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
   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
   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
   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
   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
   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
   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
   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
   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
   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
   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
   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
   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