<Page>

                                     BY-LAWS

                                       OF

                               ABBOTT LABORATORIES


                        Adopted by the Board of Directors
                          of Abbott Laboratories at the
                         Annual Meeting, April 11, 1963
                as amended and restated, effective March 15, 2002

<Page>

                         BY-LAWS OF ABBOTT LABORATORIES

                                    ARTICLE I

                                     OFFICES

     The principal office of the Corporation in the State of Illinois shall be
located at the intersection of State Routes 43 and 137 in the County of Lake.
The Corporation may have such other offices either within or without the State
of Illinois as the business of the Corporation may require from time to time.

     The registered office of the Corporation may be, but need not be, identical
with the principal office in the State of Illinois. The address of the
registered office may be changed from time to time by the Board of Directors.

                                   ARTICLE II

                                  SHAREHOLDERS

     SECTION 1. ANNUAL MEETING; TRANSACTION OF BUSINESS, NOMINATION OF
DIRECTORS. The annual meeting of the shareholders shall be held in the month of
April in each year on such date and at such time as the Board of Directors shall
provide. The meeting shall be held for the purpose of electing Directors and for
the transaction of such other business as is properly brought before the meeting
in accordance with these By-Laws. If the election of Directors shall not be held
on the day designated for any annual meeting, or at any adjournment thereof, the
Board of Directors shall cause the election to be held at a meeting of the
shareholders as soon thereafter as conveniently may be.

     To be properly brought before the meeting, business must be either (a)
specified in the notice of meeting (or any supplement thereto) given by or at
the direction of the Board of Directors, (b) otherwise properly brought before
the meeting by or at the direction of the Board of Directors or (c) otherwise
properly brought before the meeting by a shareholder. In addition to any other
applicable requirements, for business to be properly brought before an annual
meeting by a shareholder, the shareholder must have given timely notice thereof
in writing to the Secretary. To be timely, a shareholder's notice must be
delivered to or mailed and received at the principal office of the Corporation,
not earlier than October 1 nor later than the first business day of January
immediately prior to the date of the meeting; PROVIDED, HOWEVER, that in the
event that the date of such meeting is not in the month of April and less than
sixty-five days' notice or prior public disclosure of the date of the meeting is
given or made to shareholders, notice by the shareholder to be timely must be so
received not later than the close of business on the fifteenth day following the
day on which such notice of the date of the annual meeting was mailed or such
public disclosure was made, whichever first occurs. A shareholder's notice to
the Secretary shall set forth as to each matter the shareholder proposes to
bring before the annual meeting (i) a brief description of the business desired
to be brought before the annual meeting and the reasons for

<Page>
BY-LAWS
                                                                          Page 2


conducting such business at the annual meeting, (ii) the name and record address
of the shareholder proposing such business, (iii) the class and number of shares
of the Corporation which are beneficially owned by the shareholder and (iv) any
material interest of the shareholder in such business.

     Notwithstanding anything in these By-Laws to the contrary, no business
shall be conducted at the annual meeting except in accordance with the
procedures set forth in this Section 1, PROVIDED, HOWEVER, that nothing in this
Section 1 shall be deemed to preclude discussion by any shareholder of any
business properly brought before the annual meeting.

     The Chairman of an annual meeting shall, if the facts warrant, determine
and declare to the meeting that business was not properly brought before the
meeting in accordance with the provisions of this Section 1, and if he should so
determine, he shall so declare to the meeting and such business not properly
brought before the meeting shall not be transacted.

     Only persons who are nominated in accordance with the following procedures
shall be eligible for election as directors. Nominations of persons for election
to the Board of Directors of the Corporation at the annual meeting may be made
at such annual meeting of shareholders by or at the direction of the Board of
Directors, by any nominating committee or person appointed by the Board of
Directors, or by any shareholder of the Corporation entitled to vote for the
election of directors at such meeting who complies with the notice procedures
set forth in this Section 1. Such nominations, other than those made by or at
the direction of the Board of Directors or by a committee or person appointed by
the Board of Directors, shall be made pursuant to timely notice in writing to
the Secretary. To be timely, a shareholder's notice shall be delivered to or
mailed and received at the principal office of the Corporation not earlier than
October 1 nor later than the first business day of January immediately prior to
the date of the meeting; PROVIDED, HOWEVER, that in the event that the date of
such meeting is not in the month of April and less than sixty-five days' notice
or prior public disclosure of the date of the meeting is given or made to
shareholders, notice by the shareholder to be timely must be so received not
later than the close of business on the fifteenth day following the day on which
such notice of the date of the meeting was mailed or such public disclosure was
made, whichever first occurs. Such shareholder's notice to the Secretary shall
set forth: (a) as to each person whom the shareholder proposes to nominate for
election or re-election as a director, (i) the name, age, business address and
residence address of the person, (ii) the principal occupation or employment of
the person, (iii) the class and number of shares of capital stock of the
Corporation which are beneficially owned by the person and (iv) any other
information relating to the person that is required to be disclosed in
solicitations for proxies for election of directors pursuant to Regulation 14A
under the Securities Exchange Act of 1934, as amended; and (b) as to the
shareholder giving the notice, (i) the name and record address of such
shareholder and (ii) the class and number of shares of the Corporation which are
beneficially owned by such shareholder. The Corporation may require any proposed
nominee to furnish such other information as may reasonably be required by the
Corporation to determine the eligibility of such proposed nominee to serve as
director of the Corporation. No person shall be eligible for election as a
director of the Corporation unless nominated in accordance with the procedures
set forth herein.

<Page>
BY-LAWS
                                                                          Page 3


     The Chairman of the meeting shall, if the facts warrant, determine and
declare to the meeting that a nomination was not made in accordance with the
foregoing procedure, and if he should so determine, he shall so declare to the
meeting and the defective nomination shall be disregarded.

     SECTION 2. SPECIAL MEETINGS. Special meetings of the shareholders may be
called by the Chairman of the Board, the Chief Executive Officer, the President,
the Board of Directors or by the holders of not less than one-fifth of all the
outstanding shares entitled to vote on the matter for which the meeting is
called.

     SECTION 3. PLACE OF MEETING. The Board of Directors may designate any
place, either within or without the State of Illinois, as the place of meeting
for any annual meeting or for any special meeting called by the Board of
Directors. If no designation is made, or if a special meeting be otherwise
called, the place of meeting shall be the principal office of the Corporation in
the State of Illinois.

     SECTION 4. NOTICE OF MEETINGS. Written notice stating the place, day and
hour of the meeting and, in the case of a special meeting, the purpose or
purposes for which the meeting is called, shall be delivered not less than ten
nor more than sixty days before the date of the meeting, or in the cases of a
merger, consolidation, share exchange, dissolution or sale, lease or exchange of
assets not less than twenty nor more than sixty days before the meeting, either
personally or by mail, by or at the direction of the Chairman of the Board, the
Chief Executive Officer, the President, or the Secretary or the persons calling
the meeting, to each shareholder of record entitled to vote at such meeting. If
mailed, such notice shall be deemed to be delivered when deposited in the United
States mail, addressed to the shareholder at his or her address as it appears on
the records of the Corporation, with postage thereon prepaid.

     SECTION 5. FIXING RECORD DATE. For the purpose of determining shareholders
entitled to notice of or to vote at any meeting of shareholders, or shareholders
entitled to receive payment of any dividend, or in order to make a determination
of shareholders for any other proper purpose, the Board of Directors of the
Corporation may fix in advance a date as the record date for any such
determination of shareholders, such date in any case to be not more than sixty
days and, for a meeting of shareholders, not less than ten days, or in the case
of a merger, consolidation, share exchange, dissolution or sale, lease or
exchange of assets not less than twenty days, immediately preceding such
meeting.

     SECTION 6. VOTING LISTS. The Secretary shall make, or cause to have made,
within twenty days after the record date for a meeting of shareholders or ten
days before such meeting, whichever is earlier, a complete list of the
shareholders entitled to vote at such meeting, arranged in alphabetical order,
with the address of and the number of shares held by each, which list, for a
period of ten days prior to such meeting, shall be kept on file at the
registered office of the Corporation and shall be subject to inspection by any
shareholder and to copying at the shareholder's expense, at any time during
usual business hours. Such list shall also be produced and kept open at the time
and place of the meeting and shall be subject to the inspection of any
shareholder during the whole time of the meeting. The original share ledger or
transfer book, or

<Page>
BY-LAWS
                                                                          Page 4


a duplicate thereof kept in this State, shall be prima facie evidence as to who
are the shareholders entitled to examine such list or share ledger or transfer
book or to vote at any meeting of shareholders.

     SECTION 7. QUORUM. A majority of the outstanding shares of the Corporation
entitled to vote on a matter, represented in person or by proxy, shall
constitute a quorum for consideration of such matter at a meeting of
shareholders. If a quorum is present, the affirmative vote of the majority of
the shares represented at the meeting and entitled to vote on a matter shall be
the act of the shareholders, unless the vote of a greater number or voting by
classes is required by The Business Corporation Act of 1983 or the Articles of
Incorporation, as in effect on the date of such determination. If a quorum is
not present, a majority of the shares of the Corporation entitled to vote on a
matter and represented in person or by proxy at such meeting may adjourn the
meeting from time to time without further notice.

     SECTION 8. PROXIES. A shareholder may appoint a proxy to vote or
otherwise act for the shareholder by delivering a valid appointment to the
person so appointed or such person's agent; PROVIDED, HOWEVER, no shareholder
may name more than two persons as proxies to attend and to vote the
shareholder's shares at any meeting of shareholders. Without limiting the
manner in which a shareholder may appoint such a proxy pursuant to these
By-Laws, the following shall constitute valid means by which a shareholder
may make such an appointment:

     (a)  A shareholder may sign a proxy appointment form. The shareholder's
          signature may be affixed by any reasonable means, including, but not
          limited to, by facsimile signature.

     (b)  A shareholder may transmit or authorize the transmission of a
          telegram, cablegram, or other means of electronic transmission;
          provided that any such transmission must either set forth or be
          submitted with information from which it can be determined that the
          telegram, cablegram, or other electronic transmission was authorized
          by the shareholder. If it is determined that the telegram, cablegram,
          or other electronic transmission is valid, the inspectors or, if there
          are no inspectors, such other persons making that determination shall
          specify the information upon which they relied.

No proxy shall be valid after the expiration of eleven months from the date
thereof unless otherwise provided in the proxy. Each proxy continues in full
force and effect until revoked by the person appointing the proxy prior to the
vote pursuant thereto, except as otherwise provided by law. Such revocation may
be effected by a writing delivered to the secretary of the Corporation stating
that the proxy is revoked or by a subsequent delivery of a valid proxy by, or by
the attendance at the meeting and voting in person by the person appointing the
proxy. The dates of the proxy shall presumptively determine the order of
appointment.

     SECTION 9. VOTING OF SHARES. Each outstanding share, regardless of class,
shall be entitled to one vote in each matter submitted to a vote at a meeting of
shareholders and, in all elections for Directors, every shareholder shall have
the right to vote the number of shares owned

<Page>
BY-LAWS
                                                                          Page 5


by such shareholder for as many persons as there are Directors to be elected, or
to cumulate such votes and give one candidate as many votes as shall equal the
number of Directors multiplied by the number of such shares or to distribute
such cumulative votes in any proportion among any number of candidates; provided
that, vacancies on the Board of Directors may be filled as provided in Section
9, Article III of these By-Laws. A shareholder may vote either in person or by
proxy.

     SECTION 10. VOTING OF SHARES BY CERTAIN HOLDERS. Shares of this Corporation
held by the Corporation in a fiduciary capacity may be voted and shall be
counted in determining the total number of outstanding shares entitled to vote
at any given time.

     Shares registered in the name of another corporation, domestic or foreign,
may be voted by any officer, agent, proxy or other legal representative
authorized to vote such shares under the law of incorporation of such
corporation.

     Shares registered in the name of a deceased person, a minor ward or a
person under legal disability may be voted by his or her administrator,
executor, or court appointed guardian, either in person or by proxy without a
transfer of such shares into the name of such administrator, executor, or court
appointed guardian. Shares registered in the name of a trustee may be voted by
him or her, either in person or by proxy.

     Shares registered in the name of a receiver may be voted by such receiver,
and shares held by or under the control of a receiver may be voted by such
receiver without the transfer thereof into his or her name if authority so to do
is contained in an appropriate order of the court by which such receiver was
appointed.

     A shareholder whose shares are pledged shall be entitled to vote such
shares until the shares have been transferred into the name of the pledgee, and
thereafter the pledgee shall be entitled to vote the shares so transferred.

     SECTION 11. VOTING BY BALLOT. Voting on any question or in any election may
be viva voce unless the presiding officer shall order that voting be by ballot.

     SECTION 12. INSPECTORS OF ELECTION. The Board of Directors in advance of
any meeting of shareholders may appoint inspectors to act at such meeting or any
adjournment thereof. If inspectors of election are not so appointed, the officer
or person acting as chairman at any such meeting may, and on the request of any
shareholder or his proxy, shall make such appointment. In case any person
appointed as inspector shall fail to appear or to act, the vacancy may be filled
by appointment made by the Board of Directors in advance of the meeting or at
the meeting by the officer or person acting as chairman.

     Such inspectors shall ascertain and report the number of shares represented
at the meeting, based upon their determination of the validity and effect of
proxies; count all votes and report the results; and do such other acts as are
proper to conduct the election and voting with impartiality and fairness to all
the shareholders.

<Page>
BY-LAWS
                                                                          Page 6


     Each report of an inspector shall be in writing and signed by him or her or
by a majority of them if there be more than one inspector acting at such
meeting. If there is more than one inspector, the report of a majority shall be
the report of the inspectors. The report of the inspector or inspectors on the
number of shares represented at the meeting and the results of the voting shall
be prima facie evidence thereof.

                                   ARTICLE III

                                    DIRECTORS

     SECTION 1. GENERAL POWERS. The business and affairs of the Corporation
shall be managed under the direction of the Board of Directors.

     SECTION 2. NUMBER, TENURE AND QUALIFICATIONS. The number of Directors of
the Corporation shall be fourteen. The terms of all Directors shall expire at
the next annual meeting of shareholders following their election. Despite the
expiration of a Director's term, he or she shall continue to serve until the
next meeting of shareholders at which Directors are elected. Directors need not
be residents of Illinois or shareholders of the Corporation.

     SECTION 3. REGULAR MEETINGS. A regular annual meeting of the Board of
Directors shall be held without other notice than this By-Law, immediately
after, and at the same place as, the annual meeting of shareholders. Other
regular meetings of the Board of Directors shall be held at the principal office
of the Corporation on the second Friday of every month at 9:00 a.m. without
other notice than this By-Law. The Board of Directors may provide, by
resolution, for the holding of the regular monthly meetings at a different time
and place, either within or without the State of Illinois, or for the omission
of the regular monthly meeting altogether. Where the Board of Directors has, by
resolution, changed or omitted regular meetings, no other notice than such
resolution shall be given.

     SECTION 4. SPECIAL MEETINGS. Special meetings of the Board of Directors may
be called by or at the request of the Chairman of the Board, the Chairman of the
Executive Committee, the Chief Executive Officer, the President, or of any four
Directors. The persons authorized to call special meetings of the Board of
Directors may fix any place, either within or without the State of Illinois, as
the place for holding any special meeting of the Board of Directors.

     SECTION 5. NOTICE. Notice of any special meeting shall be given: (i) at
least one day prior thereto if the notice is given personally or by an
electronic transmission, (ii) at least two business days prior thereto if the
notice is given by having it delivered by a third party entity that provides
delivery services in the ordinary course of business and guarantees delivery of
the notice to the Director no later than the following business day, and (iii)
at least seven days prior thereto if the notice is given by mail. For this
purpose, the term "electronic transmission" may include, but shall not be
limited to, a telex, facsimile, or other electronic means. Notice shall be
delivered to the Director's business address and/or telephone number and shall
be deemed given upon electronic transmission, upon delivery to the third party
delivery service, or upon being deposited

<Page>
BY-LAWS
                                                                          Page 7


in the United States mail with postage thereon prepaid. Any Director may waive
notice of any meeting by signing a written waiver of notice either before or
after the meeting. Attendance of a Director at any meeting shall constitute a
waiver of notice of such meeting, except where a Director attends a meeting for
the express purpose of objecting to the transaction of any business because the
meeting is not lawfully called or convened. Neither the business to be
transacted at, nor the purpose of, any regular or special meeting of the Board
of Directors need to be specified in the notice or waiver of notice of such
meeting.

     SECTION 6. QUORUM. A majority of the number of Directors fixed by these
By-Laws shall constitute a quorum for transaction of business at any meeting of
the Board of Directors; provided, that if less than a majority of such number of
Directors are present at said meeting, a majority of the Directors present may
adjourn the meeting from time to time without further notice.

     SECTION 7. MANNER OF VOTING. The act of the majority of the Directors
present at a meeting at which a quorum is present shall be the act of the Board
of Directors.

     SECTION 8. INFORMAL ACTION BY DIRECTORS. Any action required to be taken at
a meeting of the Board of Directors, or any other action which may be taken at a
meeting of the Board of Directors or a committee thereof, may be taken without a
meeting if a consent in writing, setting forth the action so taken, shall be
signed by all of the Directors entitled to vote with respect to the subject
matter thereof, or by all the members of such committee, as the case may be.

     The consent shall be evidenced by one or more written approvals, each of
which sets forth the action taken and bears the signature of one or more
Directors. All the approvals evidencing the consent shall be delivered to the
Secretary of the Corporation to be filed in the corporate records. The action
taken shall be effective when all the Directors have approved the consent unless
the consent specifies a different effective date.

     Any such consent signed by all the Directors or all the members of a
committee shall have the same effect as a unanimous vote.

     SECTION 9. VACANCIES. Any vacancy occurring in the Board of Directors and
any directorship to be filled by reason of an increase in the number of
Directors, may be filled by election at an annual meeting or at a special
meeting of shareholders called for that purpose. A Director elected to fill a
vacancy shall serve until the next annual meeting of shareholders. A majority of
Directors then in office may also fill one or more vacancies arising between
meetings of shareholders by reason of an increase in the number of Directors or
otherwise, and any Director so selected shall serve until the next annual
meeting of shareholders, provided that at no time may the number of Directors
selected to fill vacancies in this manner during any interim period between
meetings of shareholders exceed 33-1/3 per cent of the total membership of the
Board of Directors.

<Page>
BY-LAWS
                                                                          Page 8


     SECTION 10. PRESUMPTION OF ASSENT. A Director of the Corporation who is
present at a meeting of the Board of Directors or any committee thereof at which
action on any corporate matter is taken is conclusively presumed to have
assented to the action taken unless his or her dissent is entered in the minutes
of the meeting or unless he or she files his or her written dissent to such
action with the person acting as the secretary of the meeting before the
adjournment thereof or forwards such dissent by registered or certified mail to
the Secretary of the Corporation immediately after the adjournment of the
meeting. Such right to dissent shall not apply to a Director who voted in favor
of such action.

     SECTION 11. APPOINTMENT OF AUDITORS. Upon the recommendation of the Audit
Committee, the Board of Directors shall appoint annually a firm of independent
public accountants as auditors of the Corporation. Should the Board of Directors
for any reason determine that such appointment be terminated, the Board of
Directors shall appoint another firm of independent public accountants to act as
auditors of the Corporation.

                                   ARTICLE IV

                                   COMMITTEES

     SECTION 1. APPOINTMENT. A majority of the Board of Directors may create one
or more committees and appoint members of the Board to serve on the committee or
committees. Each committee shall have three or more members, who serve at the
pleasure of the Board. The Board shall designate one member of each committee to
be chairman of the committee. The Board shall designate a secretary of each
committee who may be, but need not be, a member of the committee or the Board.

     SECTION 2. COMMITTEE MEETINGS. A majority of any committee shall constitute
a quorum and a majority of the committee is necessary for committee action. A
committee may act by unanimous consent in writing without a meeting. Committee
meetings may be called by the Chairman of the Board, the chairman of the
committee, or any two of the committee's members. The time and place of
committee meetings shall be designated in the notice of such meeting. Notice of
each committee meeting shall be given to each committee member. Each Committee
shall keep minutes of its proceedings and such minutes shall be distributed to
the Board of Directors.

     SECTION 3. EXECUTIVE COMMITTEE. The Board shall appoint an Executive
Committee. A majority of the members of the Committee shall be selected from
those Directors who are not then serving as full-time employees of the
Corporation or any of its subsidiaries.

<Page>
BY-LAWS
                                                                          Page 9


     SECTION 4. DUTIES OF THE EXECUTIVE COMMITTEE. The Executive Committee may,
when the Board of Directors is not in session, exercise the authority of the
Board in the management of the business and affairs of the Corporation;
provided, however, the Committee may not:

          (1)  authorize distributions;

          (2)  approve or recommend to shareholders any act the Business
               Corporation Act of 1983 requires to be approved by shareholders;

          (3)  fill vacancies on the Board or on any of its committees;

          (4)  elect or remove Officers or fix the compensation of any member of
               the Committee;

          (5)  adopt, amend or repeal the By-Laws;

          (6)  approve a plan of merger not requiring shareholder approval;

          (7)  authorize or approve reacquisition of shares, except according to
               a general formula or method prescribed by the Board;

          (8)  authorize or approve the issuance or sale, or contract for sale,
               of shares or determine the designation and relative rights,
               preferences, and limitations of a series of shares, except that
               the Board may direct the Committee to fix the specific terms of
               the issuance or sale or contract for sale or the number of shares
               to be allocated to particular employees under an employee benefit
               plan; or

          (9)  amend, alter, repeal, or take action inconsistent with any
               resolution or action of the Board of Directors when the
               resolution or action of the Board of Directors provides by its
               terms that it shall not be amended, altered or repealed by action
               of the Committee.

     SECTION 5. AUDIT COMMITTEE. The Board of Directors shall appoint an Audit
Committee. All of the members of the Committee shall be selected from those
Directors who are not then serving as full-time employees of the Corporation or
any of its subsidiaries.

     SECTION 6. DUTIES OF THE AUDIT COMMITTEE. The Audit Committee shall:

          (1)  recommend to the Board of Directors annually a firm of
               independent public accountants to act as auditors of the
               Corporation;

          (2)  review with the auditors in advance the scope of and fees for
               their annual audit;

<Page>
BY-LAWS
                                                                         Page 10


          (3)  review with the auditors and the management, from time to time,
               the Corporation's accounting principles, policies, and practices
               and its reporting policies and practices;

          (4)  review with the auditors annually the results of their audit; and

          (5)  review from time to time with the auditors and the Corporation's
               financial personnel the adequacy of the Corporation's accounting,
               financial and operating controls.

     SECTION 7. COMPENSATION COMMITTEE. The Board of Directors shall appoint a
Compensation Committee. The members of the Committee shall be selected from
those Directors who are not then serving as full-time employees of the
Corporation or any of its subsidiaries and who are "non-employee directors"
under Rule 16b-3 promulgated under the Securities Exchange Act of 1934, or any
similar successor rule.

     SECTION 8. DUTIES OF THE COMPENSATION COMMITTEE. The Compensation Committee
shall:

          (1)  administer the stock option plans of the Corporation;

          (2)  review, at least annually, the compensation of Directors who are
               not then serving as full-time employees of the Corporation or any
               of its subsidiaries and recommend for approval by the Board any
               change in the compensation of such Directors;

          (3)  review, at least annually, the compensation of all Officers of
               the Corporation. The committee shall have the authority to
               approve changes in the base compensation, and any proposed
               special separation arrangements of Officers, except the Chairman
               of the Board of Directors, the Chief Executive Officer, and the
               President, whose base compensation, and any special separation
               arrangements, shall be subject to approval by the Board of
               Directors.

     SECTION 9. NOMINATIONS AND BOARD AFFAIRS COMMITTEE. The Board of Directors
shall appoint a Nominations and Board Affairs Committee. A majority of the
members of the Committee shall be selected from those Directors who are not then
serving as full-time employees of the Corporation or any of its subsidiaries.

     SECTION 10. DUTIES OF THE NOMINATIONS AND BOARD AFFAIRS COMMITTEE. The
Nominations and Board Affairs Committee shall:

          (1)  develop general criteria for selection of and qualifications
               desirable in members of the Board of Directors and Officers of
               the Corporation and aid

<Page>
BY-LAWS
                                                                         Page 11


               the Board in identifying and attracting qualified candidates to
               stand for election to such positions;

          (2)  recommend to the Board annually a slate of nominees to be
               proposed by the Board to the shareholders as nominees for
               election as Directors, and, from time to time, recommend persons
               to fill any vacancy on the Board;

          (3)  review annually, or more often if appropriate, the performance of
               individual members of the management of the Corporation and the
               membership and performance of committees of the Board and make
               recommendations deemed necessary or appropriate to the Board;

          (4)  recommend to the Board persons to be elected as Officers of the
               Corporation; and

          (5)  serve in an advisory capacity to the Board of Directors and
               Chairman of the Board on matters of organization, management
               succession plans, major changes in the organizational structure
               of the Corporation, and the conduct of Board activities,
               including assisting in the evaluation of the Board's own
               performance.

     SECTION 11. PUBLIC POLICY COMMITTEE. The Board of Directors shall appoint a
Public Policy Committee. A majority of the members of the Committee shall be
selected from those Directors who are not then serving as full time employees of
the Corporation or any of its subsidiaries.

     SECTION 12. DUTIES OF THE PUBLIC POLICY COMMITTEE. The Public Policy
Committee shall have an advisory role with respect to public policy, regulatory
and government affairs issues that affect the Corporation.

                                    ARTICLE V

                                    OFFICERS

     SECTION 1. NUMBER. The Officers of the Corporation shall be the Chairman of
the Board, the Chief Executive Officer, one or more Presidents, one or more
Executive, Group or Senior Vice Presidents, one or more Vice Presidents, a
Treasurer, a Secretary, a Controller, a General Counsel and such Assistant
Treasurers and Assistant Secretaries as the Board of Directors may elect or the
Chairman of the Board may appoint. Any two offices may be held by the same
person.

     SECTION 2. ELECTION AND TERM OF OFFICE. The Board of Directors may elect
any Officer. The Chairman of the Board may appoint any Vice President, a
Controller, a Treasurer, a Secretary and any Assistant Treasurers and Assistant
Secretaries.

<Page>
BY-LAWS
                                                                         Page 12


     The Officers of the Corporation shall be elected or appointed annually.
Each year, the Board of Directors shall elect Officers at the first meeting of
the Board of Directors held after the annual meeting of shareholders. If the
Board of Directors does not elect Officers at such meeting, such election shall
be held as soon thereafter as conveniently may be. Each year, immediately
following the election of Officers by the Board of Directors or as soon
thereafter as conveniently may be, the Chairman of the Board shall appoint such
additional Officers within the scope of the Chairman's authority as the Chairman
deems necessary or appropriate.

     Vacancies or new offices may be filled at any time as set forth in Section
4 of this Article V.

     Each Officer shall hold office until his or her successor shall have been
duly elected or appointed and shall have qualified or until his or her death or
until he or she shall resign or shall have been removed in the manner
hereinafter provided.

     SECTION 3. REMOVAL OF OFFICERS. Any Officer may be removed by the Board of
Directors whenever in its judgment the best interests of the Corporation will be
served thereby. Any Officer appointed by the Chairman of the Board may be
removed by the Chairman whenever, in the Chairman's judgment, the best interests
of the Corporation will be served thereby.

     SECTION 4. VACANCIES. A vacancy in any office because of death,
resignation, removal, disqualification or otherwise, may be filled by the Board
of Directors for the unexpired portion of the term. A vacancy in any office
appointed by the Chairman of the Board may be filled by the Chairman of the
Board for the unexpired portion of the term.

     SECTION 5. CHAIRMAN OF THE BOARD OF DIRECTORS AND CHIEF EXECUTIVE OFFICER.
The Chairman shall preside at all meetings of the Board of Directors and the
shareholders. The Chief Executive Officer shall be responsible for the overall
management of the Corporation subject to the direction of the Board of
Directors.

     SECTION 6. PRESIDENT. Each President shall be the Chief Operating Officer
of a major area of the Corporation's activities and shall perform such duties as
may be prescribed by the Board of Directors or the Chief Executive Officer.

     SECTION 7. EXECUTIVE, GROUP AND SENIOR VICE PRESIDENTS. Each Executive,
Group, or Senior Vice President shall be responsible for supervising and
coordinating a major area of the Corporation's activities subject to the
direction of the Chief Executive Officer or a President.

     SECTION 8. VICE PRESIDENTS. Each of the Vice Presidents shall be
responsible for those activities designated by an Executive, Group, or Senior
Vice President, a President, the Chief Executive Officer, or the Board of
Directors.

<Page>
BY-LAWS
                                                                         Page 13


     SECTION 9. TREASURER. The Treasurer shall administer the investment,
financing, insurance and credit activities of the Corporation.

     SECTION 10. SECRETARY. The Secretary will be the custodian of the corporate
records and of the seal of the Corporation, will countersign certificates for
shares of the Corporation, and in general will perform all duties incident to
the office of the Secretary. The Secretary shall have the authority to certify
the By-Laws, resolutions of the shareholders and the Board of Directors and
committees thereof, and other documents of the Corporation as true and correct
copies hereof.

     SECTION 11. CONTROLLER. The Controller will conduct the accounting
activities of the Corporation, including the maintenance of the Corporation's
general and supporting ledgers and books of account, operating budgets, and the
preparation and consolidation of financial statements.

     SECTION 12. GENERAL COUNSEL. The General Counsel will be the chief
consultant of the Corporation on legal matters. He or she will supervise all
matters of legal import concerning the interests of the Corporation.

     SECTION 13. ASSISTANT TREASURER. The Assistant Treasurer shall, in the
absence or incapacity of the Treasurer, perform the duties and exercise the
powers of the Treasurer, and shall perform such other duties as shall from time
to time be given to him or her by the Treasurer.

     SECTION 14. ASSISTANT SECRETARY. The Assistant Secretary shall, in the
absence or incapacity of the Secretary, perform the duties and exercise the
powers of the Secretary, and shall perform such other duties as shall from time
to time be given to him or her by the Secretary. The Assistant Secretary shall
be, with the Secretary, keeper of the books, records, and the seal of the
Corporation, and shall have the authority to certify the By-Laws, resolutions
and other documents of the Corporation.

     SECTION 15. GENERAL POWERS OF OFFICERS. The Chairman of the Board, the
Chief Executive Officer, any President, and any Executive, Group or Senior Vice
President, may sign without countersignature any deeds, mortgages, bonds,
contracts, reports to public agencies, or other instruments whether or not the
Board of Directors has expressly authorized execution of such instruments,
except in cases where the signing and execution thereof shall be expressly
delegated by the Board of Directors or by these By-Laws solely to some other
Officer or agent of the Corporation, or shall be required by law to be otherwise
signed or executed. Any other Officer of this Corporation may sign contracts,
reports to public agencies, or other instruments which are in the regular course
of business and within the scope of his or her authority, except where signing
and execution thereof shall be expressly delegated by the Board of Directors or
by these By-Laws to some other Officer or agent of the Corporation, or shall be
required by law to be otherwise signed or executed.

<Page>
BY-LAWS
                                                                         Page 14


                                   ARTICLE VI

                   CERTIFICATES FOR SHARES AND THEIR TRANSFER

     SECTION 1. CERTIFICATES FOR SHARES. Certificates representing shares of the
Corporation shall be in such form as may be determined by the Board of
Directors. Such certificates shall be signed by any one of the Chairman of the
Board, the Chief Executive Officer, the President or an Executive Vice
President, and shall be countersigned by the Secretary or an Assistant Secretary
and shall be sealed with the seal, or a facsimile of the seal, of the
Corporation. If a certificate is countersigned by a Transfer Agent or Registrar,
other than the Corporation itself or its employee, any other signatures or
countersignature on the certificate may be facsimiles. In case any Officer of
the Corporation, or any officer or employee of the Transfer Agent or Registrar
who has signed or whose facsimile signature has been placed upon such
certificate ceases to be an Officer of the Corporation, or an officer or
employee of the Transfer Agent or Registrar before such certificate is issued,
the certificate may be issued by the Corporation with the same effect as if the
Officer of the Corporation, or the officer or employee of the Transfer Agent or
Registrar had not ceased to be such at the date of its issue. Each certificate
representing shares shall state: that the Corporation is organized under the
laws of the State of Illinois; the name of the person to whom issued; the number
and class of shares; and the designation of the series, if any, which such
certificate represents. Each certificate shall be consecutively numbered or
otherwise identified. The name of the person to whom the shares represented
thereby are issued, with the number of shares and date of issue, shall be
entered on the books of the Corporation. All certificates surrendered to the
Corporation for transfer shall be canceled, and no new certificate shall be
issued in replacement until the former certificate for a like number of shares
shall have been surrendered and canceled, except in the case of lost, destroyed
or mutilated certificates.

     SECTION 2. TRANSFER AGENT AND REGISTRAR. The Board of Directors may from
time to time appoint such Transfer Agents and Registrars in such locations as it
shall determine, and may, in its discretion, appoint a single entity to act in
the capacity of both Transfer Agent and Registrar in any one location.

     SECTION 3. TRANSFER OF SHARES. Transfers of shares of the Corporation shall
be made only on the books of the Corporation at the request of the holder of
record thereof or of his attorney, lawfully constituted in writing, and on
surrender for cancellation of the certificate for such shares. The person in
whose name shares stand on the books of the Corporation shall be deemed the
owner thereof for all purposes as regards the Corporation.

     SECTION 4. LOST, DESTROYED OR MUTILATED CERTIFICATES. In case of lost,
destroyed or mutilated certificates, duplicate certificates shall be issued to
the person claiming the loss, destruction or mutilation, provided:

     (a)  That the claimant furnishes an affidavit stating the facts of such
          loss, destruction or mutilation so far as known to him or her and
          further stating that the affidavit is

<Page>
BY-LAWS
                                                                         Page 15


          made to induce the Corporation to issue a duplicate certificate or
          certificates; and that issuance of the duplicate certificate or
          certificates is approved:

          (i)  in a case involving a certificate or certificates for more than
               1,000 shares, by the Chairman of the Board, the Chief Executive
               Officer, the President, an Executive Vice President, or the
               Secretary; or

          (ii) in a case involving a certificate or certificates for 1,000
               shares or less, by the Transfer Agent appointed by the Board of
               Directors for the transfer of the shares represented by such
               certificate or certificates;

          upon receipt of a bond, with one or more sureties, in the amount to be
          determined by the party giving such approval; or

     (b)  that issuance of the said duplicate certificate or certificates is
          approved by the Board of Directors upon such terms and conditions as
          it shall determine.

                                   ARTICLE VII

                                   FISCAL YEAR

     The fiscal year of the Corporation shall begin on the first day of January
in each year and end on the last day of December in each year.

                                  ARTICLE VIII

                VOTING SHARES OR INTERESTS IN OTHER CORPORATIONS

     The Chairman of the Board, the Chief Executive Officer, the President, an
Executive, Group, or Senior Vice President and each of them, shall have the
authority to act for the Corporation by voting any shares or exercising any
other interest owned by the Corporation in any other corporation or other
business association, including wholly or partially owned subsidiaries of the
Corporation, such authority to include, but not be limited to, power to attend
any meeting of any such corporation or other business association, to vote
shares in the election of directors and upon any other matter coming before any
such meeting, to waive notice of any such meeting and to consent to the holding
thereof without notice, and to appoint a proxy or proxies to represent the
Corporation at any such meeting with all the powers that the said Officer would
have under this section if personally present.

<Page>
BY-LAWS
                                                                         Page 16


                                   ARTICLE IX

                          DISTRIBUTIONS TO SHAREHOLDERS

     The Board of Directors may authorize, and the Corporation may make,
distributions to its shareholders, subject to any restriction in the Articles of
Incorporation and subject also to the limitations prescribed by law.

                                    ARTICLE X

                                      SEAL

     The Corporate Seal of the Corporation shall be in the form of a circle in
the center of which is the insignia "[CORPORATE SEAL]" and shall have inscribed
thereon the name of the Corporation and the words "an Illinois Corporation."

                                   ARTICLE XI

                                WAIVER OF NOTICE

     Whenever any notice whatever is required to be given under the provisions
of these By-Laws or under the provisions of the Articles of Incorporation or
under the provisions of The Business Corporation Act of 1983, a waiver thereof
in writing, signed by the person or persons entitled to such notice, whether
before or after the time stated therein, shall be deemed equivalent to the
giving of such notice. Attendance at any meeting shall constitute waiver of
notice thereof unless the person at the meeting objects to the holding of the
meeting because proper notice was not given.

                                   ARTICLE XII

                                   AMENDMENTS

     These By-Laws may be made, altered, amended or repealed by the shareholders
or the Board of Directors.