         available to the public otherwise than as the result
                         of any fault or omission by the Receiver or any
                         employee of the Receiver contrary to the terms of this
                         Agreement;
               (iii)     is disclosed to the Receiver by a third party who did
                         not acquire it directly or indirectly from the
                         Discloser in confidence;
               (iv)      is approved for release by the Discloser.

     7.2  Each of the parties hereto agrees that it will not use any
          Confidential Information disclosed to it by the other party except
          for the purposes of the development, registration, manufacture, use
          and sale of Products produced from the Compound pursuant to the terms
          of this Agreement and that, except as required by law it will not
          disclose the Confidential Information to any Third Party without the
          consent of the Discloser PROVIDED HOWEVER that such consent shall be
          deemed to have been given to disclosure of the Confidential
          Information to those of its Affiliates, or sub-licensees or to those
          of its officers or employees, or officers or employees of such
          Affiliates, licensees or sub-licensees who require to have the
          Confidential Information in connection with the development,
          registration, manufacture, use or sale of the Products produced from
          the Compound, but only if such Affiliates, licensees, sub-licensees,
          officers or employees are bound by obligations of confidentiality no
          less strict than those set out herein.





                                      -12-
<PAGE>   14
     7.3  Each of the parties agrees to notify the Discloser forthwith in the
          event that it should become aware of the disclosure or use of the
          Discloser's Confidential Information contrary to the terms hereof.

     7.4  All proprietary rights (including, but not limited to, patent rights
          and trade secrets) in and to the Confidential Information shall
          remain the property of the Discloser.

     7.5  The obligations set out in this Clause 7 shall remain binding on the
          parties hereto either for the term of this Agreement and for a period
          of five (5) years thereafter or for a term of ten (10) years from the
          date hereof, whichever is the longer.

8.   PUBLIC ANNOUNCEMENTS

     Except as required by law, neither the existence nor the terms of this
     Agreement nor the arrangements contemplated herein shall be disclosed by
     any party to any Third Party or made public without the prior written
     agreement of the other party, such agreement not to be unreasonably
     withheld or delayed.


9.   TERM AND TERMINATION

     9.1  This Agreement shall come into operation on the date hereof, and,
          subject to the provisions for earlier termination set out herein,
          shall remain in force until the expiry of the last to expire of the
          OSI Patents in the Territory.

     9.2  The 1993 Agreement is hereby terminated.

     9.3  Each of the parties shall be entitled to terminate this Agreement
          with immediate effect by notice in writing to the other in either of
          the following events:

               (i)  If the other party owes an obligation hereunder, and should
                    commit or permit a material breach of such obligation and
                    shall fail or be unable to cure such breach within 60 days
                    of receipt of notice specifying the breach;

               (ii) If the other party should go into liquidation otherwise
                    than for the purpose of reconstruction or amalgamation; or
                    if a petition should be presented for its dissolution or
                    winding up and such petition should not be withdrawn or
                    dismissed within 60 days of its presentation; or if a
                    receiver or manager should be appointed of its assets; or
                    if it should enter into any composition with its creditors.

     9.4  Termination or expiry of this Agreement shall not affect the rights
          of any party against the other party in respect of any antecedent
          breach of the terms hereof, nor the rights or obligations of any
          party pursuant to the provisions of Clause 5 with regard to royalty
          payments in respect of Net Sales of the Products up to the date of
          termination or expiry, Clause 7 in respect of confidentiality and
          Clause 10 in respect of indemnities.





                                      -13-
<PAGE>   15
     9.5  The expiration or termination of this Agreement, if brought about as
          referred to in Clause 9.2 by the expiry of the Patents or if
          CIBA-GEIGY should terminate this Agreement pursuant to Clause 9.2,
          shall not terminate the night of CIBA-GEIGY to continue to use OSI
          Know-How or to manufacture, have manufactured, use and sell the
          Products in the Territory.

     9.6  Notwithstanding expiry of this Agreement by effluxion of time or
          termination pursuant to Clause 4.3 hereof, if at the relevant time
          CIBA-GEIGY is supplying ONCOGENE SCIENCE with its requirements of the
          Compound, it will continue to do so on the same terms as to supply as
          are then in force.  In such case and if so requested by CIBA-GEIGY,
          ONCOGENE SCIENCE will enter into a formal Supply Agreement
          incorporating such terms.

10.  INDEMNITIES

     10.1 Each of the parties hereto shall hold harmless and indemnify the
          other party hereto from and against any claim for damages for human
          bodily injury or death resulting from the ingestion or use of any
          products produced from the Compound and sold by the indemnifying
          party or its Affiliates or sub-licensees except to the extent that
          such injury or death is attributable to the negligence or intentional
          misconduct of the party seeking indemnity.

     10.2 The party seeking indemnity shall promptly notify the indemnifying
          party of any such claim, and shall allow the indemnifying party
          and/or its insurers the opportunity to assume the direction and
          control of the defense of such claim, including, without limitation,
          the settlement thereof at the sole discretion of the indemnifying
          party or its insurers, except to the extent that the indemnifying
          party alleges that there has been negligence or intentional
          misconduct on the part of the party seeking indemnity.  The party
          seeking indemnity shall cooperate with the indemnifying party and/or
          its insurers in the defense and disposition of any such claim.

11.  ASSIGNMENT

     11.1 Each party hereto may assign the whole or any part of its rights and
          obligations under this Agreement to any of its Affiliates or to any
          successor to the whole of its pharmaceutical business.  Save as
          mentioned in this Clause 11.1, none of the parties hereto may assign
          its rights and obligations hereunder to any Third Party without first
          obtaining the written consent of the other party hereto.

     11.2 If so requested by the other party, the party assigning its rights
          and obligations hereunder shall procure that the assignee will
          undertake directly with the other party to perform the obligations
          assigned to it.  Pending the giving of such undertaking, the
          assigning party shall remain responsible for the performance of such
          obligations by the assignee.

     11.3 Written notice of any assignment permitted under Clause 11.1 hereof
          shall be given by the assigning party to the other within seven (7)
          days after the date of such assignment.





                                      -14-
<PAGE>   16
     11.4 CIBA-GEIGY shall be entitled to grant sub-licenses to any of its
          Affiliates and to Third Parties to manufacture or have manufactured,
          use and sell the Products in any country of the Territory.
          CIBA-GEIGY will ensure that the terms of any such sub-license impose
          on the sub-licensee obligations no less onerous than those accepted
          by it hereunder, including, but not limited to, obligations relating
          to the keeping of records, provision and verification of sales
          returns, payment of royalties, indemnities and confidentiality.

12.  MISCELLANEOUS

     12.1 APPLICABLE LAW, ETC.  This Agreement shall be construed and applied
          in accordance with the laws of the State of New York.  Venue shall be
          New York.

     12.2 NOTICES.  Any notices required or authorized to be served hereunder
          shall be deemed to have been properly served if delivered by hand, or
          sent by registered or certified mail, or sent by facsimile
          transmission confirmed by registered or certified mail, to the party
          to be served at the address specified by such party for that purpose,
          or, if no such address is specified, at the address given at the head
          of this Agreement.

     12.3 ENTIRE AGREEMENT.  This Agreement represents the entire agreement and
          understanding between the parties relating to the subject matter
          hereof, and supersedes all documents or verbal consents or
          understandings (if any) given or made between the parties prior to
          the date hereof.  None of the terms hereof may be amended or modified
          except by an instrument in writing signed by authorized
          representatives of the parties hereto.

     12.4 WAIVERS.  Any delay or omission on the part of any party in the
          exercise of its strict rights hereunder will not impair those rights
          nor will it constitute a renunciation or waiver of those rights.  Any
          waiver by any party of any term or condition of this Agreement in any
          one instance shall not be deemed or construed to be a waiver of such
          term or condition for any other instance in the future (whether
          similar or dissimilar) or of any subsequent breach hereof.  All
          rights, remedies, undertakings, obligations and agreements contained
          in this Agreement shall be cumulative, and none of them shall be a
          limitation of any other right, remedy, undertaking, obligation, or
          agreement of any of the parties.

     12.5 FORCE MAJEURE.  None of the parties hereto shall be liable to the
          other party for any failure to perform any obligation on its part
          hereunder to the extent that such failure is due to circumstances
          beyond its reasonable control, including in particular war, act of
          God, strike, lock-out, Government intervention, riot or civil
          commotion, plant breakdown and scarcity or nonavailability of raw
          materials.  It shall however notify the other party as soon as
          practicable of the occurrence of any such circumstance, and the
          parties shall meet to consider what steps, if any, can be taken to
          overcome any difficulties thereby occasioned.

     12.6 HEADINGS.  Headings in this Agreement are included for ease of
          reference only and have no legal effect.





                                      -15-
<PAGE>   17
AS WITNESS the signatures of the representatives of the parties hereto the day
and year first above written.


ONCOGENE SCIENCE, INC.


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

Name:
     ----------------------------

Title:
      ---------------------------


CIBA-GEIGY Limited

By:

Names:         M. Sundman                         R.E. Walker
Titles:        Head of Business Development       Division Counsel





                                      -16-
<PAGE>   18
                                   SCHEDULE 1

                              List of OSI Patents


<TABLE>
<CAPTION>
COUNTRY       APPLICATION/PATENT NO.  FILING DATE      EXPIRY DATE
<S>                <C>                <C>              <C>
Australia            600230           21.04.1986       21.04.2002
Australia            620795           19.10.1987       19.10.2003
Australia           57293/90          17.05.1990       17.05.2006
Australia           81828/91          25.06.1991       25.06.2007
Australia           83958/91          25.06.1991       25.06.2007
Austria            200090 (E)         15.04.1986       15.04.2006
Austria            384494 (E)         20.10.1987       20.10.2007
Austria            508883 (E)         17.04.1990       17.04.2010
Austria            536275 (E)         25.06.1991       25.06.2011
Austria            538395 (E)         25.06.1991       25.06.2011
Belgium            200090 (E)         15.04.1986       15.04.2006
Belgium            384494 (E)         20.10.1987       20.10.2007
Belgium            508983 (E)         17.04.1990       17.04.2010
Belgium            536275 (E)         25.06.1991       25.06.2011
Belgium            538395 (E)         25.06.1991       25.06.2011
Canada               1274471          18.04.1986       18.04.2006
Canada              549582-2          20.10.1987       20.10.2007
Canada              2056981-6         17.05.1990       17.05.2010
Canada               2084992          25.06.1991       25.06.2011
Canada               2084510          25.06.1991       25.06.2011
Denmark            536275 (E)         25.06.1991       25.06.2011
Denmark            538395 (E)         25.06.1991       25.06.2011
EPO                200090 (E)         15.04.1986       15.04.2006
EPO                384494 (E)         20.10.1987       20.10.2007
EPO                508983 (E)         17.04.1990       17.04.2010
EPO                536275 (E)         25.06.1991       25.06.2011
EPO                538395 (E)         25.06.1991       25.06.2011
France             200090 (E)         15.04.1986       15.04.2006
France             384494 (E)         20.10.1987       20.10.2007
France             508983 (E)         17.04.1990       17.04.2010
France             536275 (E)         25.06.1991       25.06.2011
France             538395 (E)         25.06.1991       25.06.2011
Germany             36 87 241         15.04.1986       15.04.2006
Germany            384494 (E)         20.10.1987       20.10.2007
Germany            508983 (E)         17.04.1990       17.04.2010
Germany            536275 (E)         25.06.1991       25.06.2011
Germany            538395 (E)         25.06.1991       25.06.2011
Great Britain      200090 (E)         15.04.1986       15.04.2006
Great Britain      384494 (E)         20.10.1987       20.10.2007
Great Britain      508983 (E)         17.04.1990       17.04.2010
Great Britain      536275 (E)         25.06.1991       25.06.2011
</TABLE>





                                      -17-
<PAGE>   19
                             Schedule 1 (continued)
                              List of OSI Patents


<TABLE>
<S>               <C>                 <C>              <C>
Great Britain      538395 (E)         25.06.1991       25.06.2011
Greece             384494 (E)         20.10.1987       20.10.2007
Greece             536275 (E)         25.06.1991       25.06.2011
Greece             538395 (E)         25.06.1991       25.06.2011
Ireland              971/86           14.04.1986       14.04.2006
Ireland              2809/87          19.10.1987       19.10.2007
Israel (Div.)        103617           20.04.1986       20.04.2006
Israel                78546           20.04.1986       20.04.2006
Israel                84211           19.10.1987       19.10.2007
Italy              20732BE/93         15.04.1986       15.04.2006
Italy              384494 (E)         20.10.1987       20.10.2007
Italy              509983 (E)         17.04.1990       17.04.2010
Italy              536275 (E)         25.06.1991       25.06.2011
Italy              538395 (E)         25.06.1991       25.06.2011
Japan               089844/86         18.04.1986
Japan               265201/87         20.10.1987
Japan               514242/91         25.06.1991
Japan               513051/91         25.06.1991
Japan               508246/90         17.05.1990
Liechtenstein      200090 (E)         15.04.1986       15.04.2006
Liechtenstei      n384494 (E)         20.10.1987       20.10.2007
Liechtenstein      509983 (E)         17.04.1990       17.04.2010
Liechtenstein      536275 (E)         25.06.1991       25.06.2011
Liechtenstein      538395 (E)         25.06.1991       25.06.2011
Luxembourg         200090 (E)         15.04.1986       15.04.2006
Luxembourg         384494 (E)         20.10.1987       20.10.2007
Luxembourg         508983 (E)         17.04.1990       17.04.2010
Luxembourg         538395 (E)         25.06.1991       25.06.2011
Luxembourg         536275 (E)         25.06.1991       25.06.2011
Netherlands        200090 (E)         15.04.1986       15.04.2006
Netherlands        384494 (E)         20.10.1987       20.10.2007
Netherlands        508983 (E)         17.04.1990       17.04.2010
Netherlands        536275 (E)         25.06.1991       25.06.2011
Netherlands        538395 (E)         25.06.1991       25.06.2011
New Zealand           215887          18.04.1986       18.04.2002
New Zealand           222168          14.10.1987       14.10.2003
Spain                 554177          18.04.1986       18.04.2006
Spain                 8702981         19.10.1987       19.10.2007
Spain              508983 (E)         17.04.1990       17.04.2010
Spain              536275 (E)         25.06.1991       25.06.2011
Spain              538395 (E)         25.06.1991       25.06.2011
Sweden             384494 (E)         20.10.1987       20.10.2007
Sweden             508983 (E)         17.04.1990       17.04.2010
Sweden             536275 (E)         25.06.1991       25.06.2011
</TABLE>





                                      -18-
<PAGE>   20
                             Schedule 1 (continued)
                              List of OSI Patents


<TABLE>
<S>                <C>               <C>               <C>
Sweden             538395 (E)         25.06.1991       25.06.2011
Switzerland        200090 (E)         15.04.1986       15.04.2006
Switzerland        384494 (E)         20.10.1987       20.10.2007
Switzerland        508983 (E)         17.04.1990       17.04.2010
Switzerland        536275 (E)         25.06.1991       25.06.2011
Switzerland        538395 (E)         25.06.1991       25.06.2011
USA                 08/344519        19.04.1986*
USA                 08/317283        19.04.1985*
USA                 07/960925        20.04.1988*
USA                  5262319          25.06.1990       16.11.2010
USA                 08/071223        25.06.1990*
USA                 07/992479        21.09.1992*
USA                 08/210232        21.09.1992*
USA                 08/115519        21.09.1992*
USA                 08/118197        19.04.1985*
USA                 08/294061        19.04.1985*
</TABLE>

* Effective filing date





                                      -19-
<PAGE>   21
                                   SCHEDULE 2
                               LIST OF CG PATENTS

<TABLE>
<CAPTION>
COUNTRY      APPLICATION/PATENT NO.   FILING DATE      EXPIRY DATE
<S>             <C>                   <C>              <C>
Australia           67018/90          27.11.1990       27.11.2006
Austria            433225 (E)         27.11.1990       27.11.2010
Belgium            433225 (E)         27.11.1990       27.11.2010
Canada               2031430          04.12.1990       04.12.2010
Denmark            433225 (E)         27.11.1990       27.11.2010
Finland              905956           03.12.1990       03.12.2010
France             433225 (E)         27.11.1990       27.11.2010
Germany            433225 (E)         27.11.1990       27.11.2010
Great Britain      433225 (E)         27.11.1990       27.11.2010
Greece             433225 (E)         27.11.1990       27.11.2010
Hungary             8084/1990         05.12.1990       05.12.2010
Ireland              4386/90          05.12.1990       05.12.2010
Israel                96549           05.12.1990       05.12.2010
Italy              433225 (E)         27.11.1990       27.11.2010
Japan               330871/90         30.11.1990
Korea               19881/90          05.12.1990
Luxembourg         433225 (E)         27.11.1990       27.11.2010
Mexico                23579           04.12.1990       04.12.2010
Netherlands        433225 (E)         27.11.1990       27.11.2010
New Zealand          236333           04.12.1990       04.12.1990
Norway               P905264          05.12.1990       05.12.2010
Pakistan             132484           10.11.1990       06.12.2005
Philippines           41681           05.12.1990
Philippines           47025           05.12.1991
Philippines           48001           05.12.1990
Portugal              96068           04.12.1990
South Africa         9762/90          05.12.1990       05.12.2010
Spain              433225 (E)         27.11.1990       27.11.2010
Sweden             433225 (E)         27.11.1990       27.11.2010
Switzerland        433225 (E)         27.11.1990       27.11.2010
Taiwan               56999NI          13.11.1990       11.06.2007
USA                 621502/07         03.12.1990
USA             960309/07 (Cont.)     13.10.1992
USA                 201703/08         25.02.1994
</TABLE>





                                      -20-
<PAGE>   22
                                   SCHEDULE 3
                          LIST OF THIRD PARTY PATENTS

                                    LICENSOR

     (1)  The Board of Trustees of the Leland Stanford Junior University

          PATENT NO.                              DATE OF ISSUE/FILING
          US Patent No. 4,237,224                 2nd December, 1980
          US Patent No. 4,468,464                 28th August, 1984
          US Patent Application No. 602,294       20th April, 1984

     (2)  Brookhaven National Laboratory

          PATENT NO.                              DATE OF ISSUE/FILING
          US Patent No. 4,952,496                 28th August, 1990





                                      -21-
<PAGE>   23
                                   SCHEDULE 4

            Example of calculation for the purposes of Clause 3.5(c)

                   (N.B.: All figures used are hypothetical)


CIBA-GEIGY supplies three batches of Compound to ONCOGENE SCIENCE in 1996.  The
Manufacturing Cost ("MC") of the first batch of 10 grams is SFr. 125/mg (total
cost SFr. 1,250,000); the MC of the second batch of 12 grams is SFr.  75/mg
(total cost SFr. 900,000); the MC of the third batch of 16 grams is also SFr.
75/mg (cost SFr. 1,200,000).  The average MC per gram of Compound is SFr.
3,350,000 divided by 38 = SFr. 88,157.9. ONCOGENE SCIENCE's Net Sales of
Product during 1996 total SFr. 60,000,000.  The total amount of Compound
contained in the Product sold in 1996 is 24 grams and therefore the average Net
Sales Value per active gram of Product is SFr. 2,500,000.  The MC is only
3.526316% of the Net Sales Value of Product, i.e. less than 4% by 0.473684.
Therefore ONCOGENE SCIENCE pays to CIBA-GEIGY one half of 0.473684% of SFr.
60,000,000 = SFr. 142,105.2.





                                      -22-
<PAGE>   24
                                   SCHEDULE 5

                  STOCK SUBSCRIPTION AND PURCHASE AGREEMENT



                                                                19th April, 1995





The Board of Directors of
Oncogene Science, Inc.


Dear Sirs:

          The undersigned, Ciba-Geigy Limited ("the Purchaser") hereby
subscribes for and purchases 909,091 shares ("the Shares") of Common Stock,
$.01 par value per share, of Oncogene Science, Inc., a Delaware corporation
("the Company"), for a total consideration of U.S. $5,000,000.50 in cash, such
consideration to be paid and the Shares to be issued to the Purchaser within 10
business days of the date hereof.

          Certain of the capitalised terms used herein are defined in the
Collaborative Agreement between the Purchaser and the Company dated as of the
19th April, 1995.

          The Purchaser hereby agrees, represents, and warrants to the Company
that.

          (1)  The Purchaser is acquiring the Shares for its own account (and
not for the account of others) for investment and not with a view to the
distribution or resale thereof,

          (2)  By virtue of its position, the Purchaser has access to the same
kind of information which would be available in a registration statement filed
under the Securities Act of 1933;

          (3)  The Purchaser is a sophisticated investor;

          (4)  The Purchaser shall have the registration rights set forth in
the Registration Rights Agreement between the Purchaser and the Company dated
as of the 19th April, 1995.  The Purchaser agrees that if any of the Shares are
sold prior to the 19th April, 1999 without the written consent of the Company,
the option set forth in Section 5.8 of the Collaborative Agreement to include
all other indications for the Compound in the Licensed Indications shall lapse.
If at the time of the sale of the Shares such option has already been
exercised, then such other indications shall thereupon be removed from the
Licensed Indications.





                                      -23-
<PAGE>   25
          (5)  The Purchaser understands that it may not sell or otherwise
dispose of such shares in the absence of either a registration statement under
the Securities Act of 1933 or an exemption from the registration provisions of
the Securities Act of 1933; and

          (6)  The certificates representing the Shares may contain a legend to
the effect of (5) above, and the Company may place stop-transfer orders with
the transfer agent of the Company's securities with respect to the Shares in
the event of any sale or disposal, or purported sale or disposal, of the Shares
contrary to (5) above .

          This Stock Subscription and Purchase Agreement shall be binding upon
the successors and assigns of the undersigned, and may not be amended or
modified except by any agreement in writing signed by the parties hereto.  This
Stock Subscription and Purchase Agreement shall be governed by the laws of the
State of New York, without regard to principles of conflicts of laws.

                               Yours faithfully,
                               CIBA-GEIGY Limited





Accepted:

ONCOGENE SCIENCE, INC.


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





                                      -24-

<PAGE>   1
                                                                   EXHIBIT 10.28

                               CIBA-GEIGY LIMITED
                               BASLE, SWITZERLAND



                                                     The Board of Directors of
                                                     Oncogene Science, Inc.
                                                     106 Charles Lindbergh Blvd.
                                                     Uniondale, NY  11553-3649
                                                     USA

                                                     April 19, 1995

Dear Sirs:

         The undersigned, Ciba-Geigy Limited ("the Purchaser") hereby
subscribes for and purchases 909,091 shares ("the Shares") of Common Stock,
$.01 par value per share, of Oncogene Science, Inc., a Delaware corporation
("the Company"), for a total consideration of U.S. $5,000,000.50 in cash, such
consideration to be paid and the Shares to be issued to the Purchaser within 10
business days of the date hereof.

         Certain of the capitalized terms used herein are defined in the
Collaborative Agreement between the Purchaser and the Company dated as of the
19th April, 1995.

         The Purchaser hereby agrees, represents and warrants to the Company
that:

         (1)     The Purchaser is acquiring the Shares for its own account (and
not for the account of others) for investment and not with a view to the
distribution or resale thereof;

         (2)     By virtue of its position, the Purchaser has access to the
same kind of information which would be available in a registration statement
filed under the Securities Act of 1933;

         (3)     The Purchaser is a sophisticated investor;

         (4)     The Purchaser shall have the registration rights set forth in
the Registration Rights Agreement between the Purchaser and the Company dated
as of the 19th April, 1995.  The Purchaser agrees that if any of the Shares are
sold prior to the 19th April, 1999 without the written consent of the Company,
the option set forth in Section 5.8 of the Collaborative Agreement to include
all other indications for the Compound in the Licensed Indications shall lapse.
If at the time of the sale of the Shares such option has already been
exercised, then such other indications shall thereupon be removed from the
Licensed Indications.

         (5)     The Purchaser understands that it may not sell or otherwise
dispose of such shares in the absence of either a registration statement under
the Securities Act of 1933 or an exemption from the registration provisions of
the Securities Act of 1933; and
<PAGE>   2
The Board of Directors of
Oncogene Science, Inc.
April 19, 1995
Page 2




         (6)     The certificates representing the Shares may contain a legend
to the effect of (5) above, and the Company may place stop-transfer orders with
the transfer agent of the Company's securities with respect to the Shares in
the event of any sale or disposal, or purported sale or disposal, of the Shares
contrary to (5) above.

         This Stock Subscription and Purchase Agreement shall be binding upon
the successors and assigns of the undersigned, and may not be amended or
modified except by any agreement in writing signed by the parties hereto.  This
Stock Subscription and Purchase Agreement shall be governed by the laws of the
State of New York, without regard to principles of conflicts of laws.

                                               Yours faithfully,

                                               CIBA-GEIGY Limited



                      /s/ M. Sundman                            /s/ R.E. Walker
                      Head of Business Development              Division Counsel


Accepted:

ONCOGENE SCIENCE, INC.



By:  /s/ Gary E. Frashier           
     -------------------------------
Name:    Gary E. Frashier
Title:   Chief Executive Officer





                                      -2-

<PAGE>   1
                                                                   EXHIBIT 10.29


                         REGISTRATION RIGHTS AGREEMENT


Agreement dated as of April 19, 1995, between CIBA-GEIGY LIMITED of
Klybeckstrasse 141, 4002 Basel Switzerland (the "Holder") and ONCOGENE SCIENCE,
INC. of 106 Charles Lindbergh Boulevard, Uniondale, New York 11553-3649, USA
(the "Company")

WHEREAS, Holder is a holder of the common stock, par value $.01 per share, of
the Company ("Common Stock");

WHEREAS, Holder desires to have certain registration rights under the
securities laws, and the Company desires that Holder have such registration
rights;

NOW, THEREFORE, in consideration of the mutual agreements contained herein and
other good and valuable consideration, the parties hereby agree as follows:

      1.    At such time as the Company shall determine to file any
registration statement, or any post-effective amendment to a registration
statement, under the Securities Act of 1933 (the "Act"), covering equity
securities of the Company (other than registration statements on Form S-8 or
S-4 or any other form not generally available for the registration of
securities for sale to the public) for its own account or for the account of
others, the Company shall advise Holder, by written notice at least 14 business
days prior to any filing, and shall, upon the request of the Holder, and at the
expense of the Company, include in any such
<PAGE>   2
registration statement, or any such post-effective amendment to a registration
statement, all of the Registrable Securities (as hereinafter defined) that
Holder has requested in writing to be registered, provided that such written
request is delivered to the Company within 10 business days of the Holder's
receipt of notice from the Company.  As used in this Agreement, Registrable
Securities shall mean (i) the Common Stock purchased or owned by the Holder,
and (ii) any Common Stock of the Company issued as (or issuable upon the
conversion or exercise of any convertible security, options, warrant right or
other security which is issued as) a dividend or other distribution with
respect to, or in exchange for or in replacement of such Common Stock.  All
costs and expenses of such registration statement shall be borne by the
Company, except underwriting discounts or commissions applicable to any of the
Registrable Securities sold by the Holder.  The Company shall not be required
to register securities of the Holder on more than two occasions; provided that
if the Holder has been prevented from selling all of the Common Stock it wished
to sell because of limitations imposed under paragraph (c) of this Section 1,
then the Holder shall be entitled to include such Common Stock in one or more
additional registration statements under the terms of this Section 1 until the
Holder has been able to sell all of the Common Stock it wished to sell.

            (a)   The Company shall supply prospectuses and such other
documents as Holder may reasonably request in order to facilitate the public
sale or other disposition of the Registrable Securities, use its best efforts
to register and qualify any of the Registrable Securities for sale in such
reasonable number of states as Holder designates and do any and all other acts
and things which may be necessary or desirable to enable Holder to





                                      -2-
<PAGE>   3
consummate the public sale or other disposition of the Registrable Securities
subject to the rights of others with similar rights.  The Company agrees to
maintain such registration statement or post-effective amendment with respect
to the Registrable Securities current under the Act as to the Registrable
Securities for a period of at least six months, and an additional three months
upon written request of Holder.

            (b)   The Company shall also furnish indemnification in the manner
provided in Section 2 hereof, except that the maximum amount of such
indemnification shall be limited to the net amount of proceeds received by
Holder from the sale of the Registrable Securities.  Holder shall furnish
information and indemnification as set forth in Section 2 hereof, except that
the maximum amount which may be recovered from Holder shall be limited to the
net amount of proceeds received by Holder from the sale of the Registrable
Securities.

            (c)   In connection with any offering involving an underwriting of
shares of the Company's Common Stock, the Company shall not be required under
Section 1 hereof to include any of the Holder's securities in such underwriting
unless they accept the terms of the underwriting as agreed upon between the
Company and the underwriters selected by it (or by other persons entitled to
select the underwriters), and then only in such quantity as the underwriters
determine in their sole discretion will not jeopardize the success of the
offering by the Company.  If the total amount of securities, including
Registrable Securities, requested by stockholders to be included in such
offering exceeds the amount of securities sold other than by the Company that
the underwriters determine in their sole discretion is compatible





                                      -3-
<PAGE>   4
with the success of the offering, then the Company shall be required to include
in the offering only that number of such securities, including Registrable
Securities, which the underwriters determine in their sole discretion will not
jeopardize the success of the offering (the securities so included to be
apportioned pro rata, subject to prior existing rights, among the selling
stockholders according to the total amount of securities entitled to be
included therein owned by each selling stockholder or in such other proportions
as shall mutually be agreed to by such selling stockholders).

      2.    (a)   Whenever pursuant to Section 1, a registration statement
relating to any of the Registrable Securities is filed under the Act, amended
or supplemented, the Company shall, to the extent permitted by law, indemnify
and hold harmless Holder, and each person, if any, who controls (within the
meaning of the Act) Holder, and each underwriter (within the meaning of the
Act) of such securities and each person, if any, who controls (within the
meaning of the Act) any such underwriter, against such losses, claims, damages,
liabilities or actions, joint or several, to which Holder, any such controlling
person or any such underwriter may become subject, under the Act or otherwise,
insofar as such losses, claims, damages, liabilities or actions in respect
thereof, arise out of or are based upon any untrue statement or alleged untrue
statement of any material fact contained in any such registration statement or
any preliminary prospectus or final prospectus constituting a part thereof or
any amendment or supplement thereto, or arise out of or are based upon the
omission to state therein a material fact required to be stated therein or
necessary to make the statements therein not misleading, and shall reimburse
Holder and each such controlling person and





                                      -4-
<PAGE>   5
underwriter for any legal or other expenses reasonably incurred by Holder or
such controlling person or underwriter in connection with investigating or
defending any such losses, claims, damages, liabilities or actions; provided,
however, that the Company will not be liable in any such case to the extent
that any such losses, claims, damages, liabilities or actions arise out of or
are based upon an untrue statement or alleged untrue statement or omission or
alleged omission made in said registration statement, said preliminary
prospectus, said final prospectus or said amendment or supplement in reliance
upon and in conformity with written information furnished by Holder or any
other underwriter, for use in the preparation thereof.

            (b)   Holder shall indemnify and hold harmless the Company, each of
its directors, each of its officers and each person, if any, who controls the
Company within the meaning of the Act against any losses, claims, damages,
liabilities or actions, to which the Company or any such director, officer or
controlling person may become subject, under the Act or otherwise, insofar as
such losses, claims, damages, liabilities or actions arise out of or are based
upon any untrue or alleged untrue statement of any preliminary prospectus, said
final prospectus, or said amendment or supplement, or arise out of or are based
upon the omission or the alleged omission to state therein a material fact
required to be stated therein or necessary to make the statement therein not
misleading in each case to the extent, but only to the extent, that such untrue
statement or alleged untrue statement or omission or alleged omission was made
in said registration statement, said preliminary prospectus, said final
prospectus or said amendment or supplement in reliance upon and in conformity
with written information furnished by Holder for use in the preparation
thereof; and shall reimburse the





                                      -5-
<PAGE>   6
Company or any such director, officer or controlling person for any legal or
other expenses reasonably incurred by them in connection with investigating or
defending any such losses, claims, damages, liabilities or actions.

            (c)   Promptly after receipt by an indemnified party under this
Section 2 of notice of the commencement of any action, such indemnified party
shall, if a claim in respect thereof is to be made against any indemnifying
party, give the indemnifying party notice of the commencement thereof; but the
omission to so notify the indemnifying party shall not relieve it from any
liability which it may have to an indemnified party otherwise than under this
Section 2.

            (d)   In case any such action is brought against any indemnified
party, and it notifies an indemnifying party of the commencement thereof, the
indemnifying party shall be entitled to participate in, and, to the extent that
it may wish, jointly with any other indemnifying party similarly notified, to
assume the defense thereof, with counsel reasonably satisfactory to such
indemnified party, and after notice from the indemnifying party to such
indemnified party, the indemnifying party shall not be liable to such
indemnified party under this Section 2 for any legal or other expenses
subsequently incurred by such indemnified party in connection with the defense
thereof, other than reasonable costs of investigation.

            (e)   To the extent any indemnification by an indemnifying party is
prohibited or limited by law, the indemnifying party agrees to make the maximum





                                      -6-
<PAGE>   7
contribution with respect to any amounts for which it would otherwise be liable
under this Section 2 to the extent permitted by law, provided that (i) no
contribution shall be made under circumstances where the indemnifying party
would not have been liable for indemnification under the fault standards set
forth in this Section 2, (ii) no seller of Registrable Securities guilty of
fraudulent misrepresentation (within the meaning of Section 11(f) of the Act)
shall be entitled to contribution from any seller of Registrable Securities who
was not guilty of such fraudulent misrepresentation and (iii) contribution by
Holder shall be limited in amount to the net amount of proceeds received by him
from the sale of the Registrable Securities.

      3.    The provisions of Section 12. of the Agreement between the Company
and the Holder dated the date hereof shall be applicable to this agreement as
if fully set forth herein.





                                      -7-
<PAGE>   8
      IN WITNESS WHEREOF, the parties hereto have duly executed this Agreement
as of the date first above written.

ONCOGENE SCIENCE, INC.


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

Title:
      ----------------------------


CIBA-GEIGY LIMITED


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

Title:
      ----------------------------              -----------------------------





                                      -8-

<PAGE>   1
                                                                      EXHIBIT 21



                          Subsidiaries of the Company



Applied bioTechnology, Inc.

Oncogene Science S.A.

<PAGE>   1
                                                                      EXHIBIT 23





                         Independent Auditors' Consent


The Board of Directors
Oncogene Science, Inc.:


We consent to incorporation by reference in the registration statements on
Forms S-8 (No. 33-60182, No. 2-03148 and No. 33-64713) of Oncogene Science,
Inc. of our reports dated December 1, 1995, relating to the consolidated
balance sheets of Oncogene Science, Inc. and subsidiaries as of September 30,
1995 and 1994, and the related consolidated statements of operations,
stockholders' equity and cash flows for each of the years in the three-year
period ended September 30, 1995, which reports appear in the September 30, 1995
annual report on Form 10-K of Oncogene Science, Inc.




                                                           KPMG PEAT MARWICK LLP


Jericho, New York
December 12, 1995






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<ARTICLE> 5
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          SEP-30-1995
<PERIOD-START>                             OCT-01-1994
<PERIOD-END>                               SEP-30-1995
<CASH>                                      17,919,609
<SECURITIES>                                 8,866,957
<RECEIVABLES>                                1,320,015
<ALLOWANCES>                                  (37,974)
<INVENTORY>                                          0
<CURRENT-ASSETS>                            29,103,524
<PP&E>                                      12,576,523
<DEPRECIATION>                             (6,867,008)
<TOTAL-ASSETS>                              44,057,421
<CURRENT-LIABILITIES>                        2,975,743
<BONDS>                                              0
                                0
                                          0
<COMMON>                                       176,830
<OTHER-SE>                                  40,549,636
<TOTAL-LIABILITY-AND-EQUITY>                44,057,421
<SALES>                                      4,286,540
<TOTAL-REVENUES>                            15,864,999
<CGS>                                        1,252,990
<TOTAL-COSTS>                               23,612,802
<OTHER-EXPENSES>                                66,086
<LOSS-PROVISION>                                24,112
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                            (4,258,670)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                                  0
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                               (4,258,670)
<EPS-PRIMARY>                                   (0.25)
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