EPIX MEDICAL INC
S-8, 1997-07-01
IN VITRO & IN VIVO DIAGNOSTIC SUBSTANCES
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      As filed with the Securities and Exchange Commission on July 1, 1997

                                                   REGISTRATION NO. 333_______


                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D. C. 20549

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

                                    FORM S-8

                          REGISTRATION STATEMENT UNDER
                           THE SECURITIES ACT OF 1933

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

                               EPIX MEDICAL, INC.
             (Exact name of registrant as specified in its charter)

           Delaware                                            04-3030815
       (State or other                                      (I.R.S. Employer
jurisdiction of incorporation)                             Identification No.)

                71 Rogers Street, Cambridge, Massachusetts 02142
              (Address of registrant's principal executive offices)

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

                         1996 DIRECTOR STOCK OPTION PLAN
                            (Full Title of the Plan)


             MICHAEL D. WEBB, PRESIDENT AND CHIEF EXECUTIVE OFFICER
                               EPIX Medical, Inc.
                                71 Rogers Street
                         Cambridge, Massachusetts 02142
                                 (617) 499-1400
            (Name, address and telephone number of agent for service)

                                 with copies to:

                           WILLIAM T. WHELAN, ESQUIRE
                               Palmer & Dodge LLP
                                One Beacon Street
                           Boston, Massachusetts 02108
                                 (617) 573-0100

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

                         CALCULATION OF REGISTRATION FEE
<TABLE>
<CAPTION>
- ----------------------------------------------------------------------------------------------------------------------
Title of each class of securities      Amount to be       Proposed maximum      Proposed maximum        Amount of
         to be registered               registered       offering price per    aggregate offering   registration fee
                                                                share                price
- ----------------------------------------------------------------------------------------------------------------------
<S>                                    <C>                   <C>                 <C>                     <C>
Common Stock, $0.01 par value          66,666 shares         $8.00(1)               $533,328(1)          $162.00
- ----------------------------------------------------------------------------------------------------------------------
</TABLE>

(1) Estimated solely for the purpose of determining the registration fee and
    computed pursuant to Rule 457(h) based upon the average of the high and low
    sale prices on June 27, 1997 as reported by the Nasdaq National Market.

<PAGE>

                                     PART II
               INFORMATION REQUIRED IN THE REGISTRATION STATEMENT


Item 3.  Incorporation of Documents by Reference.

         The following documents filed with the Securities and Exchange
    Commission (the "Commission") are incorporated herein by reference:

         (a) The Registrant's Annual Report on Form 10-K for the fiscal year
    ended December 31, 1996 (File No. 000-21863) filed with the Commission on
    March 27, 1997.

         (b) All other reports of the Registrant filed pursuant to Section 13(a)
or 15(d) of the Securities Exchange Act of 1934, as amended (the "Exchange
Act"), since the end of the fiscal year covered by the Annual Report referred to
in (a) above.

         (c) The description of the Registrant's Common Stock contained in its
Registration Statement on Form 8-A (File No. 0-21863) filed with the Commission
on December 10, 1996, including any amendment or report filed hereafter for the
purpose of updating such description.

         All documents filed after the date of this Registration Statement by
the Registrant pursuant to Section 13(a), 13(c), 14 and 15(d) of the Exchange
Act and prior to the filing of a post-effective amendment that indicates that
all shares of Common Stock offered hereunder have been sold or which deregisters
all shares of Common Stock remaining unsold shall be deemed to be incorporated
by reference herein and to be a part hereof from the date of the filing of such
reports and documents.


Item 4.  Description of Securities.

         Not applicable.

Item 5.  Interests of Named Experts and Counsel.

         The validity of the Common Stock offered hereby will be passed upon for
the Registrant by Palmer & Dodge LLP, Boston, Massachusetts. William T. Whelan,
a partner of Palmer & Dodge LLP, is Assistant Secretary of the Registrant.

Item 6. Indemnification of Directors and Officers.

         Section 145 of the Delaware General Corporation Law permits the
Registrant to indemnify directors, officers, employees and agents of the
Registrant against actual and reasonable expenses (including attorneys' fees)
incurred by them in connection with any action, suit or proceeding brought
against them by reason of their status or service as a director, officer,
employee or agent by or on behalf of the Registrant, and against expenses
(including attorneys' fees), judgments, fines and settlements actually and
reasonably incurred by him in connection with any such action, suit or
proceeding, if (i) he acted in good faith and in a manner he reasonably believed
to be in or not opposed to the best interests of the Registrant and (ii) in the
case of a criminal proceeding, he had no reasonable cause to believe his conduct
was unlawful. Except as ordered by a court, no indemnification shall be made in
connection with

                                     - 2 -
<PAGE>

any proceeding brought by or in the right of the corporation where the person
involved is adjudged to be liable to the Registrant.

         Article NINTH of the Registrant's Restated Certificate of Incorporation
provides that a director shall not be personally liable to the Registrant or its
stockholders for monetary damages for breach of fiduciary duty as a director,
except to the extent that elimination or limitation of liability is not
permitted under the Delaware General Corporation Law as in effect when such
liability is determined.

         Article TENTH of the Registrant's Restated Certificate of Incorporation
provides that the Registrant shall, to the fullest extent permitted by the
General Corporation Law of the State of Delaware, as amended from time to time,
indemnify each 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, by reason of the fact that he
is or was, or has agreed to become a director or officer of the Registrant, or
is or was serving, or has agreed to serve at the request of the Registrant as a
director, officer or trustee of, or in a similar capacity with, another
corporation, partnership, joint venture, trust or other enterprise. The
indemnification provided for in Article TENTH is expressly not exclusive of any
other rights to which those seeking indemnification may be entitled under any
law, agreement or vote of stockholders or disinterested directors or otherwise,
and shall inure to the benefit of the heirs, executors and administrators of
such persons. Article TENTH further permits the Board of Directors to authorize
the grant of indemnification rights to other employees and agents of the
Registrant and such rights may be equivalent to, or greater or less than, those
set forth in Article TENTH.

         Article V, Section 2 of the Registrant's By-Laws provides that the
Registrant shall have the power to purchase and maintain insurance on behalf of
any person who is or was a director, officer, employee or agent of the
Registrant, or is or was serving at the request of the Registrant as a director,
officer, employee or agent of another corporation, partnership, joint venture,
trust or other enterprise against any liability asserted against such person and
incurred by such person in any such capacity or arising out of such person's
status as such.

         The Registrant maintains insurance for directors and officers and has
entered into agreements with certain officers and directors affirming the
Registrant's obligation to indemnify them to the fullest extent permitted by law
and providing various other protections.


Item 7. Exemption from Registration Claimed.

         Not applicable.

                                     - 3 -
<PAGE>

Item 8. Exhibits.

Exhibit
Number                           Description
- ------                           -----------
4.1   Restated Certificate of Incorporation of the Registrant. Filed herewith.

4.2   Amended and Restated By-laws of the Registrant. Filed herewith.

5.1   Opinion of Palmer & Dodge LLP as to the legality of the securities
      registered hereunder. Filed herewith.

23.1  Consent of Ernst & Young LLP, independent auditors.  Filed herewith.

23.2  Consent of Palmer & Dodge LLP. Contained in Opinion of Palmer & Dodge LLP,
      filed as Exhibit 5.1 hereto.

24.1  Power of Attorney. Set forth on the signature page to this Registration
      Statement.

24.2  Certified resolution of the Board of Directors authorizing Power of
      Attorney. Filed herewith.


Item 9.  Undertakings.

         (a)      The undersigned Registrant hereby undertakes:

                  (1) To file, during any period in which offers or sales are
being made, a post-effective amendment to this registration statement:

                      (i) To include any prospectus required by Section 10(a)(3)
of the Securities Act of 1933;

                      (ii) To reflect in the prospectus any facts or events
arising after the effective date of this Registration Statement (or the most
recent post-effective amendment thereof) which, individually or in the
aggregate, represents a fundamental change in the information set forth in this
Registration Statement;

                      (iii) To include any material information with respect to
the plan of distribution not previously disclosed in this Registration Statement
or any material change to such information in this Registration Statement;

provided, however, that paragraphs (a)(1)(i) and (a)(1)(ii) do not apply if the
information required to be included in a post-effective amendment by those
paragraphs is contained in periodic reports filed by the Registrant pursuant to
Section 13 or Section 15(d) of the Securities Exchange Act of 1934 that are
incorporated by reference in this Registration Statement.

                  (2) That, for the purpose of determining any liability under
the Securities Act of 1933, each such post-effective amendment shall be deemed
to be a new registration statement relating to the securities offered therein,
and the offering of such securities at that time shall be deemed to be the
initial bona fide offering thereof.


                                      -4-
<PAGE>

                  (3) To remove from registration by means of a post-effective
amendment any of the securities being registered which remain unsold at the
termination of the offering.

         (b) The undersigned Registrant hereby undertakes that, for purposes of
determining any liability under the Securities Act of 1933, each filing of the
Registrant's annual report pursuant to Section 13(a) or Section 15(d) of the
Securities Exchange Act of 1934 that is incorporated by reference in this
Registration Statement shall be deemed to be a new registration statement
relating to the securities offered therein, and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof.

         (c) Insofar as indemnification for liabilities arising under the
Securities Act of 1933 may be permitted to directors, officers and controlling
persons of the Registrant pursuant to the provisions referred to in Item 6
hereof, or otherwise, the Registrant has been advised that in the opinion of the
Securities and Exchange Commission such indemnification is against public policy
as expressed in the Act and is, therefore, unenforceable. In the event that a
claim for indemnification against such liabilities (other than the payment by
the Registrant of expenses incurred or paid by a director, officer or
controlling person of the registrant in the successful defense of any action,
suit or proceeding) is asserted by such director, officer or controlling person
in connection with the securities being registered, the Registrant will, unless
in the opinion of its counsel the matter has been settled by controlling
precedent, submit to a court of appropriate jurisdiction the question whether
such indemnification by it is against public policy as expressed in the Act and
will be governed by the final adjudication of such issue.


                                      -5-
<PAGE>


                                   SIGNATURES

         Pursuant to the requirements of the Securities Act of 1933, the
Registrant certifies that it has reasonable grounds to believe that it meets all
of the requirements for filing on Form S-8 and has duly caused this Registration
Statement to be signed on its behalf by the undersigned, thereunto duly
authorized, in the City of Cambridge, State of Massachusetts, on this 30th day
of June, 1997.

                               EPIX MEDICAL, INC.

                               By: /s/ Michael D. Webb
                                   -----------------------------------------
                                       Michael D. Webb
                                       President and Chief Executive Officer


                                POWER OF ATTORNEY

         We, the undersigned officers and directors of EPIX Medical, Inc. hereby
severally constitute and appoint Michael D. Webb, Jeffrey R. Lentz and William
T. Whelan and each of them singly, our true and lawful attorneys-in-fact, with
full power to them in any and all capacities, to sign any and all amendments to
this Registration Statement on Form S-8 including any post-effective amendments
thereto, and to file the same, with exhibits thereto and other documents in
connection therewith, with the Securities and Exchange Commission, hereby
ratifying and confirming all that each of said attorneys-in-fact may do or cause
to be done by virtue hereof.

         Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed below by the following persons in the
capacities and on the dates indicated:

         Signature                 Title                             Date


/s/ Michael D. Webb                President, Chief Executive    June 30, 1997
- ---------------------------------- Officer and Director
    Michael D. Webb                (Principal Executive
                                   Officer)


/s/ Jeffrey R. Lentz               Chief Financial Officer and   June 30, 1997
- ---------------------------------- Vice President, Finance and
    Jeffrey R. Lentz               Administration (Principal
                                   Financial Officer and
                                   Principal Accounting Officer)


/s/ Christopher F.O. Gabrieli      Chairman of the Board         June 30, 1997
- ---------------------------------- and Director
    Christopher F.O. Gabrieli



                                      -6-
<PAGE>

/s/ Stanley T. Crooke, M.D., Ph.D. Director                      June 30, 1997
- ----------------------------------
    Stanley T. Crooke, M.D., Ph.D.


/s/ Luke B. Evnin, Ph.D.           Director                      June 30, 1997
- ----------------------------------
    Luke B. Evnin, Ph.D.


/s/ Randall B. Lauffer, Ph.D.      Director                      June 30, 1997
- ----------------------------------
    Randall B. Lauffer, Ph.D.

                                      -7-

<PAGE>



                                  EXHIBIT INDEX


Exhibit
Number                         Description
- ------                         -----------
 4.1      Restated Certificate of Incorporation of the Registrant.
          Filed herewith.

 4.2      Amended and Restated By-laws of the Registrant.  Filed
          herewith.

 5.1      Opinion of Palmer & Dodge LLP as to the legality of the
          securities registered hereunder.  Filed herewith.

23.1      Consent of Ernst & Young LLP, independent auditors.  Filed
          herewith.

23.2      Consent of Palmer & Dodge LLP.  Contained in Opinion of Palmer
          & Dodge LLP, filed as Exhibit 5.1 hereto.

24.1      Power of Attorney.  Set forth on the signature page to this
          Registration Statement.

24.2      Certified resolution of the Board of Directors authorizing
          Power of Attorney.  Filed herewith.

                                      -8-


                                                                     EXHIBIT 4.1


                      RESTATED CERTIFICATE OF INCORPORATION

                                       OF

                               EPIX MEDICAL, INC.


   The undersigned, Michael D. Webb and William T. Whelan, do hereby certify:

         A. They are the duly elected and acting President and Assistant
Secretary, respectively, of EPIX Medical, Inc., a Delaware corporation (the
"Corporation").

         B. The original Certificate of Incorporation of the Corporation was
filed with the Secretary of State on November 28, 1988, and the name under which
the Corporation was originally incorporated is Metacorp, Inc.

         C. The Certificate of Incorporation, as previously amended and
restated, is further amended and restated to read in full as follows:

         FIRST. The name of the Corporation is EPIX Medical, Inc.

         SECOND. The address of the registered office of the Corporation in the
state of Delaware is at 1013 Centre Road, Wilmington, County of New Castle,
Delaware 19805-1297. The name of its registered agent at such address is The
Prentice-Hall Corporation System, Inc.

         THIRD. The purpose of the Corporation is to engage in any lawful act or
activity for which corporations may be organized under the General Corporation
Law of the State of Delaware.

         FOURTH: The total number of shares of all classes of stock which the
Corporation shall have authority to issue is 16,000,000, consisting of: (i)
15,000,000 shares of Common Stock, $.01 par value per share ("Common Stock"),
and (ii) 1,000,000 shares of Preferred Stock, $.01 par value per share
("Preferred Stock").

         The following is a statement of the designations and the powers,
privileges and rights, and the qualifications, limitations or restrictions
thereof in respect of each class of capital stock of the Corporation.

A.       PREFERRED STOCK

         The Board of Directors is authorized, subject to limitations prescribed
by law and the provisions of this Article FOURTH, to provide by resolution for
the issuance of the shares of Preferred Stock in one or more series, and by
filing a certificate pursuant to the applicable law of the State of Delaware, to
establish from time to time the number of shares to be included in each such
series, and to fix the designations, powers, preferences and rights of the
shares of each such series and any qualifications, limitations or restrictions
thereof.

         The authority of the Board with respect to each series shall include,
but shall not be limited to, determination of the following:

                                     - 9 -
<PAGE>

         (a) The number of shares constituting that series and the distinctive
designation of that series;

         (b) The dividend rate, if any, on the shares of that series, whether
dividends shall be cumulative, and if so, from which date or dates, and the
relative rights of priority, if any, of payment of dividends on shares of the
series;

         (c) Whether that series shall have voting rights, in addition to the
voting rights provided by law, and, if so, the terms of such voting rights;

         (d) Whether that series shall have conversion privileges, and, if so,
the terms and conditions of such conversion, including provision for adjustment
of the conversion rate in such events as the Board of Directors shall determine;

         (e) Whether or not the shares of that series shall be redeemable, and
if so, the terms and conditions of such redemption, including the date or dates
upon or after which they shall be redeemable, and the amount per share payable
in case of redemption, which amount may vary under different conditions and at
different redemption dates;

         (f) Whether that series shall have a sinking fund for the redemption or
purchase of shares of that series, and if so, the terms and amount of such
sinking fund;

         (g) The rights of the shares of that series in the event of voluntary
or involuntary liquidation, dissolution or winding up of the Corporation, and
the relative rights of priority, if any, of payment of shares of that series;
and

         (h) Any other relative rights, preferences and limitations of that
series.

B.       COMMON STOCK

         The Common Stock is subject to the rights and preferences of the
Preferred Stock as hereinbefore set forth or authorized.

         Subject to the provisions of any applicable law or of the By-laws of
the Corporation, as from time to time amended, with respect to the fixing of a
record date for the determination of stockholders entitled to vote, and except
as otherwise provided herein or by law or by the resolution or resolutions
providing for the issue of any series of Preferred Stock, the holders of
outstanding shares of Common Stock shall have exclusive voting rights for the
election of directors and for all other purposes, each holder of record of
shares of Common Stock being entitled to one vote for each share of Common Stock
standing in his name on the books of the Corporation.

         Subject to the rights of any one or more series of Preferred Stock, the
holders of Common Stock shall be entitled to receive such dividends from time to
time as may be declared by the Board of Directors out of any funds of the
Corporation legally available for the payment of such dividends.

         In the event of the liquidation, dissolution, or winding up of the
Corporation, whether voluntary or involuntary, after payment shall have been
made to the holders of the Preferred Stock the full amount to which they are
entitled, the holders of Common Stock shall be entitled to share ratably
according to the number of shares of Common Stock held by them, in all remaining
assets of the Corporation available for distribution to its stockholders.

                                     - 10 -
<PAGE>

C.       ISSUANCE

         Subject to the provisions of this Restated Certificate of Incorporation
and except as otherwise provided by law, the shares of stock of the Corporation,
regardless of class, may be issued for such consideration and for such corporate
purposes as the Board of Directors may from time to time determine.

         FIFTH:   The Corporation is to have perpetual existence.

         SIXTH.  The Board of  Directors  shall  consist  of not less than three
directors, the exact number to be determined from time to time by resolution
adopted by the affirmative vote of a majority of the directors then in office.
The directors shall be divided into three classes, as nearly equal in number as
the then total number of directors constituting the entire Board of Directors
permits, with the term of office of one class expiring each year. The initial
directors of the first class shall be elected to hold office for a term expiring
at the next succeeding annual meeting, the initial directors of the second class
shall be elected to hold office for a term expiring at the second succeeding
annual meeting and the initial directors of the third class shall be elected to
hold office for a term expiring at the third succeeding annual meeting. At each
succeeding annual meeting of stockholders beginning in the first year following
the election of such staggered Board of Directors, successors to the class of
directors whose term expires at that meeting shall be elected for a three-year
term. If the number of directors is changed, any increase or decrease shall be
apportioned among the classes so as to maintain the number of directors in each
class as nearly equal as possible, and any additional directors of any class
elected to fill a vacancy resulting from an increase in the size of such class
shall hold office for a term that shall coincide with the remaining term of that
class, but in no event will a decrease in the number of directors shorten the
term of any incumbent director. Any vacancies in the Board of Directors for any
reason, and any directorships resulting from any increase in the number of
directors, may be filled by the Board of Directors, acting by a majority of the
directors then in office, although less than a quorum, and any directors so
chosen shall hold office until the next election of the class for which such
directors shall have been chosen. Notwithstanding the foregoing, and except as
otherwise required by law, whenever the holders of any one or more series of
Preferred Stock shall have the right, voting separately as a class, to elect one
or more directors of the Corporation, the election, term of office and other
features of such directorships shall be governed by the terms of this Restated
Certificate of Incorporation and certificates of designation applicable thereto,
and such directors so elected shall not be divided into classes pursuant to this
Article SIXTH unless expressly provided by such terms. Subject to the foregoing,
at each annual meeting of stockholders the successors to the class of directors
whose terms shall then expire shall be elected to hold office for a term
expiring at the annual meeting for the year in which their term expires and
until their successors shall be elected and qualified, subject to prior death,
resignation, retirement or removal.

         Except as otherwise determined by the Board of Directors in
establishing a series of Preferred Stock as to directors elected by holders of
such series, at any special meeting of the stockholders called at least in part
for the purpose, any director or directors may, by the affirmative vote of the
holders of at least a majority of the stock entitled to vote for the election of
directors, be removed from office for cause. The provisions of this subsection
shall be the exclusive method for the removal of directors. This Article SIXTH
may not be amended, revised or revoked, in whole or in part, except by the
affirmative vote of the holders of 66-2/3% of the voting power of the shares of
all


                                     - 11 -
<PAGE>

classes of stock of the Corporation entitled to vote for the election of
directors, considered for the purposes of this Article SIXTH as one class of
stock.

         SEVENTH: The Board of Directors shall have the right to make, alter or
repeal the By-laws of the Corporation.

         EIGHTH: Elections of directors need not be by written ballot unless the
By-laws of the Corporation shall so provide.

         NINTH. A director shall not be personally liable to the Corporation or
its stockholders for monetary damages for breach of fiduciary duty as a
director, except to the extent that the elimination or limitation of liability
is not permitted under the General Corporation Law of the State of Delaware as
in effect when such liability is determined. No amendment or repeal of this
provision shall deprive a director of the benefits hereof with respect to any
act or omission occurring prior to such amendment or repeal.

         TENTH. The Corporation shall, to the fullest extent permitted by
Section 145 of the General Corporation Law of the State of Delaware, as amended
from time to time, indemnify each 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, by reason
of the fact that he is or was, or has agreed to become, a director or officer of
the Corporation, or is or was serving, or has agreed to serve, at the request of
the Corporation, as a director, officer or trustee of, or in a similar capacity
with, another corporation, partnership, joint venture, trust or other enterprise
(including attorneys' fees), judgments, fines and amounts paid in settlement
actually and reasonably incurred by him or on his behalf in connection with such
action, suit or proceeding and any appeal therefrom.

         Indemnification may include payment by the Corporation of expenses in
defending an action or proceeding in advance of the final disposition of such
action or proceeding upon receipt of any undertaking by the person indemnified
to repay such payment if it is ultimately determined that such person is not
entitled to indemnification under this Article TENTH, which undertaking may be
accepted without reference to the financial ability of such person to make such
repayments.

         The Corporation shall not indemnify any such person seeking
indemnification in connection with a proceeding (or part thereof) initiated by
such person unless the initiation thereof was approved by the Board of Directors
of the Corporation.

         The indemnification rights provided in this Article TENTH (i) shall not
be deemed exclusive of any other rights to which those indemnified may be
entitled under any law, agreement or vote of stockholders or disinterested
directors or otherwise, and (ii) shall inure to the benefit of the heirs,
executors and administrators of such persons. The Corporation may, to the extent
authorized from time to time by its Board of Directors, grant indemnification
rights to other employees or agents of the Corporation or other persons serving
the Corporation and such rights may be equivalent to, or greater or less than,
those set forth in this Article TENTH.

         ELEVENTH: (a) Except as set forth in part (b) of this Article ELEVENTH,
the affirmative vote of the holders of 66-2/3% of the shares of all classes of
stock of the Corporation entitled to vote for the election of directors,
considered for the purposes of this Article ELEVENTH as one class,


                                     - 12 -
<PAGE>

shall be required (i) for the adoption of any agreement for the merger or
consolidation of the Corporation or any Subsidiary (as hereinafter defined) with
or into any Other Corporation (as hereinafter defined), (ii) to authorize any
sale, lease, exchange, mortgage, pledge or other disposition of all or
substantially all of the assets of the Corporation or any Subsidiary to any
Other Corporation, (iii) to authorize the issuance or transfer by the
Corporation of any Substantial Amount (as hereinafter defined) of securities of
the Corporation in exchange for the securities or assets of any Other
Corporation, or (iv) to engage in any other transaction the effect of which is
to combine the assets and business of the Corporation or any Subsidiary with any
Other Corporation. Such affirmative vote shall be in addition to the vote of the
holders of the stock of the Corporation otherwise required by law, the Restated
Certificate of Incorporation of the Corporation or any agreement or contract to
which the Corporation is a party.

                  (b) The provisions of part (a) of this Article ELEVENTH shall
not be applicable to any transaction described therein if such transaction is
approved by a resolution of the Board of Directors of the Corporation, provided
that the directors voting in favor of such resolution include a majority of the
persons who were duly elected and acting members of the Board of Directors prior
to the time any such Other Corporation became a Beneficial Owner (as hereinafter
defined) of 5% or more of the shares of stock of the Corporation entitled to
vote for the election of directors. In considering such transaction, the Board
of Directors shall give due consideration to such factors as it deems relevant,
which may include without limitation the social and economic effects on the
employees, customers, suppliers and other constituents of the Corporation and
its Subsidiaries and on the communities in which the Corporation and its
Subsidiaries operate or are located.

                  (c) The Board of Directors shall have the power and duty to
determine for the purposes of this Article ELEVENTH, on the basis of information
known to such Board, if and when any Other Corporation is the Beneficial Owner
of 5% or more of the outstanding shares of stock of the Corporation entitled to
vote for the election of directors. Any such determination, if made in good
faith, shall be conclusive and binding for all purposes of this Article
ELEVENTH.

                  (d) As used in this Article ELEVENTH, the following terms
shall have the meanings indicated:

                           "Other Corporation" means any person, firm,
corporation or other entity, other than a Subsidiary of the Corporation, which
is the Beneficial Owner of 5% or more of the shares of stock of the Corporation
entitled to vote in the election of directors.

                           "Subsidiary" means any corporation in which the
Corporation owns, directly or indirectly, more than 50% of the voting
securities.

                           "Substantial Amount" means any securities of the
Corporation having a then fair market value of more than $500,000.

                           An Other Corporation (as defined above) shall be
deemed to be the "Beneficial Owner" of stock if such Other Corporation or any
"affiliate" or "associate" of such Other Corporation (as those terms are defined
in Rule 212b-2 promulgated under the Securities and Exchange Act of 1934 (15
U.S.C. 78 aaa et seq.), as amended from time to time), directly or indirectly,
controls the voting of such stock or has any options, warrants, conversion or
other rights to acquire such stock.

                                     - 13 -
<PAGE>

                  (e) This Article ELEVENTH may not be amended, revised or
revoked, in whole or in part, except by the affirmative vote of the holders of
66 2/3% of the shares of all classes of stock of the Corporation entitled to
vote for the election of directors, considered for the purposes of this Article
ELEVENTH as one class of stock.

         TWELFTH: No action required to be taken or that may be taken at any
annual or special meeting of stockholders of the Corporation may be taken by
written consent without a meeting, and the power of stockholders to consent in
writing, without a meeting, to the taking of any action is specifically denied.

         This Article TWELFTH may not be amended, revised or revoked, in whole
or in part, except by the affirmative vote of the holders of 66-2/3% of the
voting power of the shares of all classes of stock of the Corporation entitled
to vote for the election of directors, considered for the purposes of this
Article TWELFTH as one class of stock.

         THIRTEENTH: The Corporation reserves the right to amend, alter, change
or repeal any provision contained in this Restated Certificate of Incorporation,
in the manner now or hereafter prescribed by statute, and all rights conferred
upon stockholders herein are granted subject to this reservation.

         D. The foregoing Restated Certificate of Incorporation has been duly
adopted by the Board of Directors of the Corporation.

         E. The foregoing Restated Certificate of Incorporation was approved by
the written consent of the holders of (i) a majority of the outstanding shares
of Common Stock and Preferred Stock, voting as a single class and (ii) a
majority of the holders of the outstanding shares of each of the Series A
Convertible Preferred Stock, Series B Convertible Preferred Stock, Series C
Convertible Preferred Stock, Series D Convertible Preferred Stock and Series E
Convertible Preferred Stock, each voting separately as a class, all in
accordance with Sections 228, 242, and 245 of the Delaware General Corporation
Law.

         IN WITNESS WHEREOF, EPIX Medical, Inc. has caused this Restated
Certificate of Incorporation to be signed by Michael D. Webb, its President, and
attested by William T. Whelan, its Assistant Secretary, this 4th day of February
1997.


                                 EPIX MEDICAL, INC.

                                 By: /s/ Michael D. Webb
                                     ----------------------------------
                                         Michael D. Webb
                                         President


ATTEST:

By:/s/ William T. Whelan
   --------------------------------------
         William T. Whelan
         Assistant Secretary


                                     - 14 -



                                                                     EXHIBIT 4.2

                          AMENDED AND RESTATED BY-LAWS

                                       OF

                               EPIX MEDICAL, INC.


                                    ARTICLE I

                                  STOCKHOLDERS

                  SECTION 1. Place of Meetings. All meetings of stockholders
shall be held at such place within or without the State of Delaware as may be
designated from time to time by the Board of Directors or, if not so designated,
at the principal office of the corporation.

                  SECTION 2. Annual Meeting. The annual meeting of stockholders
for the election of directors and the transaction of such other business as may
properly come before the meeting shall be held on such date and at such hour and
place as the directors or an officer designated by the directors may determine.
If the annual meeting is not held on the date designated therefor, the directors
shall cause the meeting to be held as soon thereafter as convenient.

                  SECTION 3. Special Meetings. Special meetings of the
stockholders may be called at any time by the President or the Board of 
Directors.

                  SECTION 4. Notice of Meetings. Except where some other notice
is required by law, written notice of each meeting of stockholders, stating the
place, date and hour thereof and the purposes for which the meeting is called,
shall be given by or under the direction of the Secretary, not less than ten nor
more than sixty days before the date fixed for such meeting, to each stockholder
entitled to vote at such meeting of record at the close of business on the day
fixed by the Board of Directors as a record date for the determination of the
stockholders entitled to vote at such meeting or, if no such date has been
fixed, of record at the close of business on the day before the day on which
notice is given. Notice shall be given personally to each stockholder or left at
his or her residence or usual place of business or mailed postage prepaid and
addressed to the stockholder at his or her address as it appears upon the
records of the corporation. In case of the death, absence, incapacity or refusal
of the Secretary, such notice may be given by a person designated either by the
Secretary or by the person or persons calling the meeting or by the Board of
Directors. A waiver of such notice in writing, signed by the person or persons
entitled to said notice, whether before or after the time stated therein, shall
be deemed equivalent to such notice. Attendance of a person at a meeting of
stockholders shall constitute a waiver of notice of such meeting, except when
the stockholder attends a meeting for the express purpose of objecting, at the
beginning of the meeting, 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 stockholders need be
specified in any written waiver of notice. Notice of any meeting of the
stockholders shall be deemed to have been given to any person who may become a
stockholder of record after the mailing


                                     - 15 -
<PAGE>

of such notice and prior to such meeting. Except as required by statute, notice
of any adjourned meeting of the stockholders shall not be required.

         SECTION 5. Stockholder Nominations of Directors. Only persons who are
nominated in accordance with the following procedures shall be eligible for
election as directors at any annual or special meeting. Nominations of persons
for election as directors may be made by or at the direction of the Board of
Directors, or by any stockholder entitled to vote for the election of directors
at the meeting who complies with the notice procedures set forth in this Section
5. Such nominations, other than those made by or at the direction of the Board,
shall be made pursuant to timely notice in writing to the Chairman, if any, the
President, the Secretary or the Treasurer. To be timely, a stockholder's notice
shall be delivered to or mailed and received at the principal executive offices
of the corporation not less than 50 days nor more than 75 days prior to the
meeting; provided, however, that if less than 65 days' notice or prior public
disclosure of the date of the meeting is given or made to stockholders, notice
by the stockholder to be timely must be so received not later than the close of
business on the 15th day following the day on which such notice of the date of
the meeting was mailed or such public disclosure was made. Such stockholder's
notice shall set forth: (a) as to each person whom the stockholder 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
stockholder giving the notice (i) the name and record address of such
stockholder and (ii) the class and number of shares of capital stock of the
corporation which are beneficially owned by such stockholder. No person shall be
eligible for election as a director at any annual or special meeting of
stockholders unless nominated in accordance with the procedures set forth
herein. Nothing in this Section 5 shall be deemed to grant stockholders the
right have such nominations included on the agenda or in the notice or proxy
materials for such meeting except as otherwise required by law.

         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 6. Record Date. The Board of Directors may fix in
advance a record date for the determination of the stockholders entitled to
notice of or to vote at any meeting of stockholders, 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. Such record date shall
not be more than 60 nor less than 10 days before the date of such meeting, nor
more than 60 days prior to any other action to which such record date relates.

         If no record date is fixed, the record date for determining
stockholders entitled to notice of or to vote at a meeting of stockholders shall
be at the close of business on the day before the day on which notice is given,
or, if notice is waived, at the close of business on the day before the day on
which the meeting is held. The record date for determining stockholders for any
other purpose shall be at the close of business on the day on which the Board of
Directors adopts the resolution relating to such purpose. A determination of
stockholders of record entitled to notice of or to vote at a meeting of
stockholders shall apply to any adjournment of the meeting; provided, however,
that the Board of Directors may fix a new record date for the adjourned meeting.

                                     - 16 -
<PAGE>

         SECTION 7. Advance Notice of Stockholder-Proposed Business at Annual
Meetings. At an annual meeting of the stockholders, only such business shall be
conducted as shall have been properly brought before the meeting. To be brought
properly before an annual meeting, business must be either (a) specified in the
notice of meeting (or any supplement thereto) given by or at the direction of
the President or the Board of Directors, (b) otherwise properly brought before
the meeting by or at the direction of the Board or (c) otherwise properly
brought before the meeting by a stockholder. In addition to any other applicable
requirements, for business to be brought properly before an annual meeting by a
stockholder, the stockholder must have given timely notice thereof in writing to
the Chairman, if any, the President, the Secretary or the Treasurer. To be
timely, a stockholder's notice must be delivered to or mailed and received at
the principal executive offices of the corporation not less than 50 days nor
more than 75 days prior to the meeting; provided, however, that if less than 65
days' notice or prior public disclosure of the date of the meeting is given or
made to stockholders, notice by the stockholder to be timely must be so received
not later than the close of business on the 15th day following the day on which
such notice of the date of the annual meeting was mailed or such public
disclosure was made. A stockholder's notice shall set forth as to each matter
the stockholder 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 conducting such business at the annual meeting, (ii) the name
and record address of the stockholder proposing such business, (iii) the class
and number of shares of the corporation which are beneficially owned by the
stockholder and (iv) any material interest of the stockholder 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 6, provided, however, that nothing in this
Section 6 shall be deemed to preclude discussion by any stockholder of any
business properly brought before the annual meeting in accordance with said
procedure; provided, further, that nothing in this Section 6 shall be deemed to
grant stockholders the right have such business included on the agenda or in the
notice or proxy materials for such meeting except as otherwise required by law.

         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 6, and if
he should so determine, he shall so declare to the meeting and any such business
not properly brought before the meeting shall not be transacted.

                  SECTION 8. Voting List. The officer who has charge of the
stock ledger of the corporation shall make or have made, at least ten days
before every meeting of stockholders, a complete list of the stockholders,
arranged in alphabetical order, and showing the address of each stockholder and
the number of shares registered in the name of each stockholder. Such list shall
be open to the examination of any stockholder, for any purpose germane to the
meeting, during ordinary business hours, for a period of at least ten days prior
to the meeting, either at a place within the city or other municipality or
community where the meeting is to be held, which place shall be specified in the
notice of the meeting, or if not so specified, at the place where the meeting is
to be held. The list shall also be produced and kept at the time and place of
the meeting during the whole time thereof, and may be inspected by any
stockholder who is present. The stock ledger shall be the only evidence as to
who are the stockholders entitled to examine the stock ledger, the list required
by this section or the books of the corporation, or to vote at any meeting of
stockholders.

                  SECTION 9. Quorum of Stockholders. At any meeting of the
stockholders, the holders of a majority in interest of all stock issued and
outstanding and entitled to vote upon a question to be considered at the
meeting, present in person or represented by proxy, shall constitute a


                                     - 17 -
<PAGE>

quorum for the consideration of such question, but a smaller group may adjourn
any meeting from time to time. When a quorum is present at any meeting, a
majority of the stock represented thereat and entitled to vote shall, except
where a larger vote is required by law, by the Certificate of Incorporation, or
by these by-laws, decide any question brought before such meeting. Any election
by stockholders shall be determined by a plurality of the vote cast by the
stockholders entitled to vote at the election.

                  SECTION 10. Proxies and Voting. Unless otherwise provided in
the Certificate of Incorporation, each stockholder shall at every meeting of the
stockholders be entitled to one vote in person or by proxy for each share of the
capital stock held of record by such stockholder, but no proxy shall be voted or
acted upon after three years from its date, unless said proxy provides for a
longer period. Persons holding stock in a fiduciary capacity shall be entitled
to vote the shares so held, and persons whose stock is pledged shall be entitled
to vote, unless in the transfer by the pledger on the books of the corporation
the pledgee shall have been expressly empowered to vote thereon, in which case
only the pledgee or the pledgee's proxy may represent said stock and vote
thereon. Shares of the capital stock of the corporation belonging to the
corporation or to another corporation, a majority of whose shares entitled to
vote in the election of directors is owned by the corporation, shall neither be
entitled to vote nor be counted for quorum purposes.

                  SECTION 11. Conduct of Meeting. Meetings of the stockholders
shall be presided over by one of the following officers in the order of
seniority and if present and acting: the President, a Vice President, the
Chairman of the Board, if any, the Vice Chairman of the Board, if any, or, if
none of the foregoing is in office and present and acting, a chairman to be
chosen by the stockholders. The Secretary of the corporation, if present, or an
Assistant Secretary, shall act as secretary of every meeting, but if neither the
Secretary nor an Assistant Secretary is present the chairman of the meeting
shall appoint a secretary of the meeting.


                                   ARTICLE II

                                    DIRECTORS

                  SECTION 1. General Powers. The business and affairs of the
corporation shall be managed by or under the direction of a Board of Directors,
who may exercise all of the powers of the corporation which are not by law or
the Certificate of Incorporation required to be exercised by the stockholders.
In the event of a vacancy in the Board of Directors, the remaining directors,
except as otherwise provided by law, may exercise the powers of the full Board
until the vacancy is filled.

                  SECTION 2. Number, Election, Tenure and Qualification. Subject
to any restrictions contained in the Certificate of Incorporation, the number of
directors that shall constitute the Board of Directors shall be fixed by
resolution of the Board of Directors but in no event shall be less than three.
Directors shall be elected in the manner provided in the Certificate of
Incorporation by such stockholders as have the right to vote thereon. The number
of directors may be increased or decreased by action of the Board of Directors.
Directors need not be stockholders of the corporation.

                  SECTION 3. Enlargement of the Board. Subject to the
restrictions contained in the Certificate of Incorporation, the number of the
Board of Directors may be increased at any time, such increase to be effective
immediately, by vote of a majority of the directors then in office.

                                     - 18 -
<PAGE>

                  SECTION 4. Vacancies. Unless and until filled by the
stockholders, any vacancy in the Board of Directors, however occurring,
including a vacancy resulting from an enlargement of the Board and an unfilled
vacancy resulting from the removal of any director for cause, may be filled in
the manner provided in the Certificate of Incorporation. When one or more
directors shall resign from the Board, effective at a future date, a majority of
the directors then in office, including those who have so resigned, shall have
the power to fill such vacancy or vacancies, the vote thereon to take effect
when such resignation or resignations shall become effective. If at any time
there are no directors in office, then an election of directors may be held in
accordance with the General Corporation Law of the State of Delaware.

                  SECTION 5. Resignation. Any director may resign at any time
upon written notice to the corporation. Such resignation shall take effect at
the time specified therein, or if no time is specified, at the time of its
receipt by the President or Secretary.

                  SECTION 6. Removal. Directors may be removed from office only
as provided in the Certificate of Incorporation. The vacancy or vacancies thus
created may be filled by the stockholders at the meeting held for the purpose of
removal or, if not so filled, by the directors in the manner provided in Section
4 of this Article II.

                  SECTION 7. Committees. The Board of Directors may, by
resolution or resolutions passed by a majority of the whole Board of Directors,
designate one or more committees, each committee to consist of one or more
directors of the corporation. The Board of Directors may designate one or more
directors as alternate members of any committee, who may replace any absent or
disqualified member at any meeting of the committee. In the absence or
disqualification of any member of such committee or committees, the member or
members thereof present at any meeting and not disqualified from voting, whether
or not such member or members constitute a quorum, may unanimously appoint
another member of the Board of Directors to act at the meeting in the place of
such absent or disqualified member.

         A majority of all the members of any such committee may fix its rules
of procedure, determine its action and fix the time and place, whether within or
without the State of Delaware, of its meetings and specify what notice thereof,
if any, shall be given, unless the Board of Directors shall otherwise by
resolution provide. The Board of Directors shall have the power to change the
members of any such committee at any time, to fill vacancies therein and to
discharge any such committee, either with or without cause, at any time.

         Any such committee, unless otherwise provided in the resolution of the
Board of Directors, or in these by-laws, shall have and may exercise all the
powers and authority of the Board of Directors in the management of the business
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
such power or authority in reference to amending the Certificate of
Incorporation, 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 a dissolution of the corporation
or a revocation of a dissolution, or amending the By-laws of the corporation,
and, unless the resolution or these By-laws expressly so provide, no such
committee shall have the power or the authority to declare a dividend or to
authorize the issuance of stock.

         Each committee shall keep regular minutes of its meetings and make such
reports as the Board of Directors may from time to time request.

                                     - 19 -
<PAGE>

                  SECTION 8. Meetings of the Board of Directors. Regular
meetings of the Board of Directors may be held without call or formal notice at
such places either within or without the State of Delaware and at such times as
the Board may by vote from time to time determine. A regular meeting of the
Board of Directors may be held without call or formal notice immediately after
and at the same place as the annual meeting of the stockholders, or any special
meeting of the stockholders at which a Board of Directors is elected.

         Special meetings of the Board of Directors may be held at any place
either within or without the State of Delaware at any time when called by the
Chairman of the Board of Directors, the President, Treasurer, Secretary, or two
or more directors. Reasonable notice of the time and place of a special meeting
shall be given to each director unless such notice is waived by attendance or by
written waiver in the manner provided in these by-laws for waiver of notice by
stockholders. Notice may be given by, or by a person designated by, the
Secretary, the person or persons calling the meeting, or the Board of Directors.
No notice of any adjourned meeting of the Board of Directors shall be required.
In any case it shall be deemed sufficient notice to a director to send notice by
mail at least seventy-two hours, or by telegram at least forty-eight hours,
before the meeting, addressed to such director at his or her usual or last known
business or home address.

         Directors or members of any committee designated by the directors may
participate in a meeting of the Board of Directors or such committee by means of
conference telephone or similar communications equipment by means of which all
persons participating in the meeting can hear each other, and participation by
such means shall constitute presence in person at such meeting.

                  SECTION 9. Quorum and Voting. A majority of the total number
of directors shall constitute a quorum, except that when a vacancy or vacancies
exist in the Board, a majority of the directors then in office (but not less
than one-third of the total number of the directors) shall constitute a quorum.
A majority of the directors present, whether or not a quorum is present, may
adjourn any meeting from time to time. The vote of a majority of the directors
present at any meeting at which a quorum is present shall be the act of the
Board of Directors, except where a different vote is required or permitted by
law, by the Certificate of Incorporation, or by these by-laws.

                  SECTION 10. Compensation. The Board of Directors may fix fees
for their services and for their membership on committees, and expenses of
attendance may be allowed for attendance at each meeting. Nothing herein
contained shall be construed to preclude any director from serving the
corporation in any other capacity as an officer, agent or otherwise, and
receiving compensation therefor.

                  SECTION 11. Action Without Meeting. 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, and without notice, if a
written consent thereto is signed by all members of the Board of Directors, or
of such committee, as the case may be, and such written consent is filed with
the minutes of proceedings of the Board of Directors or such committee.

                                   ARTICLE III

                                    OFFICERS

                                     - 20 -
<PAGE>

                  SECTION 1. Titles. The officers of the corporation shall
consist of a President, a Secretary, a Treasurer, and such other officers with
such other titles as the Board of Directors shall determine, including without
limitation a Chairman of the Board, a Vice Chairman of the Board, and one or
more Vice Presidents, Assistant Treasurers, or Assistant Secretaries.

                  SECTION 2. Election and Term of Office. The officers of the
corporation shall be elected annually by the Board of Directors at its first
meeting following the annual meeting of the stockholders. Each officer shall
hold office until his or her successor is elected and qualified, unless a
different term is specified in the vote electing such officer, or until his or
her earlier death, resignation or removal.

                  SECTION 3. Qualification. Unless otherwise provided by
resolution of the Board of Directors, no officer, other than the Chairman or
Vice Chairman of the Board, need be a director. No officer need be a
stockholder. Any number of offices may be held by the same person, as the
directors shall determine.

                  SECTION 4. Removal. Any officer may be removed, with or
without cause, at any time, by resolution adopted by the Board of Directors.

                  SECTION 5. Resignation. Any officer may resign by delivering a
written resignation to the corporation at its principal office or to the
President or Secretary. Such resignation shall be effective upon receipt or at
such later time as may be specified therein.

                  SECTION 6. Vacancies. The Board of Directors may at any time
fill any vacancy occurring in any office for the unexpired portion of the term
and may leave unfilled for such period as it may determine any office other than
those of President, Treasurer and Secretary.

                  SECTION 7. Powers and Duties. The officers of the corporation
shall have such powers and perform such duties as are specified herein and as
may be conferred upon or assigned to them by the Board of Directors, and shall
have such additional powers and duties as are incident to their office except to
the extent that resolutions of the Board of Directors are inconsistent
therewith.

                  SECTION 8. President and Vice Presidents. The President shall
be the chief executive officer of the corporation, shall preside at all meetings
of the stockholders and the Board of Directors unless a Chairman or Vice
Chairman of the Board is elected by the Board, empowered to preside, and present
at such meeting, shall have general and active management of the business of the
corporation and general supervision of its officers, agents and employees, and
shall see that all orders and resolutions of the Board of Directors are carried
into effect.

         In the absence of the President or in the event of his or her inability
or refusal to act, the Vice President if any (or in the event there be more than
one Vice President, the Vice Presidents in the order designated by the
directors, or in the absence of any designation, then in the order of their
election) shall perform the duties of the President, and when so acting, shall
have all the powers of and be subject to all the restrictions upon the
President. The Board of Directors may assign to any Vice President the title of
Executive Vice President, Senior Vice President or any other title selected by
the Board of Directors.

                  SECTION 9. Secretary and Assistant Secretaries. The Secretary
shall attend all meetings of the Board of Directors and of the stockholders and
record all the proceedings of such meetings in a book to be kept for that
purpose, shall give, or cause to be given, notice of all meetings


                                     - 21 -
<PAGE>

of the stockholders and special meetings of the Board of Directors, shall
maintain a stock ledger and prepare lists of stockholders and their addresses as
required and shall have custody of the corporate seal which the Secretary or any
Assistant Secretary shall have authority to affix to any instrument requiring it
and attest by any of their signatures. The Board of Directors may give general
authority to any other officer to affix and attest the seal of the corporation.

         The Assistant Secretary if any (or if there be more than one, the
Assistant Secretaries in the order determined by the Board of Directors of if
there be no such determination, then in the order of their election) shall, in
the absence of the Secretary or in the event of the Secretary's inability or
refusal to act, perform the duties and exercise the powers of the Secretary.

                  SECTION 10. Treasurer and Assistant Treasurers. The Treasurer
shall have the custody of the corporate funds and securities, shall keep full
and accurate accounts of receipts and disbursements in books belonging to the
corporation and shall deposit all moneys and other valuable effects in the name
and to the credit of the corporation in such depositories as may be designated
by the Board of Directors. The Treasurer shall disburse the funds of the
corporation as may be ordered by the Board of Directors or the President, taking
proper vouchers for such disbursements, and shall render to the President and
the Board of Directors, at its regular meetings, or whenever they may require
it, an account of all transactions and of the financial condition of the
corporation.

         The Assistant Treasurer if any (or if there be more than one, the
Assistant Treasurers in the order determined by the Board of Directors or if
there be no such determination, then in the order of their election) shall, in
the absence of the Treasurer or in the event of his or her inability or refusal
to act, perform the duties and exercise the powers of the Treasurer.

                  SECTION 11. Bonded Officers. The Board of Directors may
require any officer to give the corporation a bond in such sum and with such
surety or sureties as shall be satisfactory to the Board of Directors upon such
terms and conditions as the Board of Directors may specify, including without
limitation a bond for the faithful performance of the duties of such officer and
for the restoration to the corporation of all property in his or her possession
or control belonging to the corporation.

                  SECTION 12. Salaries. Officers of the corporation shall be
entitled to such salaries, compensation or reimbursement as shall be fixed or
allowed from time to time by the Board of Directors.


                                   ARTICLE IV

                                      STOCK

                  SECTION 1. Certificates of Stock. One or more certificates of
stock, signed by the Chairman or Vice Chairman of the Board of Directors or by
the President or Vice President and by the Treasurer or an Assistant Treasurer
or the Secretary or an Assistant Secretary, shall be issued to each stockholder
certifying, in the aggregate, the number of shares owned by the stockholder in
the corporation. Any or all signatures on any such certificate may be
facsimiles. In case any officer, transfer agent or registrar who shall have
signed or whose facsimile signature shall have been placed upon a certificate
shall have ceased to be such officer, transfer agent or registrar before such
certificate is issued, it may be issued by the corporation with the same effect
as if he or she were such officer, transfer agent or registrar at the date of
issue.

                                     - 22 -
<PAGE>

         Each certificate for shares of stock which are subject to any
restriction on transfer pursuant to the Certificate of Incorporation, the
by-laws, applicable securities laws, or any agreement among any number of
stockholders or among such holders and the corporation shall have conspicuously
noted on the face or back of the certificate either the full text of the
restriction or a statement of the existence of such restriction.

                  SECTION 2. Transfers of Shares of Stock. Subject to the
restrictions, if any, stated or noted on the stock certificates, shares of stock
may be transferred on the books of the corporation by the surrender to the
corporation or its transfer agent of the certificate representing such shares
properly endorsed or accompanied by a written assignment or power of attorney
properly executed, and with such proof of authority or the authenticity of
signature as the corporation or its transfer agent may reasonably require. The
corporation shall be entitled to treat the record holder of stock as shown on
its books as the owner of such stock for all purposes, including the payment of
dividends and the right to vote with respect to that stock, regardless of any
transfer, pledge or other disposition of that stock, until the shares have been
transferred on the books of the corporation in accordance with the requirements
of these by-laws.

                  SECTION 3. Lost Certificates. A new certificate of stock may
be issued in the place of any certificate theretofore issued by the corporation
and alleged to have been lost, stolen, destroyed, or mutilated, upon such terms
in conformity with law as the Board of Directors shall prescribe. The directors
may, in their discretion, require the owner of the lost, stolen, destroyed or
mutilated certificate, or the owner's legal representatives, to give the
corporation a bond, in such sum as they may direct, to indemnify the corporation
against any claim that may be made against it on account of the alleged loss,
theft, destruction or mutilation of any such certificate, or the issuance of any
such new certificate.

                  SECTION 4. Fractional Share Interests. The corporation may,
but shall not be required to, issue fractions of a share. If the corporation
does not issue fractions of a share, it shall (1) arrange for the disposition of
fractional interests by those entitled thereto, (2) pay in cash the fair value
of fractions of a share as of the time when those entitled to receive such
fractions are determined or (3) issue scrip or warrants in registered or bearer
form which shall entitle the holder to receive a certificate for a full share
upon the surrender of such scrip or warrants aggregating a full share. A
certificate for a fractional share shall, but scrip or warrants shall not unless
otherwise provided therein, entitle the holder to exercise voting rights, to
receive dividends thereon, and to participate in any of the assets of the
corporation in the event of liquidation. The Board of Directors may cause scrip
or warrants to be issued subject to the conditions that they shall become void
if not exchanged for certificates representing full shares before a specified
date, or subject to the conditions that the shares for which scrip or warrants
are exchangeable may be sold by the corporation and the proceeds thereof
distributed to the holders of scrip or warrants, or subject to any other
conditions which the Board of Directors may impose.

                  SECTION 5. Dividends. Subject to the provisions of the
Certificate of Incorporation, the Board of Directors may, out of funds legally
available therefor, at any regular or special meeting, declare dividends upon
the common stock of the corporation as and when they deem expedient.

                                     - 23 -
<PAGE>

                                    ARTICLE V

                                    INSURANCE

                  SECTION 1. Indemnification. The corporation shall, to the full
extent permitted by the General Corporation Law of the State of Delaware, as
amended from time to time, the Certificate of Incorporation, and any agreement
of the Corporation, indemnify each person whom it may indemnify pursuant
thereto.

                  SECTION 2. Insurance. The corporation shall have power to
purchase and maintain insurance 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 such person and incurred by such person
in any such capacity or arising out of such person's status as such, whether or
not the corporation would have the power to indemnify such person against such
liability under the provisions of the General Corporation Law of the State of
Delaware.


                                   ARTICLE VI

                               GENERAL PROVISIONS

                  SECTION 1. Fiscal Year. Except as otherwise designated from
time to time by the Board of Directors, the fiscal year of the corporation shall
begin on the first day of January and end on the last day of December.

                  SECTION 2. Corporate Seal. The corporate seal shall be in such
form as shall be approved by the Board of Directors. The Secretary shall be the
custodian of the seal. The Board of Directors may authorize a duplicate seal to
be kept and used by any other officer.

                  SECTION 3. Certificate of Incorporation. All references in
these by-laws to the Certificate of Incorporation shall be deemed to refer to
the Certificate of Incorporation of the corporation, as in effect from time to
time.

                  SECTION 4. Execution of Instruments. The Chairman and Vice
Chairman of the Board of Directors, if any, the President, any Vice President,
and the Treasurer shall have power to execute and deliver on behalf and in the
name of the corporation any instrument requiring the signature of an officer of
the corporation, including deeds, contracts, mortgages, bonds, notes,
debentures, checks, drafts, and other orders for the payment of money. In
addition, the Board of Directors may expressly delegate such powers to any other
officer or agent of the corporation.

                  SECTION 5. Voting of Securities. Except as the directors may
otherwise designate, the President or Treasurer may waive notice of, and act as,
or appoint any person or persons to act as, proxy or attorney-in-fact for this
corporation (with or without power of substitution) at any meeting of
stockholders or shareholders of any other corporation or organization the
securities of which may be held by this corporation.

                  SECTION 6. Evidence of Authority. A certificate by the
Secretary, or an Assistant Secretary, or a temporary secretary, as to any action
taken by the stockholders, directors, a committee


                                     - 24 -
<PAGE>

or any officer or representative of the corporation shall, as to all persons who
rely on the certificate in good faith, be conclusive evidence of that action.

                  SECTION 7. Transactions with Interested Parties. No contract
or transaction between the corporation and one or more of the directors or
officers, or between the corporation and any other corporation, partnership,
association, or other organization in which one or more of the directors or
officers are directors or officers, or have a financial interest, shall be void
or voidable solely for that reason, or solely because the director or officer is
present at or participates in the meeting of the Board of Directors or a
committee of the Board of Directors which authorizes the contract or transaction
or solely because the vote of any such director is counted for such purpose, if:

         (1) The material facts as to the 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 or committee in good faith authorizes the contract
or transaction by the affirmative votes of a majority of the disinterested
directors, even though the disinterested directors be less than a quorum; or

         (2) The material facts as to the 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

         (3) 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 of the Board of Directors, or the stockholders.

         Common or interested directors may be counted in determining the
presence of a quorum at a meeting of the Board of Directors or of a committee
which authorizes the contract or transaction.

                  SECTION 8. Books and Records. The books and records of the
corporation shall be kept at such places within or without the State of Delaware
as the Board of Directors may from time to time determine.


                                   ARTICLE VII

                                   AMENDMENTS

                  SECTION 1. By the Board of Directors. These by-laws may be
altered, amended or repealed or new by-laws may be adopted by the affirmative
vote of a majority of the directors present at any regular or special meeting of
the Board of Directors at which a quorum is present.

                  SECTION 2. By the Stockholders. These by-laws may be altered,
amended or repealed or new by-laws may be adopted by the affirmative vote of the
holders of a majority of the shares of the capital stock of the corporation
issued and outstanding and entitled to vote at any regular meeting of
stockholders, or at any special meeting of stockholders provided notice of such
alteration, amendment, repeal or adoption of new by-laws shall have been stated
in the notice of such special meeting.


                                     - 25 -



                                                                     EXHIBIT 5.1

                               PALMER & DODGE LLP
                                One Beacon Street
                           Boston, Massachusetts 02108

Telephone: (617) 573-0100                             Facsimile: (617) 227-4420


                                  June 30, 1997


EPIX Medical, Inc.
71 Rogers Street
Cambridge, MA 02142

Ladies and Gentlemen:

         We are rendering this opinion in connection with the Registration
Statement on Form S-8 (the "Registration Statement") filed by EPIX Medical, Inc.
(the "Company") with the Securities and Exchange Commission (the "Commission")
under the Securities Act of 1933, as amended (the "Act"), on or about the date
hereof. The Registration Statement relates to 66,666 shares (the "Shares") of
the Company's Common Stock, $0.01 par value, offered pursuant to the provisions
of the Company's 1996 Director Stock Option Plan (the "Plan").

         We have acted as your counsel in connection with the preparation of the
Registration Statement and are familiar with the proceedings taken by the
Company in connection with the authorization of the issuance and sale of the
Shares. We have examined all such documents as we consider necessary to enable
us to render this opinion.

         Based upon the foregoing, we are of the opinion that when issued in
accordance with the terms of the Plan, the Shares will be duly authorized,
validly issued, fully paid and nonassessable.

         We hereby consent to the filing of this opinion as a part of the
Registration Statement and to the reference to our firm under Item 5 thereof.

                                Very truly yours,


                                /s/ PALMER & DODGE LLP

                                PALMER & DODGE LLP




                                     - 26 -





                                                                    EXHIBIT 23.1


                         Consent of Independent Auditors


We consent to the incorporation by reference in the Registration Statement (Form
S-8) pertaining to the 1996 Director Stock Option Plan of EPIX Medical, Inc. of
our report dated January 11, 1997 (except for Note 15, the date for which is
February 13, 1997), with respect to the financial statements of EPIX Medical,
Inc. included in its Annual Report (Form 10-K) for the year ended December 31,
1996.



                                                           /s/ ERNST & YOUNG LLP

                                                               ERNST & YOUNG LLP

Boston, Massachusetts
June 30, 1997



                                     - 27 -


                                                                    EXHIBIT 24.2



                               EPIX MEDICAL, INC.

                       Certificate of Assistant Secretary

         I, William T. Whelan, being the duly elected and acting Assistant
Secretary of EPIX Medical, Inc. (the "Company"), a Delaware corporation, hereby
certify that the following is a true, correct and complete copy of resolutions
duly adopted by the Board of Directors of the Company by unanimous written
consent dated April 25, 1997; and that said resolutions have not been amended or
rescinded and are now in full force and effect.

         Registration Statement on Form S-8

         VOTED:   That the President, any Vice President and the Treasurer of
                  the Company, each acting singly, are hereby authorized in the
                  name and on behalf of the Company to execute and file with the
                  Commission a registration statement on Form S-8 (the
                  "Registration Statement") relating to the registration under
                  the Securities Act of 1933, as amended (the "Act"), of 66,666
                  shares of the Company's Common Stock reserved for issuance
                  under the Company's 1996 Director Stock Option Plan, such
                  Registration Statement and any amendments thereto to be in
                  such form as may be approved by the officer executing the
                  same, his execution and filing thereof to be conclusive
                  evidence of this approval; and take any and all other action
                  as they or any of them may deem necessary or advisable to
                  effect such registration.

         VOTED:   That any officer of the Company executing, on behalf of the
                  Company or in any other capacity, the Registration Statement
                  and any and all amendments to such Registration Statement and
                  other documents to be filed with the Commission in connection
                  therewith is hereby authorized to execute the same through or
                  by Michael D. Webb, Jeffrey R. Lentz or William T. Whelan, as
                  attorney-in-fact, pursuant to a power of attorney reflecting
                  such authorization.

         WITNESS my signature and the seal of the Company affixed this 30th day
of June, 1997.



[CORPORATE SEAL]                                  /s/ William T. Whelan
                                                  ----------------------------
                                                  William T. Whelan
                                                  Assistant Secretary


                                      -28-


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