CHROMAVISION MEDICAL SYSTEMS INC
8-K, 1999-03-12
LABORATORY ANALYTICAL INSTRUMENTS
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<PAGE>   1
                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                    FORM 8-K


                                 CURRENT REPORT
   Pursuant to Section 13 or 15(d) of the Securities and Exchange Act of 1934


Date of Report (Date of earliest event reported)   March 8, 1999


                       CHROMAVISION MEDICAL SYSTEMS, INC.
             (Exact Name of Registrant as Specified in its Charter)

<TABLE>
<S>                                   <C>                    <C>
           Delaware                     0-22677                 75-2649072
       (State or Other                (Commission              (IRS Employer
Jurisdiction of Incorporation)        File Number)           Identification No.)
</TABLE>
        


  33171 Paseo Cerveza, San Juan Capistrano, California                92675
  (Address of Principal Executive Offices)                          (Zip Code)

Registrant's telephone number, including area code (949) 443-3355

                                       N/A
          (Former Name or Former Address, if Changed Since Last Report)


                                       1
<PAGE>   2

Item 5.   Other Events.

               On March 8, 1999, ChromaVision Medical Systems, Inc.
("ChromaVision") announced the adoption of a stockholder rights plan. Pursuant
to General Instruction F of Form 8-K, the following documents are incorporated
by reference herein and attached as exhibits hereto.

Item 7.   Exhibits.

               4.1. Summary of the Rights issued pursuant to the Rights
Agreement.

               4.2. Rights Agreement, dated as of February 10, 1999, between
ChromaVision and Harris Trust Company of California, as Rights Agent.

               4.3. Certificate of Designations of Series C Preferred Stock.

               Pursuant to the requirements of the Securities Exchange Act of
1934, the registrant has duly caused this report to be signed on its behalf by
the undersigned hereunto duly authorized.

Date:  March 8, 1999                   CHROMAVISION MEDICAL SYSTEMS INC.


                                       By:    /s/ DOUGLAS S. HARRINGTON, M.D.
                                              ---------------------------------
                                       Name:  Douglas S. Harrington, M.D.
                                       Its:   Chief Executive Officer
                                              (Duly Authorized Officer of the
                                              Registrant)




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<PAGE>   3
                                  EXHIBIT INDEX


<TABLE>
<CAPTION>
  Exhibit                                                                  Sequentially
  Number              Description                                         Numbered Page*
  -------             -----------                                         --------------
<S>                   <C>                                                 <C>
   4.1                Summary of the Rights issued pursuant to the
                      Rights Agreement

   4.2                Rights Agreement, dated as of February 10,
                      1999, between ChromaVision and
                      Harris Trust Company of California, as
                      Rights Agent

   4.3                Certificate of Designations of Series C Preferred
                      Stock
</TABLE>


- --------

*Contained only in manually executed version



                                       3

<PAGE>   1
                                   EXHIBIT 4.1

                              SUMMARY OF THE RIGHTS



4
<PAGE>   2
                              SUMMARY OF THE RIGHTS

        On February 10, 1999, the Board of Directors of ChromaVision Medical
Systems, Inc. (the "Company") authorized and declared a dividend of one
preferred stock purchase right (a "Right") for each share of common stock, par
value $.01 per share, of the Company (the "Common Shares"). The dividend is
payable on March 22, 1999 (the "Record Date") to the holders of record of Common
Shares as of the close of business on such date.

        The following is a brief description of the Rights. It is intended to
provide a general description only and is subject to the detailed terms and
conditions of the Rights Agreement (the "Rights Agreement") dated as of February
10, 1999 by and between the Company and Harris Trust Company of California, as
Rights Agent (the "Rights Agent").

        1. COMMON SHARE CERTIFICATES REPRESENTING RIGHTS

        Until the Distribution Date (as defined in Section 2 below), (a) the
Rights shall not be exercisable, (b) the Rights shall be attached to and trade
only together with the Common Shares and (c) the stock certificates representing
Common Shares also shall represent the Rights attached to such Common Shares.
Common Share certificates issued after the Record Date and prior to the
Distribution Date shall contain a notation incorporating the Rights Agreement by
reference.

        2. DISTRIBUTION DATE

        The "Distribution Date" is the earliest of (a) the tenth business day
following the date of the first public announcement that any person (other than
the Company or certain related entities, and with certain additional exceptions)
has become the beneficial owner of 15% or more of the then outstanding Voting
Shares (such person is a "15% Stockholder" and the date of such public
announcement is the "15% Ownership Date"), (b) the tenth business day (or such
later day as shall be designated by the Board of Directors) following the date
of the commencement of, or the announcement of an intention to commence, a
tender offer or exchange offer, the consummation of which would cause any person
to become a 15% Stockholder or (c) the first date, on or after the 15% Ownership
Date, upon which the Company is acquired in a merger or other business
combination in which the Company is not the surviving corporation or in which
the outstanding Common Shares are changed into or exchanged for stock, other
securities, cash or other property of another person, or upon which 50% or more
of the Company's consolidated assets or earning power are sold (other than in
transactions in the ordinary course of business). "Voting Shares" means (i)
Common Shares and (ii) any other shares of capital stock of the Company entitled
to vote generally in the election of directors or entitled to vote together with
the Common Shares in respect of any merger, consolidation, sale of all or
substantially all of the Company's assets, liquidation, dissolution or winding
up.

        In calculating the percentage of outstanding Voting Shares that are
beneficially owned by any person, such person shall be deemed to beneficially
own any Voting Shares issuable upon the exercise, exchange or conversion of any
options, warrants or other securities beneficially owned by such person;
provided, however, that such Voting Shares issuable upon such exercise shall not
be deemed outstanding for the purpose of calculating the percentage of Voting
Shares that are beneficially owned by any other person.



5
<PAGE>   3

        Upon the close of business on the Distribution Date, the Rights shall
separate from the Common Shares, Right certificates shall be issued and the
Rights shall become exercisable to purchase Preferred Shares as described in
Section 5 below.

        No Person who is the Beneficial Owner of 15% or more of the outstanding
Voting Shares as of February 10, 1999 shall be deemed a 15% Stockholder for as
long as such Person continues to be the Beneficial Owner of 15% or more of the
outstanding Voting Shares unless or until such Person shall acquire, without the
prior approval of the Board of Directors, Beneficial Ownership of additional
Voting Shares then outstanding, following such acquisition, is the Beneficial
Owner of more than 30% of the Voting Shares then outstanding.

        3. ISSUANCE OF RIGHT CERTIFICATES

        As soon as practicable following the Distribution Date, separate
certificates representing only Rights shall be mailed to the holders of record
of Common Shares as of the close of business on the Distribution Date, and such
separate Right certificates alone shall represent such Rights from and after the
Distribution Date.

        4. EXPIRATION OF RIGHTS

        The Rights shall expire on February 9, 2009 (the "Expiration Date"),
unless earlier redeemed or exchanged, unless the Distribution Date has
previously occurred and the Rights have separated from the Common Shares, in
which case the Rights will remain outstanding for ten years from the date they
separate.

        5. EXERCISE OF RIGHTS

        Unless the Rights have expired or been redeemed or exchanged, they may
be exercised, at the option of the holders, pursuant to paragraphs (a), (b) or
(c) below. No Right may be exercised more than once or pursuant to more than one
of such paragraphs. From and after the first event of the type described in
paragraphs (b) or (c) below, each Right that is beneficially owned by a 15%
Stockholder or that was attached to a Common Share that is subject to an option
beneficially owned by a 15% Stockholder shall be void.

               (a) Right to Purchase Preferred Shares. From and after the close
of business on the Distribution Date, each Right (other than a Right that has
become void) shall be exercisable to purchase one one-hundredth (1/100) of a
share of Series C Preferred Stock, par value $.01 per share, of the Company (the
"Preferred Shares"), at an exercise price of $30.00 (Thirty Dollars) (the
"Exercise Price"). Prior to the Distribution Date, the Company may substitute
for all or any portion of the Preferred Shares that would otherwise be issuable
upon exercise of the Rights, cash, assets or other securities having the same
aggregate value as such Preferred Shares. The Preferred Shares are nonredeemable
and, unless otherwise provided in connection with the creation of a subsequent
series of preferred stock, are subordinate to any other series of the Company's
preferred stock whether issued before or after the issuance of the Preferred
Shares. The Preferred Shares may not be issued except upon exercise of Rights.
The holder of a Preferred Share is entitled to receive when, as and if declared,
the greater of (i) cash and non-cash dividends in an amount equal to 100 times
the dividends declared on each Common Share or (ii) a preferential quarterly
dividend of $.25 per Preferred Share ($.0025 per one one-



6
<PAGE>   4
hundredth (1/100) of a Preferred Share). In the event of liquidation, the
holders of Preferred Shares shall be entitled to receive a liquidation payment
in an amount equal to the greater of (1) $100 per Preferred Share ($1.00 per one
one-hundredth (1/100) of a Preferred Share), plus all accrued and unpaid
dividends and distributions on the Preferred Shares, or (2) an amount equal to
100 times the aggregate amount to be distributed per Common Share. Each
Preferred Share has one hundred (100) votes per share (one vote per one
one-hundredth (1/100) of a Preferred Share), voting together with the Common
Shares. In the event of any merger, consolidation or other transaction in which
Common Shares are exchanged for or converted into other stock, securities or
property or are otherwise changed, the holder of a Preferred Share shall be
entitled to receive 100 times the amount received per Common Share. The rights
of the Preferred Shares as to dividends, voting and liquidation preferences are
protected by antidilution provisions. It is anticipated that the value of one
one-hundredth (1/100) of a Preferred Share should approximate the value of one
Common Share.

               (b) Right to Purchase Common Shares of the Company. From and
after the close of business on the tenth business day following the 15%
Ownership Date, each Right (other than a Right that has become void) shall be
exercisable to purchase, at the Exercise Price (initially $30.00), Common Shares
with a market value equal to two times the Exercise Price. If the Company does
not have sufficient Common Shares available for all Rights to be exercised, the
Company shall substitute for all or any portion of the Common Shares that would
otherwise be issuable upon the exercise of the Rights, cash, equity or debt
securities or other property having the same aggregate value as such Common
Shares.

               (c) Right to Purchase Common Stock of a Successor Corporation.
If, on or after the 15% Ownership Date, (i) the Company is acquired in a merger
or other business combination in which the Company is not the surviving
corporation, (ii) the Company is the surviving corporation in a merger or other
business combination in which all or part of the outstanding Common Shares are
changed into or exchanged for stock, other securities, cash or other property of
another person or (iii) 50% or more of the Company's consolidated assets or
earning power are sold (other than in transactions in the ordinary course of
business), then each Right (other than a Right that has become void and subject
to certain exceptions) shall thereafter be exercisable to purchase, at the
Exercise Price (initially $30.00), shares of common stock of the surviving
corporation or purchaser, respectively (the "Surviving Person"), with an
aggregate market value equal to two times the Exercise Price.

        6. ADJUSTMENTS TO PREVENT DILUTION

        The Exercise Price, the number of outstanding Rights and the number of
Preferred Shares or Common Shares issuable upon exercise of the Rights are
subject to adjustment from time to time as set forth in the Rights Agreement in
order to prevent dilution. With certain exceptions, no adjustment in the
Exercise Price shall be required until cumulative adjustments require an
adjustment of at least 1%.

        7. CASH PAID INSTEAD OF ISSUING FRACTIONAL SECURITIES

        The Company is not required to issue fractional shares upon exercise of
a Right (other than fractions of Preferred Shares that are integral multiples of
one one-hundredth of a Preferred



7
<PAGE>   5
Share and that may, at the election of the Company, be evidenced by depositary
receipts) and in lieu thereof, an adjustment in cash shall be made based on the
market price of such securities on the last trading date prior to the date of
exercise.

        8. REDEMPTION

        At any time prior to the earlier of (a) the tenth business day following
the 15% Ownership Date or (b) the first event of the type giving rise to
exercise rights under Section 5(c) above, the Board of Directors may, at its
option, direct the Company to redeem the Rights in whole, but not in part, at a
price of $.001 per Right (the "Redemption Price"), and the Company shall so
redeem the Rights. Immediately upon such action by the Board of Directors (the
date of such action being the "Redemption Date"), the only right of the holders
of Rights thereafter shall be to receive the Redemption Price.

        9. EXCHANGE

        At any time during the period of 180 days after the 15% Ownership Date,
the Board of Directors of the Company may, at its option, authorize and direct
the exchange of all, but not less than all, of the then outstanding Rights for
Common Shares, one one-hundredths of Preferred Shares, debt securities of the
Company, other property or any combination of the foregoing, which, as of the
date of the Board of Directors' action, has a current market price equal to the
difference between the Exercise Price and the current market price of the shares
that would otherwise be issuable upon exercise of a Right on such date, and the
Company shall so exchange the Rights. Immediately upon such action by the Board
of Directors, the right to exercise Rights shall terminate and the only right of
the holders of Rights thereafter shall be to receive the securities so
designated by the Board of Directors in accordance with the Exchange Ratio.

        10. NO STOCKHOLDER RIGHTS PRIOR TO EXERCISE

        Until a Right is exercised, the holder thereof, as such, will have no
rights as a stockholder of the Company (other than rights resulting from such
holder's ownership of Common Shares), including, without limitation, the right
to vote or to receive dividends.

        11. AMENDMENT OF RIGHTS AGREEMENT

        The Board of Directors may, from time to time, without the approval of
any holder of Rights, supplement or amend any provision of the Rights Agreement
in any manner, whether or not such supplement or amendment is adverse to any
holder of Rights, and the Company and the Rights Agent shall so supplement or
amend such provision; provided, however, that from and after the earliest of (a)
the tenth business day following the 15% Ownership Date, (b) the first event of
the type giving rise to exercise rights under Section 5(c) above or (c) the
Redemption Date, the Rights Agreement cannot be supplemented or amended in any
manner that would materially and adversely affect any holder of outstanding
Rights other than a 15% Stockholder or a person or entity involved in a merger
or other business combination with the Company or acquiring assets or earning
power of the company as described in Section 2(c) above.



8

<PAGE>   1
                                   EXHIBIT 4.2

                            FORM OF RIGHTS AGREEMENT



9
<PAGE>   2
                                RIGHTS AGREEMENT

                          dated as of February 10, 1999

                                 by and between

                       CHROMAVISION MEDICAL SYSTEMS, INC.

                                       and

                       HARRIS TRUST COMPANY OF CALIFORNIA

                                 as Rights Agent



10
<PAGE>   3
                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                            Page
                                                                            ----
<S>                                                                         <C>
Section 1.  Certain Definitions                                               1

Section 2.  Appointment of Rights Agent                                       6

Section 3.  Issuance of Rights Certificates                                   6

Section 4.  Form of Right Certificates                                        8

Section 5.  Countersignature and Registration                                 8

Section 6.  Transfer, Split Up, Combination and Exchange of Right 
            Certificates; Mutilated, Destroyed, Lost or Stolen Right 
            Certificates                                                      8

Section 7.  Exercise of Rights                                                9

Section 8.  Cancellation and Destruction of Right Certificates               11

Section 9.  Reservation and Availability of Capital Stock                    11

Section 10.  Securities Record Date                                          12

Section 11.  Adjustment of Exercise Price, Number of Shares Issuable 
             Upon Exercise of Rights or Number of Rights                     12

Section 12.  Certificate of Adjusted Exercise Price or Number of Shares 
             Issuable Upon Exercise of Rights                                17

Section 13.  Consolidation, Merger or Sale or Transfer of Assets or 
             Earning Power                                                   18

Section 14.  Fractional Rights and Fractional Shares                         20

Section 15.  Rights of Action                                                21

Section 16.  Agreement of Right Holders                                      21

Section 17.  Right Holder and Right Certificate Holder Not Deemed a 
             Stockholder                                                     22

Section 18.  Concerning the Rights Agent                                     22

Section 19.  Merger or Consolidation or Change of Name of Rights Agent       23
</TABLE>



11
<PAGE>   4

<TABLE>
<S>                                                                          <C>
Section 20.  Duties of Rights Agent                                          23

Section 21.  Change of Rights Agent                                          25

Section 22.  Issuance of New Right Certificates                              26

Section 23.  Redemption of Rights                                            26

Section 24.  Exchange of Rights                                              27

Section 25.  Notice of Certain Events                                        28

Section 26.  Notices                                                         29

Section 27.  Supplements and Amendments                                      30

Section 28.  Certain Covenants                                               30

Section 29.  Successors                                                      30

Section 30.  Benefits of this Agreement                                      30

Section 31.  Severability                                                    31

Section 32.  Governing Law                                                   31

Section 33.  Counterparts                                                    31

Section 34.  Descriptive Headings                                            33
</TABLE>

EXHIBIT A



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<PAGE>   5
                                TABLE OF EXHIBITS

Exhibit A -- Form of Right Certificate


                                       13
<PAGE>   6
                                RIGHTS AGREEMENT

        This Rights Agreement (the "Agreement") is made and entered into as of
the 10th day of February, 1999 by and between CHROMAVISION MEDICAL SYSTEMS,
INC., a Delaware corporation (the "Company"), and HARRIS TRUST COMPANY OF
CALIFORNIA, a trust company organized under the laws of the State of California,
as rights agent (the "Rights Agent").

        WHEREAS, the Board of Directors of the Company has authorized and
declared a dividend of one preferred share purchase right (a "Right") for each
Common Share (as hereinafter defined) of the Company outstanding on March 22,
1999 (the "Record Date"), each Right representing the right to purchase one
one-hundredth of a Preferred Share (as hereinafter defined), upon the terms and
subject to the conditions set forth herein, and has further authorized and
directed the issuance of one Right with respect to each Common Share that shall
become outstanding between the Record Date and the earliest of the Distribution
Date, the Redemption Date or the Expiration Date (as such terms are hereinafter
defined).

        NOW, THEREFORE, in consideration of the premises and the mutual
agreements set forth herein, the parties hereto hereby agree as follows:

        SECTION 1. CERTAIN DEFINITIONS.

        For purposes of this Agreement, the following terms have the meanings
indicated:

        "Affiliate" and "Associate" shall have the respective meanings ascribed
to such terms in Rule 12b-2 promulgated under the Exchange Act, as in effect on
the date hereof.

        A Person shall be deemed the "Beneficial Owner" of and shall be deemed
to "Beneficially Own" any securities:

               (i) that such Person or any of such Person's Affiliates or
        Associates beneficially owns, directly or indirectly, for purposes of
        Section 13(d) of the Exchange Act and Rule 13d-3 promulgated under the
        Exchange Act, in each case as in effect on the date hereof;

               (ii) that such Person or any of such Person's Affiliates or
        Associates has the right to acquire (whether such right is exercisable
        immediately, or only after the passage of time, compliance with
        regulatory requirements, the fulfillment of a condition or otherwise)
        pursuant to any agreement, arrangement or understanding, or upon the
        exercise of conversion rights, exchange rights (other than these
        Rights), rights, warrants or options, or otherwise, provided, however,
        that a Person shall not be deemed the Beneficial Owner of, or to
        Beneficially Own, securities tendered pursuant to a tender offer or
        exchange offer made by or on behalf of such Person or any of such
        Person's Affiliates or Associates until such tendered securities are
        accepted for purchase or exchange;



<PAGE>   7
               (iii) that such Person or any such Person's Affiliates or
        Associates has the right to vote, whether alone or in concert with
        others, pursuant to any agreement, arrangement or understanding,
        provided, however, that a Person shall not be deemed the Beneficial
        Owner of, or to Beneficially Own, any security if the agreement,
        arrangement or understanding to vote such security (A) arises solely
        from a revocable proxy given to such Person or any of such Person's
        Affiliates or Associates in response to a public proxy solicitation made
        pursuant to and in accordance with the applicable rules and regulations
        promulgated under the Exchange Act, and (B) is not also then reportable
        on Schedule 13D under the Exchange Act (or any comparable or successor
        report);

               (iv) that are Beneficially Owned, directly or indirectly, by any
        other Person with which such Person or any of such Person's Affiliates
        or Associates has any agreement, arrangement or understanding for the
        purpose of acquiring, holding, voting (other than voting pursuant to a
        revocable proxy as described in the proviso to clause (iii) of this
        definition of "Beneficial Owner") or disposing of any securities of the
        Company; and

               (v) that, on any day on or after the Distribution Date, evidence
        Rights that prior to such date were represented by certificates for
        Common Shares that such Person Beneficially Owns on such day.

Notwithstanding anything to the contrary in this Section l(b), a Person engaged
in business as an underwriter of securities shall not be deemed to be the
Beneficial Owner of, or to Beneficially Own, any securities acquired through
such Person's participation in good faith in a firm commitment underwriting
until the expiration of 40 days after the date of such acquisition.

        "Business Day" shall mean any day other than a Saturday, a Sunday or a
day on which banking institutions in the States of California or Illinois are
authorized or obligated by law or executive order to close.

        "Certificate of Designations" shall mean the certificate of designations
specifying the powers, designations, preferences and rights of the Preferred
Shares in accordance with the Delaware General Corporation Law.

        "Close of Business" on any given date shall mean 5:00 p.m., California
time, on such date; provided, however, that if such date is not a Business Day,
it shall mean 5:00 p.m., California time, on the next succeeding Business Day.

        "Closing Price" of a stock or other security on any day shall be the
last sale price, regular way, per share of such stock or unit of such other
security on such day or, in case no such sale takes place on such day, the
average of the closing bid and asked prices, regular way, in either case as
reported in the principal consolidated transaction reporting system with respect
to securities listed or admitted to trading on the New York Stock Exchange or,
if such stock or other security is not listed or admitted to trading on the New
York Stock Exchange, as reported in the principal consolidated transaction
reporting system with respect to securities listed on the principal national
securities exchange on which such stock or other security is listed or admitted



                                       15

<PAGE>   8
to trading or, if such stock or other security is not listed or admitted to
trading on any national securities exchange, the last quoted price or, if not so
quoted, the average of the high bid and low asked prices in the over-the-counter
market, as reported on the Nasdaq National Market ("NASDAQ") or such other
system then in use or, if on any such date such stock or other security is not
quoted by any such organization, the average of the closing bid and asked prices
as furnished by a professional market maker that makes a market in such stock or
other security and that is selected by the Board of Directors of the Company.

        "Common Share" shall mean one share of the Common Stock, par value $.01
per share, of the Company, unless used with reference to a Person other than the
Company, in which case it shall mean one share of each class of stock of such
Person having the right to vote generally in the election of directors or, if
such Person is a Subsidiary of another Person, one Common Share of the Person
that ultimately controls such Person.

        "Common Share Equivalent" shall have the meaning ascribed to it in
Section 11(a)(iii) hereof.

        "Current Market Price" per share of a stock or unit of any other
security on any date shall mean the average of the daily Closing Prices of such
stock or other security for the 30 consecutive Trading Days through and
including the Trading Day immediately preceding the date in question; provided,
however, that if any event shall have caused the Closing Price on any Trading
Day during such 30-day period not to be fully comparable with the Closing Price
on the date in question (or, if no Closing Price is available on the date in
question, on the Trading Day immediately preceding the date in question), then
each such non-comparable Closing Price so used shall be appropriately adjusted
by the Board of Directors in order to make the Closing Price on each Trading Day
during the period used for the determination of the Current Market Price fully
comparable with the Closing Price on such date in question (or, if applicable,
the immediately preceding Trading Day). "Current Market Price" per share of any
stock or unit of such other security that is not publicly held or so listed or
traded, and "Current Market Price" of any other property, shall mean the fair
value per share of such stock or unit of such other security, or the fair value
of such other property, respectively, as determined in good faith by the Board
of Directors of the Company based upon such appraisals or valuation reports of
such independent experts as the Board of Directors shall in good faith determine
appropriate, which determination shall be described in a statement filed by the
Company with the Rights Agent.

        "Distribution Date" shall have the meaning ascribed to it in Section 3
hereof.

        "Exchange Act" shall mean the Securities Exchange Act of 1934, as
amended.

        "Exempt Person" shall mean the Company, any wholly-owned Subsidiary of
the Company, any employee benefit plan of the Company or of a Subsidiary of the
Company and any Person holding Voting Shares for or pursuant to the terms of any
such employee benefit plan.

        "Exercise Price" shall have the meaning ascribed to it in Section 7(c)
hereof.



                                       16
<PAGE>   9

        "Expiration Date" shall mean February 10, 2009.

        "Person" shall mean any individual, firm, partnership, corporation,
association, group (as such term is used in Rule 13d-5 promulgated under the
Exchange Act as in effect on the date hereof) or other entity, and shall include
any successor (by merger or otherwise) of such entity.

        "Preferred Share" shall mean one share of the Series C Preferred Stock,
par value $.01 per share, of the Company, which shall have the rights and
preferences set forth in the Certificate of Designations for the Preferred
Shares.

        "Preferred Share Equivalent" shall have the meaning ascribed to it in
Section 11(b) hereof.

        "Record Date" shall have the meaning ascribed to it in the recitals
hereto.

        "Redemption Date" shall mean the date of the action of the Board of
Directors of the Company authorizing and directing the redemption of the Rights
pursuant to Section 23(a) hereof or the exchange of the Rights pursuant to
Section 24(a) hereof.

        "Redemption Price" shall have the meaning ascribed to it in Section
23(a) hereof.

        "Right Certificate", as that term is used with respect to any period
prior to the Distribution Date, shall have the meaning ascribed to it in Section
3(b) hereof, and, as that term is used with respect to any period on or after
the Distribution Date, shall have the meaning ascribed to it in Section 3(c)
hereof.

        "Rights Expiration Date" shall mean the Expiration Date, except if there
has been a Distribution Date, then it shall mean the tenth anniversary of the
Distribution Date.

        "Section 11(a)(ii) Event" shall have the meaning ascribed to it in
Section 11(a)(ii) hereof.

        "Section 13(a) Event" shall have the meaning ascribed to it in Section
13(a) hereof.

        "Securities Act" shall mean the Securities Act of 1933, as amended.

        "Subsidiary" of any Person shall mean any corporation or other Person of
which equity securities or equity interests representing a majority of the
voting power are owned, directly or indirectly, or which is effectively
controlled, by such Person.

        "Surviving Person" shall have the meaning ascribed to it in Section
13(a) hereof.

        "15% Ownership Date" shall mean the first date of public announcement
(which, for purposes of this definition, shall include, without limitation, a
report filed pursuant to Section 13(d) of the Exchange Act) by the Company or a
15% Stockholder containing the facts by virtue of which a Person has become a
15% Stockholder. 

        "15% Stockholder" shall mean any Person that Beneficially Owns 15% or
more of the 



                                       17
<PAGE>   10

Voting Shares of the Company then outstanding; provided, however, that the term
"15% Stockholder" shall not include: (i) an Exempt Person; (ii) any Person that
would not otherwise be a 15% Stockholder but for a reduction in the number of
outstanding Voting Shares resulting from a stock repurchase program or other
similar plan of the Company or from a self tender offer of the Company, which
plan or tender offer commenced on or after the date hereof; provided, however,
that the term "15% Stockholder" shall include such Person from and after the
first date upon which (A) such Person, since the date of the commencement of
such plan or tender offer, shall have acquired Beneficial Ownership of, in the
aggregate, a number of Voting Shares of the Company equal to 1% or more of the
Voting Shares of the Company then outstanding and (B) such Person, together with
all Affiliates and Associates of such Person, shall Beneficially Own 15% or more
of the Voting Shares of the Company then outstanding; (iii) any Person that
would not otherwise be a 15% Stockholder but for its Beneficial Ownership of
Rights; or (iv) any Person that is the Beneficial Owner of 15% or more of the
outstanding Voting Shares of the Company as of February 10, 1999 and thereafter
has continued to be the Beneficial Owner of at least 15% of the Voting Shares of
the Company than outstanding; provided, however, that the term "15% Stockholder"
shall include such Person from and after the first date upon which (A) such
Person, since February 10, 1999, shall have acquired, without the prior approval
of the Board of Directors of the Company, Beneficial Ownership of additional
Voting Shares and (B) such Person, together with all Affiliates and Associates
of such Person, shall Beneficially Own more than 30% of the Voting Shares of the
Company then outstanding. In calculating the percentage of the outstanding
Voting Shares that are Beneficially Owned by a Person for purposes of this
definition, Voting Shares that are Beneficially Owned by such Person shall be
deemed outstanding, and Voting Shares that are not Beneficially Owned by such
Person and that are subject to issuance upon the exercise or conversion of
outstanding conversion rights, exchange rights, rights, warrants or options
shall not be deemed outstanding. Any determination made by the Board of
Directors of the Company as to whether any Person is or is not a 15% Stockholder
shall be conclusive and binding upon all holders of Rights.

        "Trading Day" shall mean, as to any stock or other security, a day on
which the principal national securities exchange on which such stock or other
security is listed or admitted to trading is open for the transaction of
business or, if such stock or other security is not listed or admitted to
trading on any national securities exchange, a Business Day.

        "Voting Share" shall mean (i) a Common Share of the Company and (ii) any
other share of capital stock of the Company entitled to vote generally in the
election of directors or entitled to vote together with the Common Shares in
respect of any merger, consolidation, sale of all or substantially all of the
Company's assets, liquidation, dissolution or winding up. References in this
Agreement to a percentage or portion of the outstanding Voting Shares shall be
deemed a reference to the percentage or portion of the total votes entitled to
be cast by the holders of the outstanding Voting Shares.

        SECTION 2. APPOINTMENT OF RIGHTS AGENT. 

        The Company hereby appoints the Rights Agent to act as agent for the
Company and the holders of Rights in accordance with the terms and conditions
hereof, and the Rights Agent 



                                       18
<PAGE>   11
hereby accepts such appointment. The Company may from time to time appoint such
co-Rights Agents as it may deem necessary or desirable.

        SECTION 3. ISSUANCE OF RIGHTS CERTIFICATES.

        (a) "Distribution Date" shall mean the date, after the date hereof, that
is the earliest of (i) the tenth Business Day (or such later day as shall be
designated by the Board of Directors of the Company) following the date of the
commencement of, or the first public announcement of the intent of any Person,
other than an Exempt Person, to commence a tender offer or exchange offer, the
consummation of which would cause any Person to become a 15% Stockholder, (ii)
the date of the first Section 11(a)(ii) Event or (iii) the date of the first
Section 13(a) Event.

        (b) Until the Distribution Date, (i) the Rights shall be represented by
certificates for Common Shares (all of which certificates for Common Shares
shall be deemed to be Right Certificates) and not by separate Right
Certificates, (ii) the record holder of the Common Shares represented by each of
such certificates shall be the record holder of the Rights represented thereby
and (iii) the Rights shall be transferable only in connection with the transfer
of Common Shares. Until the earliest of the Distribution Date, the Redemption
Date or the Expiration Date, the surrender for transfer of such certificates for
Common Shares shall also constitute the surrender for transfer of the Rights
represented thereby.

        (c) As soon as practicable after the Distribution Date, and after
notification by the Company, the Rights Agent shall send, at the expense of the
Company, by first-class, postage-prepaid mail to each record holder of Common
Shares, as of the Close of Business on the Distribution Date, at the address of
such holder shown on the records of the Company, a Right Certificate
substantially in the form of Exhibit A hereto representing one Right for each
Common Share so held. From and after the Distribution Date, the Rights shall be
represented solely by such Right Certificates and may only be transferred by the
transfer of such Right Certificates, and the holders of such Right Certificates,
as listed in the records of the Company or any transfer agent or registrar for
such Rights, shall be the record holders of such Rights.

        (d) Certificates for Common Shares issued at any time after the Record
Date and prior to the earliest of the Distribution Date, the Redemption Date or
the Expiration Date, shall have impressed on, printed on, written on or
otherwise affixed to them the following legend: 

        This certificate also evidences and entitles the holder hereof to
        certain Rights as set forth in a Rights Agreement dated as of February
        10, 1999 by and between ChromaVision Medical Systems, Inc. and Harris
        Trust Company of California, as Rights Agent (the "Rights Agreement"),
        as amended to date, the terms and conditions of which are hereby
        incorporated herein by reference and a copy of which is on file at the
        principal executive offices of ChromaVision Medical Systems, Inc. Under
        certain circumstances specified in the Rights Agreement, such Rights
        will be represented by separate certificates and will no longer be
        represented by this certificate. Under certain circumstances specified
        in the Rights Agreement, Rights beneficially owned by certain persons
        may become null and void. ChromaVision Medical Systems, Inc. will mail
        to the record holder of 



                                       19
<PAGE>   12

        this certificate a copy of the Rights Agreement without charge promptly
        following receipt of a written request therefor. As described in the
        Rights Agreement, Rights Beneficially Owned by any Person who becomes a
        15% Stockholder or any Affiliate or Associate of a 15% Stockholder (as
        such capitalized terms are defined in the Rights Agreement) shall become
        null and void.

        (e) Certificates for Common Shares issued at any time on or after the
Distribution Date and prior to the earlier of the Redemption Date or the Rights
Expiration Date shall have impressed on, printed on, written on or otherwise
affixed to them the following legend:

        This certificate does not represent any Right issued pursuant to the
        terms of a Rights Agreement dated as of February 10, 1999 by and between
        ChromaVision Medical Systems, Inc. and Harris Trust Company of
        California, as Rights Agent.

        (f) In the event that at any time on or after the earlier of the date of
the first Section 11(a)(ii) Event or the date of the first Section 13(a) Event
and prior to the earlier of the Redemption Date or the Rights Expiration Date,
the Company shall issue any Common Shares pursuant to the exercise of conversion
rights, exchange rights, rights (other than Rights), warrants or options that
shall have been issued or granted prior to the earlier of the date of the first
Section 11(a)(ii) Event or the date of the first Section 13(a) Event, then,
unless the Board of Directors of the Company shall have provided otherwise at
the time of the issuance or grant of such conversion rights, exchange rights,
rights (other than Rights), warrants or options, the Rights Agent shall, as soon
as practicable after the date of such event, send by first-class,
postage-prepaid mail to the record holder of such Common Shares, at the address
of such holder as shown on the records of the Company, a Right Certificate
substantially in the form of Exhibit A hereto representing one Right for each
Common Share so issued.

        (h) Notwithstanding the foregoing provisions of this Section , the
Rights Agent shall not send any Right Certificate to any 15% Stockholder or any
of its Affiliates or Associates or to any Person if the Rights held by such
Person are Beneficially Owned by a 15% Stockholder or any of its Affiliates or
Associates. Any determination made by the Board of Directors of the Company as
to whether any Common Shares are or were Beneficially Owned at any time by a 15%
Stockholder or an Affiliate or Associate of a 15% Stockholder shall be
conclusive and binding upon all holders of Rights.

        SECTION 4. FORM OF RIGHT CERTIFICATES.

        The Right Certificates and the form of assignment, including
certificate, and the form of election to purchase, including certificate,
printed on the reverse thereof, when, as and if issued, shall be substantially
the same as Exhibit A hereto, and may have such marks of identification or
designation and such legends, summaries or endorsements printed thereon as the
Company may deem appropriate and as are not inconsistent with the provisions of
this Agreement, or as may be required to comply with any applicable law or with
any rule or regulation made pursuant thereto or with any rule or regulation of
any stock exchange upon which the Rights or the securities of the Company
issuable upon exercise of the Rights may from time to time be listed, or to
conform to usage. Subject to Section 22 hereof, Right Certificates, whenever
issued, that are issued in 



                                       20
<PAGE>   13
respect of Common Shares that were issued and outstanding as of the Close of
Business on the Distribution Date, shall be dated as of the Distribution Date.

        SECTION 5. COUNTERSIGNATURE AND REGISTRATION.

        (a) The Right Certificates shall be executed on behalf of the Company by
its Chairman of the Board, its Vice Chairman of the Board, its President or any
Vice President, either manually or by facsimile signature, and may have affixed
thereto the Company's seal or a facsimile thereof attested by its Secretary or
any Assistant Secretary, either manually or by facsimile signature. The Right
Certificates shall be manually countersigned by the Rights Agent and shall not
be valid for any purpose unless so countersigned. In case any officer of the
Company who shall have signed any of the Right Certificates shall cease to be
such officer of the Company before countersignature by the Rights Agent and
issuance and delivery by the Company, such Right Certificates may nevertheless
be countersigned by the Rights Agent and issued and delivered by the Company
with the same force and effect as though the person who signed such Right
Certificates had not ceased to be such officer of the Company. Any Right
Certificate may be signed on behalf of the Company by any person who at the
actual date of such execution shall be a proper officer of the Company to sign
such Right Certificate, even though such person was not such an officer at the
date of the execution of this Agreement.

        (b) Following the Distribution Date, the Rights Agent shall keep or
cause to be kept at its principal offices books for registration and transfer of
the Right Certificates issued hereunder. Such books shall show the names and
addresses of the respective holders of Right Certificates, the number of Rights
represented on its face by each Right Certificate and the date of each Right
Certificate.

        SECTION 6. TRANSFER, SPLIT UP, COMBINATION AND EXCHANGE OF RIGHT
        CERTIFICATES; MUTILATED, DESTROYED, LOST OR STOLEN RIGHT CERTIFICATES.

        (a) Subject to the provisions of Sections 6(c), 7(d) and 14 hereof, at
any time after the Close of Business on the Distribution Date, and so long as
the Rights represented thereby remain outstanding, any one or more Right
Certificates may be transferred, split-up, combined or exchanged for one or more
Right Certificates representing the same aggregate number of Rights as the Right
Certificates surrendered. Any registered holder desiring to transfer, split up,
combine or exchange one or more Right Certificates shall make such request in
writing delivered to the Rights Agent, and shall surrender the Right
Certificates to be transferred, split up, combined or exchanged at the office of
the Rights Agent with the form of assignment, including certificate, on the
reverse side thereof completed and duly executed, with signature guaranteed.
Thereupon, the Rights Agent shall countersign and deliver to the person entitled
thereto one or more Right Certificates, as so requested. The Company may require
payment of a sum sufficient to cover any tax or governmental charge that may be
imposed in connection with any transfer, split up, combination or exchange of
Right Certificates. 

        (b) Upon receipt by the Company and the Rights Agent of evidence
reasonably satisfactory to them of the loss, theft, destruction or mutilation of
a Right Certificate, and, in case of loss, theft or destruction, of indemnity or
security reasonably satisfactory to them and, at the 



                                       21
<PAGE>   14
Company's request, reimbursement to the Company and the Rights Agent of all
reasonable expenses incidental thereto, and upon surrender to the Rights Agent
and cancellation of such Right Certificate if mutilated, the Company shall issue
and deliver to the Rights Agent for delivery to the record holder of such Right
Certificate a new Right Certificate of like tenor in lieu of such lost, stolen,
destroyed or mutilated Right Certificate.

        (c) Notwithstanding anything to the contrary in this Section 6, the
Rights Agent shall not countersign and deliver a Right Certificate to any Person
if such Right Certificate represents, or would represent when held by such
Person, Rights that had become or would become null and void pursuant to Section
7(d) hereof.

        SECTION 7. EXERCISE OF RIGHTS.

        (a) Until the Distribution Date, no Right may be exercised.

        (b) Subject to Section 7(d) and (g) hereof and the other provisions of
this Agreement, at any time after the Close of Business on the Distribution Date
and prior to the Close of Business on the earlier of the Redemption Date or the
Rights Expiration Date, the registered holder of any Right Certificate may
exercise the Rights represented thereby in whole or in part upon surrender of
such Right Certificate, with the form of election to purchase, including
certificate, on the reverse side thereof completed and duly executed, with
signature guaranteed, to the Rights Agent at the office of the Rights Agent at
Harris Trust Company of California, 601 South Figueroa, 49th Floor, Los Angeles,
California 90017, together with payment of the Exercise Price for each Right
exercised. Upon the exercise of an exercisable Right and payment of the Exercise
Price in accordance with the provisions of this Agreement, the holder of such
Right shall be entitled to receive, subject to adjustment as provided herein,
one one-hundredth of a Preferred Share (or, following the occurrence of a
Section 11(a)(ii) Event or a Section 13(a) Event, Common Shares and/or other
securities).

        (c) The "Exercise Price" for the exercise of each Right shall initially
be $30.00 and shall be payable in lawful money of the United States of America
in accordance with Section 7(f) hereof. The Exercise Price and the number of
Preferred Shares (or, following the occurrence of a Section 11(a)(ii) Event or a
Section 13(a) Event, Common Shares and/or other securities) to be acquired upon
exercise of a Right shall be subject to adjustment from time to time as provided
in Sections 7(e), 11 and 13 hereof and the other provisions of this Agreement.

        (d) Notwithstanding anything in this Agreement to the contrary, from and
after the earlier of the date of the first Section 11(a)(ii) Event or the date
of the first Section 13(a) Event, any Rights that are or were Beneficially Owned
by a 15% Stockholder or any Affiliate or Associate of a 15% Stockholder at any
time on or after the Distribution Date shall be null and void, and for all
purposes of this Agreement such Rights shall thereafter be deemed not to be
outstanding, and any holder of such Rights (whether or not such holder is a 15%
Stockholder or an Affiliate or Associate of a 15% Stockholder) shall thereafter
have no right to exercise such Rights.

        (e) Prior to the Distribution Date, if the Board of Directors of the
Company shall have 



                                       22
<PAGE>   15
determined that such action adequately protects the interests of the holders of
Rights, the Company may, in its discretion, substitute for all or any portion of
the Preferred Shares that would otherwise be issuable (after the Close of
Business on the Distribution Date) upon the exercise of each Right and payment
of the Exercise Price (i) cash, (ii) other equity securities of the Company,
(iii) debt securities of the Company, (iv) other property or (v) any combination
of the foregoing, in each case having an aggregate Current Market Price equal to
the aggregate Current Market Price of the Preferred Shares for which
substitution is made. Subject to Section 7(d) hereof, in the event that the
Company takes any action pursuant to this Section 7(e), such action shall apply
uniformly to all outstanding Rights.

        (f) Upon receipt of a Right Certificate representing exercisable Rights,
with the form of election to purchase, including certificate, completed and duly
executed, with signature guaranteed, accompanied by payment of the Exercise
Price for each Right to be exercised and an amount equal to any applicable
transfer tax required to be paid by the holder of such Right Certificate in
accordance with Section 9 hereof by certified check or cashier's check payable
to the order of the Company, the Rights Agent shall thereupon promptly (i)
requisition from the transfer agent of the Preferred Shares (or, following the
occurrence of a Section 11(a)(ii) Event or a Section 13(a) Event, Common Shares
and/or securities) certificates for the number of Preferred Shares (or such
other securities) to be purchased, and the Company hereby irrevocably authorizes
such transfer agent to comply with all such requests, and/or, as provided in
Section 14 hereof, requisition from the depositary agent described therein
depositary receipts representing such number of one-hundredths of a Preferred
Share (or such other securities) as are to be purchased (in which case
certificates for the Preferred Shares (or such other securities) represented by
such receipts shall be deposited by the transfer agent with such depositary
agent) and the Company hereby directs such depositary agent to comply with such
request, (ii) when appropriate, requisition from the Company the amount of cash
to be paid in lieu of issuance of fractional Preferred Shares (or such other
securities) in accordance with Section 14 hereof, (iii) after receipt of such
certificates, depositary receipts or cash, cause the same to be delivered to or
upon the order of the registered holder of such Right Certificate, registered in
such name or names as may be designated by such holder and (iv) when
appropriate, after receipt thereof, deliver such cash to or upon the order of
the registered holder of such Right Certificate.

        (g) Notwithstanding the foregoing provisions of this Section 7, the
exercisability of the Rights shall be suspended for such period as shall
reasonably be necessary for the Company to register and qualify under the
Securities Act and any applicable securities law of any jurisdiction the
Preferred Shares and/or Common Shares or other securities to be issued pursuant
to the exercise of the Rights; provided, however, that nothing contained in this
Section 7 shall relieve the Company of its obligations under Section 9(c)
hereof.

        (h) In case the registered holder of any Right Certificate shall
exercise less than all of the Rights represented thereby, a new Right
Certificate representing Rights equivalent to the Rights remaining unexercised
shall be issued by the Rights Agent to the registered holder of such Right
Certificate or to such holder's duly authorized assigns, subject to the
provisions of Section 14 hereof.



                                       23
<PAGE>   16

        SECTION 8. CANCELLATION AND DESTRUCTION OF RIGHT CERTIFICATES.

        All Right Certificates surrendered for the purpose of exercise,
transfer, split up, combination or exchange shall, if surrendered to the Company
or to any of its agents, be delivered to the Rights Agent for cancellation or in
canceled form, or, if surrendered to the Rights Agent, shall be canceled by it,
and no Right Certificates shall be issued in lieu thereof except as expressly
permitted by this Agreement. The Company shall deliver to the Rights Agent for
cancellation and retirement, and the Rights Agent shall so cancel and retire,
any other Right Certificate purchased or acquired by the Company otherwise than
upon the exercise thereof. The Rights Agent shall deliver all canceled Right
Certificates to the Company or shall, at the written request of the Company,
destroy such canceled Right Certificates, and in such case shall deliver a
certificate of destruction thereof to the Company.

        SECTION 9. RESERVATION AND AVAILABILITY OF CAPITAL STOCK.

        (a) Subject to Sections 7(e) and 9(f) hereof, the Company shall cause to
be reserved and kept available out of its authorized and unissued equity
securities (or out of its authorized and issued equity securities held in its
treasury), the number of such equity securities that will from time to time be
sufficient to permit the exercise in full of all outstanding Rights.

        (b) In the event that any securities issuable upon exercise of the
Rights are listed on any national securities exchange, the Company shall use its
best efforts, from and after such time as the Rights become exercisable, to
cause all such securities issued or reserved for such issuance to be listed on
such exchange upon official notice of issuance upon such exercise.

        (c) If necessary to permit the issuance of securities upon exercise of
the Rights, the Company shall use its best efforts, from and after the
Distribution Date, to register and qualify such securities under the Securities
Act, the Exchange Act and any other applicable securities laws and to keep such
registration effective until the earlier of the Redemption Date or the Rights
Expiration Date.

        (d) The Company shall take all such action as may be necessary to ensure
that all securities delivered upon exercise of the Rights shall, at the time of
delivery of the certificates for such securities (subject to payment of the
Exercise Price), be duly and validly authorized and issued and fully paid and
nonassessable securities.

        (e) The Company shall pay when due and payable any and all federal and
state transfer taxes and charges that may be payable in respect of the issuance
or delivery of the Right Certificates or of any securities upon the exercise of
Rights. The Company shall not, however, be required to pay any transfer tax that
may be payable in respect of any transfer or delivery of a Right Certificate to
a Person other than, or the issuance or delivery of a certificate for securities
in respect of a name other than that of, the registered holder of the Right
Certificate representing Rights surrendered for exercise, or to issue or deliver
any certificate for securities upon the exercise of any Right until any such tax
shall have been paid (any such tax being payable by the holder of such Right
Certificate at the time of surrender) or until it has been established to the
Company's satisfaction that no such tax is due.



                                       24
<PAGE>   17

        (f) With respect to the Common Shares and/or other securities issuable
pursuant to Section 11(a)(ii) and (iii) hereof, the foregoing covenants shall be
applicable only upon and following the occurrence of a Section 11(a)(ii) Event.

        SECTION 10. SECURITIES RECORD DATE. Each Person in whose name any
certificate for securities of the Company is issued upon the exercise of Rights
shall for all purposes be deemed to have become the holder of record of the
securities represented thereby on, and such certificate shall be dated, the date
upon which the Right Certificate representing such Rights was duly surrendered
and payment of the Exercise Price (and any applicable transfer taxes) was made;
provided, however, that if the date of such surrender and payment is a date upon
which the securities transfer books of the Company are closed, such person shall
be deemed to have become the record holder of such securities on, and such
certificate shall be dated, the next succeeding Business Day on which the
securities transfer books of the Company are open.

        SECTION 11. ADJUSTMENT OF EXERCISE PRICE, NUMBER OF SHARES ISSUABLE UPON
        EXERCISE OF RIGHTS OR NUMBER OF RIGHTS.

        The Exercise Price, the number and kind of securities that may be
purchased upon exercise of a Right and the number of Rights outstanding are
subject to adjustment from time to time as provided in this Section 11.

               (a)(i) In the event that the Company shall at any time after the
        Close of Business on the Record Date and prior to the Close of Business
        on the earlier of the Redemption Date or the Rights Expiration Date (A)
        declare or pay any dividend on the Preferred Shares payable in Preferred
        Shares or Voting Shares, (B) subdivide the outstanding Preferred Shares,
        (C) combine the outstanding Preferred Shares into a smaller number of
        Preferred Shares or (D) issue Preferred Shares or other securities of
        the Company (other than those for which an adjustment is required under
        Section 11(b) hereof) in a reclassification of the Preferred Shares
        (including any such reclassification in connection with a consolidation
        or merger in which the Company is the continuing or surviving
        corporation) or in a reorganization of the Company, then, and upon each
        such event, the number and kind of Preferred Shares or other securities
        issuable upon the exercise of a Right on the date of such event shall be
        proportionately adjusted so that the holder of any Right exercised on or
        after such date shall be entitled to receive, upon the exercise thereof
        and payment of the Exercise Price, the aggregate number and kind of
        Preferred Shares or other securities or other property, as the case may
        be, that, if such Right had been exercised immediately prior to such
        date and at a time when such Right was exercisable and the transfer
        books of the Company were open, such holder would have owned upon such
        exercise and would have been entitled to receive by virtue of such
        dividend, subdivision, combination or reclassification. If an event
        occurs that would require an adjustment under both this Section 11(a)(i)
        and Section 11(a)(ii) hereof, the adjustment provided for in this
        Section 11(a)(i) shall be in addition to, and shall be made prior to,
        any adjustment required pursuant to Section 11(a)(ii) hereof.



                                       25
<PAGE>   18
               (ii) In the event that a 15% Ownership Date shall have occurred
        and neither the Redemption Date nor the Expiration Date shall have
        occurred prior to the tenth Business Day following such 15% Ownership
        Date (a "Section 11(a)(ii) Event"), then, and upon each such Section
        11(a)(ii) Event, proper provision shall be made so that, except as
        provided in Section 7(d) hereof, each holder of a Right shall thereafter
        have the right to receive, upon the exercise thereof in accordance with
        the terms of this Agreement and payment of the then current Exercise
        Price, such number of Common Shares of the Company as shall equal the
        result obtained by (A) multiplying the then current Exercise Price by
        the then number of one-hundredths of a Preferred Share for which a Right
        was exercisable immediately prior to such Section 11(a)(ii) Event (or,
        if the Distribution Date shall not have occurred prior to the date of
        such Section 11(a)(ii) Event, the number of one-hundredths of a
        Preferred Share for which a Right would have been exercisable if the
        Distribution Date had occurred on the Business Day immediately preceding
        the date of such Section 11(a)(ii) Event), and (B) dividing that product
        by 50% of the Current Market Price of a Common Share on the date of
        occurrence of the relevant Section 11(a)(ii) Event (such number of
        shares being hereinafter referred to as the "Adjustment Shares").
        Successive adjustments shall be made pursuant to this paragraph each
        time a Section 11(a)(ii) Event occurs.

               (iii) In the event that on the date of a Section 11(a)(ii) Event
        the aggregate number of Common Shares that are authorized by the
        Company's Certificate of Incorporation, as amended from time to time,
        but not outstanding or reserved for issuance for purposes other than
        upon exercise of the Rights is less than the aggregate number of
        Adjustment Shares thereafter issuable upon the exercise in full of the
        Rights in accordance with Section 11(a)(ii) hereof (the excess of such
        number of Adjustment Shares over and above such number of Common Shares
        being hereinafter referred to as the "Unavailable Adjustment Shares"),
        then, and upon each such event, the Company shall substitute for the pro
        rata portion of the Unavailable Adjustment Shares that would otherwise
        be issuable thereafter upon the exercise of each Right and payment of
        the Exercise Price (A) cash, (B) other equity securities of the Company
        (including, without limitation, shares of preferred stock of the Company
        or units of such shares having the same Current Market Price as one
        Common Share (a "Common Share Equivalent")), (C) debt securities of the
        Company, (D) other property or (E) any combination of the foregoing, in
        each case having an aggregate Current Market Price equal to the
        aggregate Current Market Price of the Unavailable Adjustment Shares for
        which substitution is made. Subject to Section 7(d) hereof, in the event
        that the Company takes any action pursuant to this Section 11(a)(iii),
        such action shall apply uniformly to all outstanding Rights.

        (b) In the event that the Company shall, at any time after the Close of
Business on the Record Date and prior to the Close of Business on the earlier of
the Redemption Date or the Rights Expiration Date, fix a record date for the
issuance of rights, options or warrants to all holders of Preferred Shares
entitling them initially to subscribe for or purchase Preferred Shares (or
shares having the same rights, privileges and preferences as the Preferred
Shares ("Preferred Share Equivalents")) or securities convertible into Preferred
Shares or Preferred Share 



                                       26
<PAGE>   19
Equivalents, at a price per Preferred Share or Preferred Share Equivalent (or
having a conversion price per share, if a security convertible into Preferred
Shares or Preferred Share Equivalents) less than the Current Market Price per
Preferred Share on such record date, then, and upon each such event, the
Exercise Price to be in effect after such record date shall be determined by
multiplying the Exercise Price in effect immediately prior to such record date
by a fraction, the numerator of which shall be equal to the sum of the number of
Preferred Shares outstanding on such record date plus the number of Preferred
Shares that the aggregate offering price of the total number of Preferred Shares
and/or Preferred Share Equivalents to be so offered (and/or the aggregate
initial conversion price of the convertible securities to be so offered) would
purchase at such Current Market Price, and the denominator of which shall be
equal to the number of Preferred Shares outstanding on such record date plus the
number of additional Preferred Shares and/or Preferred Share Equivalents to be
offered for subscription or purchase (or into which the convertible securities
to be so offered are initially convertible); provided, however, that if such
rights, options or warrants are not exercisable immediately upon issuance but
become exercisable only upon the occurrence of a specified event or the passage
of a specified period of time, then the adjustment to the Exercise Price shall
be made and become effective only upon the occurrence of such event or such
passage of time, and such adjustment shall be made as if the record date for the
issuance of such rights, options or warrants had been the Business Day
immediately preceding the date upon which such rights, options or warrants
became exercisable. Preferred Shares owned by or held for the account of the
Company shall not be deemed outstanding for the purpose of any such computation.
Such adjustment to the Exercise Price shall be made successively whenever such a
record date is fixed, and in the event that such rights or warrants are not so
issued, the Exercise Price shall be adjusted to be the Exercise Price that would
then be in effect if such record date had not been fixed.

        (c) In the event that the Company shall, at any time after the Close of
Business on the Record Date and prior to the Close of Business on the earlier of
the Redemption Date or the Rights Expiration Date, fix a record date for the
making of a distribution to all holders of the Preferred Shares (including any
such distribution made in connection with a consolidation or merger in which the
Company is the surviving corporation) of assets (other than a distribution for
which an adjustment is required under Section 11(a)(i) or (b) hereof or a
regular quarterly cash dividend), then the Exercise Price to be in effect after
such record date shall be determined by multiplying the Exercise Price in effect
immediately prior to such record date by a fraction, the numerator of which
shall be equal to the excess of the Current Market Price per Preferred Share on
such record date over and above the fair market value of the portion of the
securities or assets to be so distributed with respect to one Preferred Share,
and the denominator of which shall be equal to such Current Market Price per
Preferred Share. Such adjustments shall be made successively whenever such a
record date is fixed, and in the event that such a distribution is not so made,
the Exercise Price shall be adjusted to be the Exercise Price that would then be
in effect if such record date had not been fixed.

        (d) For the purpose of any computation under this Section 11, if the
Preferred Shares are not publicly held or traded, the "Current Market Price" per
Preferred Share shall be conclusively deemed to be the Current Market Price per
Common Share multiplied by 100.



                                       27
<PAGE>   20

        (e) No adjustment in the Exercise Price shall be required unless such
adjustment would require an increase or decrease of at least 1% in the then
current Exercise Price; provided, however, that any adjustments that by reason
of this Section 11(e) are not required to be made shall be cumulated and taken
into account in any subsequent adjustment. All calculations under this Section
11 shall be made to the nearest cent or to the nearest one-thousandth of a
Common Share or other share or one-millionth of a Preferred Share, as the case
may be.

        (f) If, as a result of an adjustment made pursuant to Section 11(a)
hereof, the holder of any Right shall, upon exercise thereof, be entitled to
receive any securities of the Company other than Preferred Shares, and if an
event occurs in respect of such securities that, if it were to occur in respect
of Preferred Shares, would require an adjustment under this Section 11 in
respect of Preferred Shares, then the number of such other securities so
receivable upon exercise of any Right shall be subject to adjustment from time
to time in a manner and on terms as nearly equivalent as practicable to the
provisions with respect to Preferred Shares contained in this Section 11, and
the other provisions of this Agreement with respect to Preferred Shares shall
apply on like terms to any such other securities.

        (g) All Rights originally issued by the Company subsequent to any
adjustment made to the Exercise Price hereunder shall represent the right to
purchase, at the adjusted Exercise Price, the number of one-hundredths of a
Preferred Share purchasable from time to time hereunder upon exercise of the
Rights, all subject to further adjustment as provided herein.

        (h) Unless the Company shall have exercised its election as provided in
Section 11(i) below, upon each adjustment of the Exercise Price as a result of
the calculations made in Sections 11(b) and (c) hereof, each Right outstanding
immediately prior to the making of such adjustment shall thereafter represent
the right to purchase, at the adjusted Exercise Price, that number of
one-hundredths of a Preferred Share (calculated to the nearest one-millionth of
a Preferred Share) obtained by multiplying (i) the number of one-hundredths of a
Preferred Share purchasable upon the exercise of one Right immediately prior to
such adjustment of the Exercise Price by (ii) the Exercise Price in effect
immediately prior to such adjustment, and dividing the product so obtained by
the Exercise Price in effect immediately after such adjustment.

        (i) The Company may elect, on or after the date of any adjustment of the
Exercise Price, to adjust the number of Rights instead of making any adjustment
in the number of Preferred Shares purchasable upon the exercise of a Right. Each
of the Rights outstanding after such adjustment of the number of Rights shall be
exercisable for the number of one-hundredths of a Preferred Share for which a
Right was exercisable immediately prior to such adjustment. Each Right held of
record prior to such adjustment of the number of Rights shall become that number
of Rights (calculated to the nearest one one-thousandth of a Right) obtained by
dividing the Exercise Price in effect immediately prior to the adjustment of the
Exercise Price by the Exercise Price in effect immediately after such adjustment
of the Exercise Price. The Company shall make a public announcement of its
election to adjust the number of Rights pursuant to this Section 11(i),
indicating the record date for the adjustment and, if known at the time, the
amount of the adjustment to be made. Such record date may be the date on which
the Exercise Price is adjusted or any day thereafter, but, if separate Right
Certificates have been issued, it shall be at 



                                       28
<PAGE>   21
least 10 days after the date of such public announcement. If separate Right
Certificates have been issued, upon each adjustment of the number of Rights
pursuant to this Section 11(i), the Company shall, as promptly as practicable,
cause to be distributed to holders of record of Right Certificates on such
record date Right Certificates representing, subject to Section 14 hereof, the
additional Rights to which such holders shall be entitled as a result of such
adjustment or, at the option of the Company, cause to be distributed to such
holders of record in substitution and replacement for the Right Certificates
held by such holders prior to the date of such adjustment, and upon surrender
thereof if required by the Company, new Right Certificates representing all the
Rights to which such holders shall be entitled after such adjustment. Right
Certificates to be so distributed shall be issued, executed and countersigned in
the manner provided for herein (and may bear, at the option of the Company, the
adjusted Exercise Price) and shall be registered in the names of the holders of
record of Right Certificates on the record date specified in the public
announcement.

        (j) Irrespective of any adjustment or change in the Exercise Price or
the number of one-hundredths of a Preferred Share issuable upon the exercise of
one Right, the Right Certificates theretofore and thereafter issued may continue
to express the Exercise Price per one one-hundredth of a Preferred Share and the
number of Preferred Shares issuable upon the exercise of one Right that were
expressed in the initial Right Certificates issued hereunder.

        (k) Before taking any action that would cause an adjustment reducing the
Exercise Price below one one-hundredth of the then par value, if any, of the
Preferred Shares issuable upon exercise of the Rights, the Company shall take
any corporate action that may, in the advice or opinion of its counsel, be
necessary in order that the Company may validly and legally issue fully paid and
nonassessable one one-hundredths of a Preferred Share at such adjusted Exercise
Price.

        (l) In any case in which this Section 11 shall require that an
adjustment in the Exercise Price be made effective as of a record date for a
specified event, the Company may elect to defer, until the occurrence of such
event, the issuance to the holder of any Right exercised after such record date
of the number of one-hundredths of a Preferred Share and other capital stock or
securities of the Company, if any, issuable upon such exercise over and above
the number of one-hundredths of a Preferred Share and other capital stock or
securities of the Company, if any, issuable upon such exercise on the basis of
the Exercise Price in effect prior to such adjustment; provided, however, that
the Company shall deliver to such holder a due bill or other appropriate
instrument representing such holder's right to receive such additional shares
upon the occurrence of the event requiring such adjustment.

        (m) Anything in this Section 11 to the contrary notwithstanding, the
Company shall be entitled to make such further adjustments in the number of
one-hundredths of a Preferred Share that may be purchased upon exercise of one
Right, and such further adjustments in the Exercise Price, in addition to those
adjustments expressly required by this Section 11, as and to the extent that the
Company in its sole discretion shall determine to be advisable in order that any
(i) consolidation or subdivision of the Preferred Shares, (ii) issuance wholly
for cash of any Preferred Shares at less than the Current Market Price thereof,
(iii) issuance wholly for cash of 



                                       29
<PAGE>   22
Preferred Shares or securities that by their terms are convertible into or
exchangeable for Preferred Shares, (iv) dividends on Preferred Shares payable in
Preferred Shares or (v) issuance of rights, options or warrants referred to in
Section 11(b) hereof, hereafter made by the Company to holders of its Preferred
Shares shall not be taxable to such stockholders.

        (n) In the event that the Company shall, at any time after the Close of
Business on the Record Date and prior to the Close of Business on the earliest
of the date of the first Section 11(a)(ii) Event, the date of the first Section
13(a) Event, the Redemption Date or the Rights Expiration Date, (i) pay any
dividend on the Common Shares payable in Common Shares, (ii) subdivide the
outstanding Common Shares, (iii) combine the outstanding Common Shares into a
smaller number of Common Shares or (iv) issue Common Shares in a
reclassification of the Common Shares (including any such reclassification in
connection with a consolidation or merger in which the Company is the continuing
or surviving corporation), then, and upon each such event, the Exercise Price to
be in effect after such event shall be determined by multiplying the Exercise
Price in effect immediately prior to such event by a fraction, the numerator of
which shall be equal to the number of Common Shares outstanding immediately
prior to such event and the denominator of which shall be equal to the number of
Common Shares outstanding immediately after such event. Successive adjustments
shall be made pursuant to this Section 11(n) each time such a dividend is paid
or such a subdivision, combination or reclassification is effected. If an event
occurs that would require an adjustment under both this Section 11(n) and
Section 11(a)(ii) hereof, the adjustment provided for in this Section 11(n)
shall be in addition to, and shall be made prior to, any adjustment required
pursuant to Section 11(a)(ii) hereof.

        SECTION 12. CERTIFICATE OF ADJUSTED EXERCISE PRICE OR NUMBER OF SHARES
        ISSUABLE UPON EXERCISE OF RIGHTS.

        Whenever an adjustment is made as provided in Section 11 hereof, the
Company shall promptly (a) prepare a certificate setting forth such adjustment
and a brief statement of the facts giving rise to such adjustment, (b) file with
the Rights Agent and with each transfer agent for the securities issuable upon
exercise of the Rights a copy of such certificate and (c) mail a brief summary
thereof to each holder of Rights in accordance with Section 25 hereof.
Notwithstanding the foregoing sentence, the failure of the Company to make such
certification or to give such notice shall not affect the validity or the force
and effect of such adjustment. Any adjustment to be made pursuant to Sections 11
or 13 hereof shall be effective as of the date of the event giving rise to such
adjustment. The Rights Agent shall be fully protected in relying on any such
certificate and on any adjustment therein contained, and shall not be obligated
or responsible for calculating any adjustment nor shall it be deemed to have
knowledge of such an adjustment unless and until it shall have received such
certificate.

        SECTION 13. CONSOLIDATION, MERGER OR SALE OR TRANSFER OF ASSETS OR
        EARNING POWER.

        (a) In the event (a "Section 13(a) Event") that, at any time on or after
the 15% Ownership Date and prior to the earlier of the Redemption Date or the
Rights Expiration 



                                       30
<PAGE>   23

Date, (1) the Company shall, directly or indirectly, consolidate with or merge
with and into any other Person and the Company shall not be the continuing or
surviving corporation in such consolidation or merger, (2) any Person shall,
directly or indirectly, consolidate with or merge with and into the Company and
the Company shall be the continuing or surviving corporation in such merger and,
in connection with such merger, all or part of the Common Shares shall be
changed into or exchanged for stock or other securities of any Person or cash or
any other property, or (3) the Company and/or any one or more of its
Subsidiaries shall, directly or indirectly, sell or otherwise transfer, in one
or more transactions (other than transactions in the ordinary course of
business), assets or earning power aggregating more than 50% of the assets or
earning power of the Company and its Subsidiaries (taken as a whole) to any
Person or Persons other than the Company or one or more of its wholly-owned
Subsidiaries (such Persons, together with the Persons described in clauses (1)
and (2) above shall be collectively referred to in this Section as the
"Surviving Person"), then, and in each such case, proper provision shall be made
so that:

               (i) except as provided in Section 7(d) hereof, each holder of a
        Right shall thereafter have the right to receive, upon the exercise
        thereof in accordance with the terms of this Agreement and payment of
        the then current Exercise Price, in lieu of the securities or other
        property otherwise purchasable upon such exercise, such number of
        validly authorized and issued, fully paid and nonassessable Common
        Shares of the Surviving Person (and if such Surviving Person has more
        than one class or series of Common Shares, such number of validly
        authorized and issued, fully paid and nonassessable Common Shares of
        each series or class) as shall be equal to a fraction, the numerator of
        which is:

                      (A) if a Section 11(a)(ii) Event has not occurred prior to
               such Section 13(a) Event, the product of the then current
               Exercise Price multiplied by the number of one-hundredths of a
               Preferred Share purchasable upon the exercise of one Right
               immediately prior to the first Section 13(a) Event (or, if the
               Distribution Date shall not have occurred prior to the date of
               such Section 13(a) Event, the number of one-hundredths of a
               Preferred Share that would have been so purchasable if the
               Distribution Date had occurred on the Business Day immediately
               preceding the date of such Section 13(a) Event), or

                      (B) if a Section 11(a)(ii) Event has occurred prior to
               such Section 13(a) Event, the product of the Exercise Price in
               effect immediately prior to such Section 11(a)(ii) Event
               multiplied by the number of one-hundredths of a Preferred Share
               purchasable upon the exercise of one Right immediately prior to
               such Section 11(a)(ii) Event (or, if the Distribution Date shall
               not have occurred prior to the date of such Section 11(a)(ii)
               Event, the number of one-hundredths of a Preferred Share that
               would have been so purchasable if the Distribution Date had
               occurred on the Business Day immediately preceding the date of
               such Section 11(a)(ii) Event),

        and the denominator of which is 50% of the Current Market Price per
        Common Share of 



                                       31
<PAGE>   24

        the Surviving Person on the date of consummation of such Section 13(a)
        Event;

               (ii) the Surviving Person shall thereafter be liable for and
        shall assume, by virtue of such consolidation, merger, sale or transfer,
        all the obligations and duties of the Company pursuant to this
        Agreement;

               (iii) the term "Company" shall thereafter be deemed to refer to
        the Surviving Person; and

               (iv) the Surviving Person shall take such steps (including, but
        not limited to, the reservation of a sufficient number of its Common
        Shares in accordance with Section 9 hereof) in connection with such
        consummation as may be necessary to ensure that the provisions hereof
        shall thereafter be applicable to its Common Shares thereafter
        deliverable upon the exercise of Rights.

        (b) Notwithstanding the foregoing, if the Section 13(a) Event is the
sale or transfer in one or more transactions of assets or earning power
aggregating more than 50% of the assets or earning power of the Company and its
Subsidiaries (taken as a whole), but less than 100% thereof, then each Person
acquiring all or a portion thereof shall assume the obligations of the Company
as to a fraction of each of the Rights equal to the fraction of the assets of
the Company and its Subsidiaries (taken as a whole) acquired by such Person, and
the obligations of the Company as to the remaining fraction of each of the
Rights shall continue to be the obligations of the Company.

        (c) The Company shall not consummate a Section 13(a) Event unless prior
thereto the Company and the Surviving Person shall have executed and delivered
to the Rights Agent a supplemental agreement confirming that such Surviving
Person shall, upon consummation of such Section 13(a) Event, assume this
Agreement in accordance with Section 13 hereof, that all rights of first refusal
or preemptive rights in respect of the issuance of Common Shares of such
Surviving Person upon exercise of outstanding Rights have been waived and that
such Section 13(a) Event shall not result in a default by such Surviving Person
under this Agreement, and further providing that, as soon as practicable after
the date of consummation of such Section 13(a) Event, such Surviving Person
shall:

               (i) prepare and file a registration statement under the
        Securities Act with respect to the Rights and the securities purchasable
        upon exercise of the Rights on an appropriate form, use its best efforts
        to cause such registration statement to become effective as soon as
        practicable after such filing, use its best efforts to cause such
        registration statement to remain effective (with a prospectus at all
        times meeting the requirements of the Securities Act) until the Rights
        Expiration Date, and similarly comply with all applicable state
        securities laws;

               (ii) use its best efforts to list (or continue the listing of)
        the Rights and the Common Shares of the Surviving Person purchasable
        upon exercise of the Rights on a national securities exchange, or use
        its best efforts to cause the Rights and such Common Shares to meet the
        eligibility requirements for quotation on NASDAQ; and



                                       32
<PAGE>   25

               (iii) deliver to holders of the Rights historical financial
        statements for such Surviving Person that comply in all respects with
        the requirements for registration on Form 10 (or any successor form)
        under the Exchange Act.

        (d) In the event that at any time after the occurrence of a Section
11(a)(ii) Event some or all of the Rights shall not have been exercised pursuant
to Section 11 hereof prior to the date of a Section 13(a) Event, such Rights
shall thereafter be exercisable only in the manner described in Section 13(a)
hereof. In the event that a Section 11(a)(ii) Event occurs on or after the date
of a Section 13(a) Event, Rights shall not be exercisable pursuant to Section 11
hereof but shall instead be exercisable pursuant to, and only pursuant to, this
Section 13.

        (e) The provisions of this Section 13 shall apply to each successive
merger, consolidation, sale or other transfer constituting a Section 13(a)
Event.

        SECTION 14. FRACTIONAL RIGHTS AND FRACTIONAL SHARES.

        (a) The Company shall not be required to issue fractions of Rights or to
distribute Right Certificates that represent fractional Rights. If the Company
shall determine not to issue such fractional Rights, the Company shall pay to
the registered holders of the Right Certificates with respect to which such
fractional Rights would otherwise be issuable, at the time such fractional
Rights would otherwise have been issued as provided herein, an amount in cash
equal to the same fraction of the Current Market Price of a whole Right on the
Business Day immediately prior to the date upon which such fractional Rights
would otherwise have been issuable.

        (b) The Company shall not be required to issue fractions of Common
Shares or Preferred Shares (other than fractions that are integral multiples of
one one-hundredth of a Preferred Share) upon exercise of Rights, or to
distribute certificates that represent fractional Common Shares or Preferred
Shares (other than fractions that are integral multiples of one one-hundredth of
a Preferred Share). Fractions of Preferred Shares in integral multiples of one
one-hundredth of a Preferred Share may, at the election of the Company, be
represented by depositary receipts, pursuant to an appropriate agreement between
the Company and a depositary selected by it, provided that such agreement shall
provide that the holders of such depositary receipts shall have all the rights,
privileges and preferences to which they are entitled as beneficial owners of
Preferred Shares. If the Company shall determine not to issue fractional Common
Shares or Preferred Shares (or depositary receipts in lieu of Preferred Shares),
the Company shall pay to the registered holders of Right Certificates with
respect to which such fractional Common Shares or Preferred Shares would
otherwise be issuable, at the time such Rights are exercised as provided herein,
an amount in cash equal to the same fraction of the Current Market Price of a
whole Common Share or Preferred Share, as the case may be. For purposes of this
Section 14(b), the Current Market Price of a whole Common Share or Preferred
Share shall be the Closing Price per share for the Trading Day immediately prior
to the date of such exercise.

        (c) The holder of a Right, by the acceptance of such Right, expressly
waives such holder's right to receive any fractional Rights or any fractional
Common Shares or Preferred Shares upon exercise of such Right, except as
permitted by this Section 14.



                                       33
<PAGE>   26

        SECTION 15. RIGHTS OF ACTION.

        All rights of action in respect of this Agreement, except the rights of
action given to the Rights Agent under Section 18 hereof, are vested in the
respective registered holders of the Right Certificates and certificates for
Common Shares representing Rights, and any registered holder of any Right
Certificate or of such certificate for Common Shares, without the consent of the
Rights Agent or of the holder of any other Right Certificate or any other
certificate for Common Shares may, in such holder's own behalf and for such
holder's own benefit, enforce, and may institute and maintain any suit, action
or proceeding against the Company to enforce, or otherwise act in respect of,
such holder's right to exercise the Rights represented by such Right Certificate
or by such certificate for Common Shares in the manner provided in such
Certificate and in this Agreement. Without limiting the foregoing or any
remedies available to the holders of Rights, it is specifically acknowledged
that the holders of Rights would not have an adequate remedy at law for any
breach of this Agreement and shall be entitled to specific performance, and
injunctive relief against actual or threatened violations, of the obligations of
any Person under this Agreement.

        SECTION 16. AGREEMENT OF RIGHT HOLDERS.

        Every holder of a Right, by accepting the same, consents and agrees with
the Company and the Rights Agent and every other holder of a Right that:

        (a) prior to the Distribution Date, the Rights shall be represented by
certificates for Common Shares registered in the name of the holders of such
Common Shares (which certificates for Common Shares shall also constitute Right
Certificates), and each such Right shall be transferable only in connection with
the transfer of such Common Shares;

        (b) after the Distribution Date, the Right Certificates shall only be
transferable on the registry books of the Rights Agent if surrendered at the
principal office of the Rights Agent, duly endorsed or accompanied by a proper
instrument of transfer; and

        (c) the Company and the Rights Agent may deem and treat the person in
whose name the Right Certificate is registered as the absolute owner thereof and
of the Rights represented thereby (notwithstanding any notations of ownership or
writing on the Right Certificate by anyone other than the Company or the Rights
Agent) for all purposes whatsoever, and neither the Company nor the Rights Agent
shall be affected by any notice to the contrary.

        SECTION 17. RIGHT HOLDER AND RIGHT CERTIFICATE HOLDER NOT DEEMED A
        STOCKHOLDER.

        No holder, as such, of any Right or Right Certificate shall be entitled
to vote, receive dividends or be deemed for any purpose the holder of the
securities of the Company that may at any time be issuable upon the exercise of
the Rights represented thereby, nor shall anything contained herein or in any
Right Certificate be construed to confer upon the holder of any Right or Right
Certificate, as such, any of the rights of a stockholder of the Company or any
right to vote for the election of directors or upon any matter submitted to
stockholders at any meeting 



                                       34
<PAGE>   27
thereof, to give or withhold consent to any corporate action, to receive notice
of meetings or other actions affecting stockholders (except as provided in
Section 25 hereof), or to receive dividends or subscription rights, or
otherwise, in each case until such Right or the Rights represented by such Right
Certificate shall have been exercised in accordance with the provisions hereof.

        SECTION 18. CONCERNING THE RIGHTS AGENT.

        (a) The Company agrees to pay to the Rights Agent reasonable
compensation for all services rendered by it hereunder and, from time to time,
on demand of the Rights Agent, its reasonable expenses and counsel fees and
disbursements and other disbursements incurred in the administration and
execution of this Agreement and the exercise and performance of its duties
hereunder. The Company also agrees to indemnify the Rights Agent for, and to
hold it harmless against, any loss, liability, or expense, incurred without
negligence, bad faith or willful misconduct on the part of the Rights Agent, for
anything done or omitted by the Rights Agent in connection with the acceptance
and administration of this Agreement, including the costs and expenses of
defending against any claim of liability. The costs and expenses of enforcing
this right of indemnification shall also be paid by the Company. The
indemnification provided for hereunder shall survive the expiration of the
Rights and the termination of this Agreement.

        (b) The Rights Agent may conclusively rely upon and shall be protected
and shall incur no liability for or in respect of any action taken, suffered or
omitted by it in connection with its administration of this Agreement in
reliance upon any Right Certificate or certificate for Preferred Shares or
Common Shares or for other securities of the Company, instrument of assignment
or transfer, power of attorney, endorsement, affidavit, letter, notice,
direction, consent, certificate, statement or other paper or document believed
by it to be genuine and to be signed, executed and, where necessary, verified or
acknowledged, by the proper person or persons, or otherwise upon the advice of
its counsel as set forth in Section 20 hereof.

        (c) Notwithstanding anything in this Agreement to the contrary, in no
event shall the Rights Agent be liable for special, indirect or consequential
loss or damage of any kind whatsoever (including but not limited to lost
profits), even if the Rights Agent has been advised of the likelihood of such
loss or damage and regardless of the form of the action.

        SECTION 19. MERGER OR CONSOLIDATION OR CHANGE OF NAME OF RIGHTS AGENT.

        (a) Any corporation into which the Rights Agent or any successor Rights
Agent may be merged or with which it may be consolidated, or any corporation
resulting from any merger or consolidation to which the Rights Agent or any
successor Rights Agent shall be a party, or any corporation succeeding to the
corporate trust or stock transfer business of the Rights Agent or any successor
Rights Agent, shall be the successor to the Rights Agent under this Agreement
without the execution or filing of any paper or any further act on the part of
any of the parties hereto, provided that such corporation would be eligible for
appointment as a successor Rights Agent under the provisions of Section 21
hereof. If, at the time such successor Rights Agent shall succeed to the agency
created by this Agreement, any of the Right Certificates shall have been
countersigned but not delivered, any such successor Rights Agent may adopt the



                                       35
<PAGE>   28

countersignature of the predecessor Rights Agent and deliver such Right
Certificates so countersigned; and if at that time any of the Right Certificates
shall not have been countersigned, any successor Rights Agent may countersign
such Right Certificates either in the name of the predecessor Rights Agent or in
the name of the successor Rights Agent; and in all such cases such Right
Certificates shall have the full force provided in such Right Certificate and in
this Agreement.

        (b) If at any time the name of the Rights Agent shall be changed, and at
such time any of the Right Certificates shall have been countersigned but not
delivered, the Rights Agent may adopt the countersignature under its prior name
and deliver Right Certificates so countersigned; and if at that time any of the
Right Certificates shall not have been countersigned, the Rights Agent may
countersign such Right Certificates either in its prior name or in its changed
name; and in all such cases such Right Certificates shall have the full force
provided in such Right Certificate and in this Agreement.

        SECTION 20. DUTIES OF RIGHTS AGENT.

        The Rights Agent undertakes the duties and obligations imposed by this
Agreement (and no implied duties or obligations shall be read into this
Agreement against the Rights Agent) upon the following terms and conditions, by
all of which the Company and the holders of Right Certificates, by their
acceptance of the Rights, shall be bound:

        (a) Before the Rights Agent acts or refrains from acting, it may consult
with legal counsel (who may be legal counsel for the Company), and the advice or
opinion of such counsel shall be full and complete authorization and protection
to the Rights Agent as to any action taken or omitted by it in good faith and in
accordance with such advice or opinion.

        (b) Whenever in the performance of its duties under this Agreement the
Rights Agent shall deem it necessary or desirable that any fact or matter be
proved or established by the Company prior to taking or suffering any action
hereunder, such fact or matter (unless other evidence in respect thereof be
herein specifically prescribed) may be deemed to be conclusively proved and
established by a certificate signed by any one of the Chairman of the Board, the
Vice Chairman of the Board, the President, any Vice President, the Treasurer,
the Secretary or any Assistant Secretary of the Company and delivered to the
Rights Agent; and such certificate shall be full authorization to the Rights
Agent for any action taken or suffered in good faith by it under the provisions
of this Agreement in reliance upon such certificate.

        (c) The Rights Agent shall be liable hereunder to the Company and any
other Person only for its own negligence, bad faith or willful misconduct.

        (d) The Rights Agent shall not be liable for or by reason of any of the
statements of fact or recitals contained in this Agreement, or in the Right
Certificates (except its countersignature thereof), or be required to verify the
same, but all such statements and recitals are and shall be deemed to have been
made by the Company only.

        (e) The Rights Agent shall not be under any responsibility in respect of
the validity of



                                       36
<PAGE>   29

this Agreement or the execution and delivery hereof (except the due
authorization, execution and delivery hereof by the Rights Agent) or in respect
of the validity or execution of any Right Certificate (except its
countersignature thereof); nor shall it be responsible for any breach by the
Company of any covenant or condition contained in this Agreement or in any Right
Certificate; nor shall it be responsible for any change in the exercisability of
the Rights (including any Rights becoming null and void pursuant to Section 7(d)
hereof) or any adjustment in the terms of the Rights (including the manner,
method or amount thereof) provided for in Sections 7, 11, 13 and 23 hereof, or
the ascertaining of the existence of facts that would require any such change or
adjustment (except with respect to the exercise of Rights represented by Right
Certificates after actual notice that such change or adjustment is required);
nor shall it by any act hereunder be deemed to make any representation or
warranty as to the authorization or reservation of any Preferred Shares or
Common Shares or other securities to be issued pursuant to this Agreement or any
Right Certificate, or as to whether any Preferred Shares or Common Shares or
other securities will, when issued, be validly authorized and issued, fully paid
and nonassessable.

        (f) The Company agrees that it will perform, execute, acknowledge and
deliver or cause to be performed, executed, acknowledged and delivered all such
further and other acts, instruments and assurances as may reasonably be required
by the Rights Agent for the carrying out or performing by the Rights Agent of
the provisions of this Agreement.

        (g) The Rights Agent is hereby authorized and directed to accept
instructions with respect to the performance of its duties hereunder from any
one of the Chairman of the Board, the Vice Chairman, the President, any Vice
President, the Chief Financial Officer, the Secretary or the Treasurer of the
Company, and to apply to such officers for advice or instructions in connection
with its duties, and it shall not be liable for any action taken or suffered to
be taken by it in good faith in accordance with instructions of any such officer
or for any delay in acting while waiting for those instructions. Any application
by the Rights Agent for written instructions from the Company may, at the option
of the Rights Agent, set forth in writing any action proposed to be taken or
omitted by the Rights Agent under this Agreement and the date on or after which
such action shall be taken or such omission shall be effective. The Rights Agent
shall not be liable for any action taken by, or omission of, the Rights Agent in
accordance with a proposal included in any such application on or after the date
specified in such application (which date shall not be less than ten Business
Days after the date any officer of the Company actually receives such
application, unless any such officer shall have consented in writing to an
earlier date) unless, prior to taking any such action (or the effective date in
the case of an omission), the Rights Agent shall have received written
instructions from the Company in response to such application to the contrary.

        (h) The Rights Agent and any stockholder, director, officer or employee
of the Rights Agent may buy, sell or deal in any of the Rights or other
securities of the Company or become pecuniarily interested in any transaction in
which the Company may be interested, or contract with or lend money to the
Company or otherwise act as fully and freely as though it were not the Rights
Agent under this Agreement. Nothing herein shall preclude the Rights Agent from
acting in any other capacity for the Company or for any other legal entity.



                                       37
<PAGE>   30

        (i) The Rights Agent may execute and exercise any of the rights or
powers hereby vested in it or perform any duty hereunder either itself or by or
through its attorneys or agents, and the Rights Agent shall not be answerable or
accountable for any act, default, neglect or misconduct of any such attorneys or
agents or for any loss to the Company resulting from any such act, default,
neglect or misconduct, provided that reasonable care was exercised in the
selection and continued employment thereof.

        (j) No provision of this Agreement shall require the Rights Agent to
expend or risk its own funds or otherwise incur any financial liability in the
performance of any of its duties hereunder or in the exercise of its rights if
there shall be reasonable grounds for believing that repayment of such funds or
adequate indemnification against such risk or liability is not reasonably
assured to it.

        (k) The Rights Agent shall not be required to take notice or be deemed
to have notice of any fact, event or determination (including, without
limitation, any dates or events defined in this Agreement or the designation of
any Person as a 15% Stockholder, Affiliate or Associate) under this Agreement
unless and until the Rights Agent shall be specifically notified in writing by
the Company of such fact, event or determination.

        (l) If, with respect to any Rights Certificate surrendered to the Rights
Agent for exercise or transfer, the certificate attached to the form of
assignment or form of election to purchase, as the case may be, has not been
completed, the Rights Agent shall not take any further action with respect to
such requested exercise or transfer without first consulting with the Company.

        SECTION 21. CHANGE OF RIGHTS AGENT.

        The Rights Agent or any successor Rights Agent may resign and be
discharged from its duties under this Agreement upon 30-days' notice in writing
mailed to the Company and to each transfer agent of the Common Shares and
Preferred Shares by registered or certified mail, and, at the expense of the
Company to the holders of the Right Certificates by first-class mail. The
Company may remove the Rights Agent or any successor Rights Agent upon 30-days'
notice in writing, mailed to the Rights Agent or successor Rights Agent, as the
case may be, and to each transfer agent of the Common Shares and Preferred
Shares by registered or certified mail, and to the holders of the Right
Certificates by first-class mail. If the Rights Agent shall resign or be removed
or shall otherwise become incapable of acting as such, the Company shall appoint
a successor to the Rights Agent. If the Company shall fail to make such
appointment within a period of 30 days after giving notice of such removal or
after it has been notified in writing of such resignation or incapacity by the
resigning or incapacitated Rights Agent or by the holder of a Right Certificate
(who shall, with such notice, submit such holder's Right Certificate for
inspection by the Company), then the Company shall become the Rights Agent and
the registered holder of any Right Certificate may apply to any court of
competent jurisdiction for the appointment of a new Rights Agent. Any successor
Rights Agent, whether appointed by the Company or by such a court, shall be a
corporation organized and doing business under the laws of the United States or
of the States of New York or California (or of any other state of the 



                                       38
<PAGE>   31
United States so long as such corporation is authorized to do business as a
banking institution in the States of New York or California), in good standing,
having a principal office in New York or California, that is authorized under
such laws to exercise corporate trust or stock transfer powers and is subject to
supervision or examination by federal or state authority and that has at the
time of its appointment as Rights Agent a combined capital and surplus of at
least $50,000,000. After appointment, the successor Rights Agent shall be vested
with the same powers, rights, duties and responsibilities as if it had been
originally named as Rights Agent without further act or deed; but the
predecessor Rights Agent shall deliver and transfer to the successor Rights
Agent any property at the time held by it hereunder, and execute and deliver any
further assurance, conveyance, act or deed necessary for the purpose of this
Agreement and so that the successor Rights Agent may appropriately act as Rights
Agent hereunder. Not later than the effective date of any such appointment, the
Company shall file notice thereof in writing with the predecessor Rights Agent
and each transfer agent of the Common Shares and Preferred Shares, and mail a
notice thereof in writing to the registered holders of the Right Certificates.
Failure to give any notice provided for in this Section 21, however, or any
defect therein, shall not affect the legality or validity of the resignation or
removal of the Rights Agent or the appointment of the successor Rights Agent, as
the case may be.

        SECTION 22. ISSUANCE OF NEW RIGHT CERTIFICATES.

        Notwithstanding any of the provisions of this Agreement or of the Right
Certificates to the contrary, the Company may, at its option, issue new Right
Certificates in such form as may be approved by the Board of Directors in order
to reflect any adjustment or change in the Exercise Price and the number or kind
or class of shares or other securities or property purchasable upon exercise of
the Rights in accordance with the provisions of this Agreement.

        SECTION 23. REDEMPTION OF RIGHTS.

        (a) Until the earliest of (i) the date of the first Section 11(a)(ii)
Event, (ii) the date of the first Section 13(a) Event or (iii) the Rights
Expiration Date, the Board of Directors of the Company may, at its option,
authorize and direct the redemption of all, but not less than all, of the then
outstanding Rights at a redemption price of $.001 per Right, as such redemption
price shall be appropriately adjusted to reflect any stock split, stock dividend
or similar transaction occurring after the date hereof (the "Redemption Price"),
and the Company shall so redeem the Rights.

        (b) Immediately upon the action of the Board of Directors of the Company
authorizing and directing the redemption of the Rights pursuant to subsection
(a) of this Section 23, or at such time and date thereafter as it may specify,
and without any further action and without any notice, the right to exercise
Rights shall terminate and the only right thereafter of the holders of Rights
shall be to receive the Redemption Price. Within ten (10) Business Days after
the date of such action, the Company shall give notice of such redemption to the
holders of Rights by mailing such notice to all holders of Rights at their last
addresses as they appear upon the registry books of the Rights Agent or, if
prior to the Distribution Date, on the registry books of the transfer agent for
the Common Shares. Any notice that is mailed in the manner herein 



                                       39
<PAGE>   32
provided shall be deemed given, whether or not the holder receives such notice,
but neither the failure to give any such notice nor any defect therein shall
affect the legality or validity of such redemption. Each such notice of
redemption shall state the method by which the payment of the Redemption Price
will be made. Neither the Company nor any of its Affiliates or Associates may,
directly or indirectly, redeem, acquire or purchase for value any Rights in any
manner other than that specifically set forth in Section 24 hereof or in this
Section 23, or in connection with the purchase of Common Shares prior to the
earlier of the date of the first Section 11(a)(ii) Event or the date of the
first Section 13(a) Event.

        (c) The Company may, at its option, pay the Redemption Price in cash,
Common Shares, Preferred Shares, other equity securities of the Company, debt
securities of the Company, other property or any combination of the foregoing,
in each case having an aggregate Current Market Price on the Redemption Date
equal to the Redemption Price.

        SECTION 24. EXCHANGE OF RIGHTS.

        (a) At any time during the period of 180 days after a Section 11(a)(ii)
Event, the Board of Directors of the Company may, at its option, authorize and
direct the exchange of all, but not less than all, of the then outstanding
Rights for Common Shares, one one-hundredths of Preferred Shares, debt
securities of the Company, other property, or any combination of the foregoing,
in each case having an aggregate Current Market Price equal to the result
obtained by (i) multiplying the Current Market Price per Common Share on the
record date for such exchange by the number of Common Shares for which a Right
is exercisable on such record date and (ii) subtracting from such product the
Exercise Price on such Record Date (the "Exchange Ratio"), and the Company shall
so exchange the Rights.

        (b) Immediately upon the action of the Board of Directors of the Company
authorizing and directing the exchange of the Rights pursuant to subsection (a)
of this Section 24, or at such time and date thereafter as it may specify, and
without any further action and without any notice, the right to exercise Rights
shall terminate and the only right thereafter of the holders of Rights shall be
to receive the securities described in Section 24(a) in accordance with the
Exchange Ratio. Within ten (10) Business Days after the date of such action, the
Company shall give notice of such exchange to the holders of Rights by mailing
such notice to all holders of Rights at their last addresses as they appear upon
the registry books of the Rights Agent or, if prior to the Distribution Date, on
the registry books of the transfer agent for the Common Shares. Any notice that
is mailed in the manner herein provided shall be deemed given, whether or not
the holder receives such notice, but neither the failure to give any such notice
nor any defect therein shall affect the legality or validity of such exchange.
Each such notice of exchange shall state the method by which the Rights will be
exchanged.

        (c) Notwithstanding the foregoing, in the event that the aggregate
number of Common Shares that are authorized by the Company's Certificate of
Incorporation, as amended from time to time, but not outstanding or reserved for
issuance for purposes other than upon exercise or exchange of the Rights is less
than the aggregate number of Common Shares issuable upon the exchange of the
Rights in accordance with this Section 24 (the excess of such number 



                                       40
<PAGE>   33
of authorized Common Shares over and above such number of issuable Common Shares
being hereinafter referred to as the "Unavailable Exchange Shares"), then the
Company shall substitute for the pro rata portion of the Unavailable Exchange
Shares that would otherwise be issuable upon the exchange of the Rights in
accordance with this Section 24 (i) cash, (ii) other equity securities of the
Company (including, without limitation, Common Share Equivalents), (iii) debt
securities of the Company, (iv) other property or (v) any combination of the
foregoing, in each case having an aggregate Current Market Price equal to the
aggregate Current Market Price of the Unavailable Exchange Shares for which
substitution is made. Subject to Section 7(d) hereof, in the event that the
Company takes any action pursuant to this Section 24, such action shall apply
uniformly to all outstanding Rights.

        SECTION 25. NOTICE OF CERTAIN EVENTS.

        (a) In the event that the Company shall propose (i) to declare or pay
any dividend on or make any distribution with respect to its Common Shares or
Preferred Shares (other than a regular quarterly cash dividend), (ii) to offer
to the holders of its Common Shares or Preferred Shares options, rights or
warrants to subscribe for or to purchase any additional shares thereof or shares
of stock of any class or any other securities, rights or options, (iii) to
effect any reclassification of its Common Shares or Preferred Shares (other than
a reclassification involving only the subdivision of outstanding shares), (iv)
to effect any consolidation or merger with or into, or to effect any sale or
other transfer (or to permit one or more of its Subsidiaries to effect any sale
or other transfer), in one or more transactions, of more than 50% of the assets
or earning power of the Company and its Subsidiaries (taken as a whole) to, any
other Person or Persons, or (v) to effect the liquidation, dissolution or
winding up of the Company, then and in each such case, the Company shall give to
each holder of a Right Certificate, in accordance with Section 26 hereof, a
notice of such proposed action that shall specify the record date for the
purpose of such dividend or distribution, or the date upon which such
reclassification, consolidation, merger, sale, transfer, liquidation,
dissolution or winding up is to take place and the date of participation therein
by the holders of record of the Common Shares or Preferred Shares, if any such
date is to be fixed, and such notice shall be so given in the case of any action
covered by clause (i) or (ii) above at least 20 days prior to the record date
for determining holders of the Common Shares or Preferred Shares for purposes of
such action, and in the case of any such other action, at least 20 days prior to
the date of the taking of such proposed action or the date of participation
therein by the holders of the Common Shares or Preferred Shares, whichever date
shall be the earlier. The failure to give the notice required by this Section 25
or any defect therein shall not affect the legality or validity of the action
taken by the Company or the vote upon any such action.

        (b) Upon the occurrence of each Section 11(a)(ii) Event and each Section
13(a) Event, the Company shall as soon as practicable thereafter give to each
holder of a Right Certificate, in accordance with Section 26 hereof, a notice of
the occurrence of such event, specifying the event and the consequences of the
event to holders of Rights under Sections 11 and 13 hereof.

        SECTION 26. NOTICES.



                                       41
<PAGE>   34

        Notices or demands authorized by this Agreement to be given or made by
the Rights Agent or by the holder of any Right Certificate to or on the Company
shall be sufficiently given or made if sent by first-class mail, postage
prepaid, addressed (until another address is filed in writing with the Rights
Agent) as follows:

                      ChromaVision Medical Systems, Inc.
                      33171 Paseo Cerveza
                      San Juan Capistrano, California  92675
                      Attention: Secretary

Subject to the provisions of Section 21 hereof, any notice or demand authorized
by this Agreement to be given or made to or on the Rights Agent (i) by the
Company shall be sufficiently given or made if sent, postage prepaid, by
registered or certified mail, addressed to the principal office of the Rights
Agent as set forth below (until another address is filed in writing with the
Company) or (ii) by the holder of any Right Certificate shall be sufficiently
given or made if sent by first-class mail, postage prepaid, addressed to the
principal office of the Rights Agent as set forth below (until another address
is filed in writing with the Company), and shall be deemed given upon actual
receipt. The Company hereby agrees that it shall encourage the holders of the
Right Certificates, in any and all writings to such holders regarding the Rights
or this Agreement, to give or make any notice or demand authorized by this
Agreement by registered or certified mail, addressed to the principal office of
the Rights Agent as follows (until another address is filed in writing with the
Company):

                      Harris Trust Company of California
                      601 South Figueroa
                      49th Floor
                      Los Angeles, California 90017

Notices or demands authorized by this Agreement to be given or made by the
Company or the Rights Agent to the holder of any Right Certificate shall be
sufficiently given or made if sent by first-class mail, postage prepaid,
addressed to such holder at the address of such holder as shown on the registry
books of the Company.

        SECTION 27. SUPPLEMENTS AND AMENDMENTS.

        (a) The Board of Directors of the Company may, from time to time,
without the approval of any holders of Rights, supplement or amend any provision
of this Agreement in any manner, whether or not such supplement or amendment is
adverse to any holder of Rights, and direct the Rights Agent so to supplement or
amend such provision, and the Rights Agent shall so supplement or amend such
provision; provided, however, that from and after the earliest of (i) the date
of the first Section 11(a)(ii) Event, (ii) the date of the first Section 13(a)
Event, (iii) the Redemption Date or (iv) the Expiration Date, this Agreement
shall not be supplemented or amended in any manner that would materially and
adversely affect any holder of outstanding Rights other than a 15% Stockholder
or a Surviving Person.

        (b) From and after the earlier of the date of the first Section
11(a)(ii) Event or the date 



                                       42
<PAGE>   35
of the first Section 13(a) Event and prior to the Rights Expiration Date, the
Company shall not effect any amendment to the Certificate of Designations for
the Preferred Shares that would materially and adversely affect the rights,
privileges or preferences of the Preferred Shares without the prior approval of
the holders of two-thirds or more of the then outstanding Rights.
Notwithstanding anything in this Agreement to the contrary, no supplement or
amendment that changes the rights and duties of the Rights Agent under this
Agreement in any manner adverse to the Rights Agent will be effective against
the Rights Agent without the execution of such supplement or amendment by the
Rights Agent.

        SECTION 28. CERTAIN COVENANTS.

        Subject to Section 27 hereof and the other provisions of this Agreement,
from and after the earlier of the date of the first Section 11(a)(ii) Event or
the date of the first Section 13(a) Event and prior to the earlier of the
Redemption Date or the Rights Expiration Date, the Company shall not (a) issue
or sell, or permit any Subsidiary to issue or sell, to a 15% Stockholder or a
Surviving Person, or any Affiliate or Associate of a 15% Stockholder or a
Surviving Person, or any Person holding Voting Shares of the Company that are
Beneficially Owned by a 15% Stockholder or a Surviving Person, (i) any rights,
options, warrants or convertible securities on terms similar to, or that
materially adversely affect the value of, the Rights or (ii) Preferred Shares,
Common Shares or shares of any other class of capital stock, if such sale is
intended to or would materially adversely affect the value of the Rights, or (b)
take any other action that is intended to or would materially adversely affect
the value of the Rights.

        SECTION 29. SUCCESSORS.

        All the covenants and provisions of this Agreement by or for the benefit
of the Company or the Rights Agent shall bind and inure to the benefit of their
respective successors and assigns hereunder.

        SECTION 30. BENEFITS OF THIS AGREEMENT.

        Nothing in this Agreement shall be construed to give to any Person other
than the Company, the Rights Agent and the registered holders of the Right
Certificates (other than those representing Rights that have become null and
void) and the certificates for Common Shares representing Rights (other than
those Rights that have become null and void) any legal or equitable right,
remedy or claim under this Agreement, and this Agreement shall be for the sole
and exclusive benefit of the Company, the Rights Agent and such registered
holders of Right Certificates and certificates for Common Shares representing
Rights.

        SECTION 31. SEVERABILITY.

        If any term, provision, covenant or restriction of this Agreement is
held by a court of competent jurisdiction or other authority to be invalid, void
or unenforceable, the remainder of the terms, provisions, covenants and
restrictions of this Agreement shall remain in full force and effect and shall
in no way be affected, impaired or invalidated.



                                       43
<PAGE>   36

        SECTION 32. GOVERNING LAW.

        This Agreement and each Right Certificate issued hereunder shall be
deemed to be a contract made under the laws of the State of Delaware and for all
purposes shall be governed by and construed in accordance with the laws of such
state applicable to contracts made and performed entirely within such state,
except as to the rights and obligations of the Rights Agent which shall be
governed by and construed in accordance with the laws of the State of Illinois.

        SECTION 33. COUNTERPARTS.

        This Agreement may be executed in any number of counterparts and each
such counterpart shall for all purposes be deemed to be an original and all such
counterparts shall together constitute but one and the same instrument.

        SECTION 34. DESCRIPTIVE HEADINGS.

        Descriptive headings of the several sections of this Agreement are
inserted for convenience only and shall not control or affect the meaning or
construction of any of the provisions hereof.



                                       44
<PAGE>   37
        IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed as of the day and year first above written.


                                       CHROMAVISION MEDICAL SYSTEMS, INC.

Attest:

By: ______________________________     By:  ____________________________________
    Name:                                   Name:
    Title:                                  Title:


                                       HARRIS TRUST COMPANY 
                                       OF CALIFORNIA,  as Rights Agent

Attest:

By: _______________________________     By:  ___________________________________
    Name:                                    Name:
    Title:                                   Title:



Exhibit A



                                       45
<PAGE>   38
                                    EXHIBIT A

                            Form of Right Certificate

Certificate No. _____                                          __________ Rights

        NOT EXERCISABLE AFTER THE LATER OF FEBRUARY 10, 2009 OR THE TENTH
        ANNIVERSARY OF THE DISTRIBUTION DATE (AS THAT TERM IS DEFINED IN THE
        RIGHTS AGREEMENT) OR EARLIER IF REDEEMED. THE RIGHTS ARE SUBJECT TO
        REDEMPTION AT $.001 PER RIGHT ON THE TERMS SET FORTH IN THE RIGHTS
        AGREEMENT. UNDER CERTAIN CIRCUMSTANCES, RIGHTS BENEFICIALLY OWNED BY A
        15% STOCKHOLDER OR AN AFFILIATE OR ASSOCIATE OF A 15% STOCKHOLDER (AS
        SUCH TERMS ARE DEFINED IN THE RIGHTS AGREEMENT AND AS THOSE
        CIRCUMSTANCES ARE SPECIFIED IN THE RIGHTS AGREEMENT) OR ANY SUBSEQUENT
        HOLDER OF SUCH RIGHTS MAY BECOME NULL AND VOID. [THE RIGHTS REPRESENTED
        BY THIS RIGHT CERTIFICATE WERE ISSUED TO A PERSON WHO WAS A 15%
        STOCKHOLDER OR AN AFFILIATE OR ASSOCIATE OF A 15% STOCKHOLDER. THIS
        RIGHT CERTIFICATE AND THE RIGHTS REPRESENTED HEREBY MAY BECOME VOID IN
        THE CIRCUMSTANCES SPECIFIED IN THE RIGHTS AGREEMENT.]*




- ----------

*       That portion of the legend in brackets shall be inserted only if
        applicable and shall replace the preceding sentence.


<PAGE>   39
                                Right Certificate

                       CHROMAVISION MEDICAL SYSTEMS, INC.



        This certifies that _______________________, or registered assigns, is
the registered owner of the number of Rights set forth above, each of which
entitles the owner thereof, subject to the terms, provisions and conditions of
the Rights Agreement dated as of February 10, 1999 (the "Rights Agreement")
between ChromaVision Medical Systems, Inc., a Delaware corporation (the
"Company"), and Harris Trust Company of California (the "Rights Agent"), to
purchase from the Company at any time after the Distribution Date (as such term
is defined in the Rights Agreement) and prior to 5:00 P.M., California time, on
the later of February 10, 2009 or the tenth anniversary of the Distribution Date
at the office or agency of the Rights Agent at Harris Trust Company of
California, 601 South Figueroa, 49th Floor, Los Angeles, California 90017, or at
the office of its successors as Rights Agent, one one-hundredth of a fully paid
non-assessable share of Series C Preferred Stock, $.01 par value (the "Preferred
Shares"), of the Company, at an exercise price of $30.00 per Right (the
"Exercise Price"), upon presentation and surrender of this Right Certificate
with the Form of Election to Purchase duly executed. The number of Rights
evidenced by this Right Certificate (and the number of Preferred Shares that may
be purchased upon exercise thereof) set forth above, and the Exercise Price per
share set forth above, are the number and Exercise Price as of February 10,
1999, based on the Preferred Shares as constituted at such date.

        As provided in the Rights Agreement, the Exercise Price and the number
of Preferred Shares that may be purchased upon the exercise of the Rights
evidenced by this Right Certificate are subject to modification and adjustment
upon the happening of certain events. This Right Certificate is subject to all
of the terms, provisions and conditions of the Rights Agreement, which terms,
provisions and conditions are hereby incorporated herein by reference and made a
part hereof and to which Rights Agreement reference is hereby made for a full
description of the rights, limitations of rights, obligations, duties and
immunities hereunder of the Rights Agent, the Company and the holders of the
Rights Certificates. Copies of the Rights Agreement are on file at the principal
executive offices of ChromaVision Medical Systems, Inc. and the above-mentioned
offices of the Rights Agent.

        This Right Certificate, with or without other Right Certificates, upon
surrender at the office or agency of the Rights Agent at Harris Trust Company of
California, 601 South Figueroa, 49th Floor, Los Angeles, California 90017, may
be exchanged for another Right Certificate or Right Certificates of like tenor
and date evidencing Rights entitling the holder to purchase a like aggregate
number of Preferred Shares as the Rights evidenced by the Right Certificate or
Right Certificates surrendered shall have entitled such holder to purchase. If
this Right Certificate shall be exercised in part, the holder shall be entitled
to receive upon surrender hereof another Right Certificate or Right Certificates
for the number of whole Rights not exercised. Subject to the provisions of the
Rights Agreement, the Rights evidenced by this Certificate may, but are not
required to, be redeemed by the Company at a redemption price of $.001 per
Right.







                                       47
<PAGE>   40
        No fractional Preferred Shares will be issued upon the exercise of any
Right or Rights evidenced hereby (other than fractions that are integral
multiples of one one-hundredth of a Preferred Share, which may, at the election
of the Company, be evidenced by depositary receipts), but in lieu thereof, a
cash payment will be made, as provided in the Rights Agreement.

        No holder of this Right Certificate shall be entitled to vote or receive
dividends or be deemed for any purpose the holder of the Preferred Shares or of
any other securities of the Company that may at any time be issuable on the
exercise hereof, nor shall anything contained in the Rights Agreement or herein
be construed to confer upon the holder hereof, as such, any of the rights of a
stockholder of the Company or any right to vote for the election of directors or
upon any matter submitted to stockholders at any meeting thereof, or to give or
withhold consent to any corporate action, or to receive notice of meetings or
other actions affecting stockholders (except as provided in the Rights
Agreement), or to receive dividends or subscription rights, or otherwise, until
the Right or Rights evidenced by this Right Certificate shall have been
exercised as provided in the Rights Agreement.

        This Right Certificate shall not be valid or obligatory for any purpose
until it shall have been countersigned by the Rights Agent.

        WITNESS the facsimile signature of the proper officers of the Company
and its corporate seal. Dated as of _______________.



ATTEST:                                CHROMAVISION MEDICAL SYSTEMS, INC.


__________________________________     _________________________________________
Secretary                              President

Countersigned:

HARRIS TRUST COMPANY OF CALIFORNIA,
as Rights Agent


By:
Title:



                                       48
<PAGE>   41
                    Form of Reverse Side of Right Certificate

                               FORM OF ASSIGNMENT

             (To be executed by the registered holder if such holder
                   desires to transfer the Right Certificate.)

        FOR VALUE RECEIVED _______________________________________ hereby sells,
assigns and transfers unto ___________________________________________________



________________________________________________________________________________
                  (Please print name and address of transferee)

______________________________________________________________________________
this Right Certificate, together with all right, title and interest therein, and
does hereby irrevocably constitute and appoint ___________________________
Attorney, to transfer the within Right Certificate on the books of the
within-named Company, with full power of substitution.

Dated:  ____________________, ____

                                       _________________________________________
                                       Signature

Signature Guaranteed:

        Signatures must be guaranteed by a member firm of a registered national
securities exchange, a member of the National Association of Securities Dealers,
Inc. or a commercial bank or trust company having an office or correspondent in
the United States.



________________________________________________________________________________


The undersigned hereby certifies that the Rights evidenced by this Right
Certificate are not Beneficially Owned by a 15% Stockholder or an Affiliate or
Associate thereof (as defined in the Rights Agreement).

                                       _________________________________________
                                       Signature

                                       (Signature must conform in all
                                       respects to name of holder as
                                       specified on the face of this Right
                                       Certificate in every particular,
                                       without alteration or enlargement or
                                       any change whatsoever)



                                       49
<PAGE>   42

             Form of Reverse Side of Right Certificate -- continued

                          FORM OF ELECTION TO PURCHASE

                      (To be executed if holder desires to
                        exercise the Right Certificate.)


TO CHROMAVISION MEDICAL SYSTEMS, INC.

        The undersigned hereby irrevocably elects to exercise___________________
____________________Rights represented by this Right Certificate to purchase the
Preferred Shares or other securities issuable upon the exercise of such Rights
and requests that certificates for such Preferred Shares or other securities be
issued in the following name:

                        (please print name, address and social security, tax
                        identification or other identifying number:


If such number of Rights shall not be all the Rights evidenced by this Right
Certificate, a new Right Certificate for the balance remaining of such Rights
shall be registered in the name of and delivered to:

                        (please print name, address and social security, tax
                        identification or other identifying number:



Dated:                              

                                       _________________________________________
                                       Signature

                                       (Signature must conform in all
                                       respects to name of holder as
                                       specified on the face of this Right
                                       Certificate in every particular,
                                       without alteration or enlargement or
                                       any change whatsoever)




                                       50
<PAGE>   43

             Form of Reverse Side of Right Certificate -- continued

Signature Guarantee:

        Signatures must be guaranteed by a member firm of a registered national
securities exchange, a member of the National Association of Securities Dealers,
Inc. or a commercial bank or trust company having an office or correspondent in
the United States.


________________________________________________________________________________

The undersigned hereby certifies that the Rights evidenced by this Right
Certificate are not Beneficially Owned by a 15% Stockholder or an Affiliate or
Associate thereof (as defined in the Rights Agreement).

                                       _________________________________________
                                       Signature

                                       (Signature must conform in all
                                       respects to name of holder as
                                       specified on the face of this Right
                                       Certificate in every particular,
                                       without alteration or enlargement or
                                       any change whatsoever)

________________________________________________________________________________

                                     NOTICE

        The signatures in the foregoing Forms of Assignment and Election must
correspond to the name as written upon the face of this Right Certificate in
every particular, without alteration or enlargement or any change whatsoever.

        In the event the certification set forth above in the Forms of
Assignment and Election is not completed, the Company will deem the Beneficial
Owner of the Rights evidenced by this Right Certificate to be a 15% Stockholder
or an Affiliate or Associate thereof (as defined in the Rights Agreement) and,
in the case of an Assignment, will affix a legend to that effect on any Right
Certificates issued in exchange for this Right Certificate.



                                       51

<PAGE>   1
                                   EXHIBIT 4.3

                           CERTIFICATE OF DESIGNATIONS



52
<PAGE>   2
                           CERTIFICATE OF DESIGNATIONS

                                       OF

                            SERIES C PREFERRED STOCK

                           (PAR VALUE $.01 PER SHARE)

                                       OF

                       CHROMAVISION MEDICAL SYSTEMS, INC.



                         PURSUANT TO SECTION 151 OF THE
                GENERAL CORPORATION LAW OF THE STATE OF DELAWARE



        ChromaVision Medical Systems, Inc., a Delaware corporation (the
"Corporation"), certifies that pursuant to the authority conferred upon the
Board of Directors of the Company (the "Board of Directors") by the Certificate
of Incorporation of the Company (the "Certificate of Incorporation"), and in
accordance with the provisions of Section 151 of the General Corporation Law of
the State of Delaware, as amended (the "GCL"), the Board of Directors, on
February 10, 1999, adopted the following resolution creating a series of its
Preferred Stock, par value $.01 per share:

        RESOLVED, that (1) pursuant to the authority conferred upon the Board of
Directors of the Corporation by the Certificate of Incorporation of the
Corporation, the Board of Directors hereby designates 200,000 shares of the
preferred stock, par value $.01 per share, of the Corporation as "Series C
Preferred Stock" (the "Preferred Shares"), and the powers, designations,
preferences and relative, participating, optional and other rights of the
Preferred Shares and the qualifications, limitations and restrictions thereof,
be, and they hereby are, as set forth below (the "Certificate of Designations")
and (2) in connection therewith, the officers of the Corporation be, and each of
them hereby is, authorized, empowered and directed on behalf of the Corporation
and in its name to execute and file the Certificate of Designations with the
Delaware Secretary of State:

        Section 1. Designation and Amount. The shares of such series shall be
designated as "Series C Preferred Stock" and the number of shares constituting
such series so designated shall be 200,000 (the "Series C Preferred Stock").
Such number of shares may be increased or decreased by resolution of the Board
of Directors; provided, however, that no decrease shall reduce the number of
shares of Series C Preferred Stock to a number less than the number of shares
then outstanding plus the number of shares reserved for issuance upon the
exercise of outstanding options, rights or warrants or upon the conversion of
any outstanding securities issued by the Corporation convertible into Series C
Preferred Stock.

        Section 2. Dividends and Distributions.



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<PAGE>   3

        (a) Subject to the rights of the holders of any shares of any series of
Preferred Stock (or any similar stock) ranking prior and superior to the Series
C Preferred Stock with respect to dividends, the holders of shares of Series C
Preferred Stock, in preference to the holders of shares of Common Stock, par
value $.01 per share (the "Common Stock"), of the Corporation, and of any other
junior stock, shall be entitled to receive, when, as and if declared by the
Board of Directors out of funds legally available for the purpose, quarterly
dividends payable in cash on the first day of March, June, September and
December in each year (each such date being referred to herein as a "Quarterly
Dividend Payment Date"), commencing on the first Quarterly Dividend Payment Date
after the first issuance of a share or fraction of a share of Series C Preferred
Stock, in an amount per share (rounded to the nearest cent) equal to the greater
of (i) $.25 per share ($1.00 per annum) or (ii) subject to the provision for
adjustment hereinafter set forth, 100 times the aggregate per share amount of
all cash dividends, and 100 times the aggregate per share amount (payable in
kind) of all non-cash dividends or other distributions, other than a dividend
payable in shares of Common Stock or a subdivision of the outstanding shares of
Common Stock (by reclassification or otherwise), declared on the Common Stock
since the immediately preceding Quarterly Dividend Payment Date or, with respect
to the first Quarterly Dividend Payment Date, since the first issuance of any
share or fraction of a share of Series C Preferred Stock. In the event the
Corporation shall at any time declare or pay any dividend on the Common Stock
payable in shares of Common Stock, or effect a subdivision or combination or
consolidation of the outstanding shares of Common Stock (by reclassification or
otherwise than by payment of a dividend in shares of Common Stock) into a
greater or lesser number of shares of Common Stock, then in each such event the
amount to which the holder of each share of Series C Preferred Stock was
entitled immediately prior to such event under clause (ii) of the preceding
sentence shall be adjusted by multiplying such amount by a fraction, the
numerator of which is the number of shares of Common Stock outstanding
immediately after such event and the denominator of which is the number of
shares of Common Stock outstanding immediately prior to such event.

        (b) The Corporation shall declare a dividend or distribution on the
Series C Preferred Stock as provided in paragraph (a) of this Section 2
immediately after it declares a dividend or distribution on the Common Stock
(other than a dividend payable in shares of Common Stock); provided, however,
that, in the event no dividend or distribution shall have been declared on the
Common Stock during the period between any Quarterly Dividend Payment Date and
the next subsequent Quarterly Dividend Payment Date, a dividend of $.25 per
share ($1.00 per annum) on the Series C Preferred Stock shall nevertheless be
payable on such subsequent Quarterly Dividend Payment Date.

        (c) Dividends shall begin to accrue and be cumulative on outstanding
shares of Series C Preferred Stock from the Quarterly Dividend Payment Date next
preceding the date of issue of such shares, unless the date of issue of such
shares is prior to the record date for the first Quarterly Dividend Payment
Date, in which event dividends on such shares shall begin to accrue from the
date of issue of such shares, or unless the date of issue is a Quarterly
Dividend Payment Date or is a date after the record date for the determination
of holders of shares of Series C Preferred Stock entitled to receive a quarterly
dividend and before such Quarterly Dividend Payment Date, in either of which
events such dividends shall begin to accrue and be cumulative 



54
<PAGE>   4

from such Quarterly Dividend Payment Date. Accrued but unpaid dividends shall
cumulate but shall not bear interest. Dividends paid on the shares of Series C
Preferred Stock in an amount less than the total amount of such dividends at the
time accrued and payable on such shares shall be allocated pro rata on a
share-by-share basis among all such shares at the time outstanding. The Board of
Directors may fix a record date for the determination of holders of shares of
Series C Preferred Stock entitled to receive payment of a dividend or
distribution declared thereon, which record date shall be not more than 60 days
prior to the date fixed for the payment thereof.

        Section 3. Voting Rights. The holders of shares of Series C Preferred
Stock shall have the following voting rights:

        (a) Subject to the provision for adjustment hereinafter set forth, each
share of Series C Preferred Stock shall entitle the holder thereof to 100 votes
on all matters submitted to a vote of the stockholders of the Corporation. In
the event the Corporation shall at any time declare or pay any dividend on the
Common Stock payable in shares of Common Stock, or effect a subdivision or
combination or consolidation of the outstanding shares of Common Stock (by
reclassification or otherwise than by payment of a dividend in shares of Common
Stock) into a greater or lesser number of shares of Common Stock, then in each
such case the number of votes per share to which holders of shares of Series C
Preferred Stock were entitled immediately prior to such event shall be adjusted
by multiplying such number by a fraction, the numerator of which is the number
of shares of Common Stock outstanding immediately after such event and the
denominator of which is the number of shares of Common Stock outstanding
immediately prior to such event.

        (b) Except as otherwise provided herein, in the Corporation's
Certificate of Incorporation, as amended (the "Charter"), in any other
certificate of designations creating a series of Preferred Stock or any similar
stock or by law, the holders of shares of Series C Preferred Stock and the
holders of shares of Common Stock and any other capital stock of the Corporation
having general voting rights shall vote together as one class on all matters
submitted to a vote of stockholders of the Corporation.

        (c) Except as set forth herein, or as otherwise provided by law, holders
of Series C Preferred Stock shall have no special voting rights and their
consent shall not be required (except to the extent they are entitled to vote
with holders of Common Stock as set forth herein) for taking any corporate
action.

        Section 4. Certain Restrictions.

        (a) Whenever quarterly dividends or other dividends or distributions
payable on the Series C Preferred Stock as provided in Section 2 are in arrears,
thereafter and until all accrued and unpaid dividends and distributions, whether
or not authorized or declared, on shares of Series C Preferred Stock outstanding
shall have been paid in full, the Corporation shall not, directly or indirectly:

               (i) authorize, declare or pay dividends on, or make any other
distributions 



55
<PAGE>   5

with respect to, any shares of stock ranking junior (either as to dividends or
upon liquidation, dissolution or winding up) to the Series C Preferred Stock;

              (ii) authorize, declare or pay dividends on, or make any other
distributions with respect to, any shares of stock ranking on a parity (either
as to dividends or upon liquidation, dissolution or winding up) with the Series
C Preferred Stock, except dividends paid ratably on the Series C Preferred Stock
and all such parity stock on which dividends are payable or in arrears in
proportion to the total amounts to which the holders of all such shares are then
entitled;

             (iii) redeem or purchase or otherwise acquire for consideration
shares of any stock ranking junior (either as to dividends or upon liquidation,
dissolution or winding up) to the Series C Preferred Stock, provided that the
Corporation may at any time redeem, purchase or otherwise acquire shares of any
such junior stock in exchange for shares of any stock of the Corporation ranking
junior (either as to dividends or upon liquidation, dissolution or winding up)
to the Series C Preferred Stock; or

              (iv) redeem or purchase or otherwise acquire for consideration any
shares of Series C Preferred Stock, or any shares of stock ranking on a parity
with the Series C Preferred Stock, except in accordance with a purchase offer
made in writing or by publication (as determined by the Board of Directors) to
all holders of such shares upon such terms as the Board of Directors, after
consideration of the respective annual dividend rates and other relative rights
and preferences of the respective series and classes, shall determine in good
faith will result in fair and equitable treatment among the respective series or
classes.

        (b) The Corporation shall not permit any subsidiary of the Corporation
to purchase or otherwise acquire for consideration, directly or indirectly, any
shares of stock of the Corporation unless the Corporation could, under paragraph
(a) of this Section 4, purchase or otherwise acquire such shares at such time
and in such manner.

        Section 5. Reacquired Shares. Any shares of Series C Preferred Stock
purchased or otherwise acquired by the Corporation in any manner whatsoever
shall be retired and canceled promptly after the acquisition thereof. All such
shares shall upon their cancellation become authorized but unissued shares of
Preferred Stock and may be reissued as part of a new series of Preferred Stock
subject to the conditions and restrictions on issuance set forth herein, in the
Charter, in any other certificate of designations creating a series of Preferred
Stock or any similar stock or as otherwise required by law.

        Section 6. Liquidation, Dissolution or Winding Up. Upon any liquidation,
dissolution or winding up of the Corporation, no distribution shall be made to:
(i) the holders of shares of stock ranking junior (either as to dividends or
upon liquidation, dissolution or winding up) to the Series C Preferred Stock
unless, prior thereto, the holders of shares of Series C Preferred Stock shall
have received the greater of (A) $100.00 per share ($1.00 per one one-hundredth
of a share), plus an amount equal to accrued and unpaid dividends and
distributions thereon, whether or not declared, to the date of such payment, or
(B) an aggregate amount per share, subject to the provision for adjustment
hereinafter set forth, equal to 100 times the aggregate amount to be 



                                       56
<PAGE>   6

distributed per share of Common Stock to holders thereof; or (ii) the holders of
shares of stock ranking on a parity (either as to dividends or upon liquidation,
dissolution or winding up) with the Series C Preferred Stock, except
distributions made ratably on the Series C Preferred Stock and all such parity
stock in proportion to the total amounts to which the holders of all such shares
are entitled upon such liquidation, dissolution or winding up. In the event the
Corporation shall at any time declare or pay any dividend on the Common Stock
payable in shares of Common Stock, or effect a subdivision or combination or
consolidation of the outstanding shares of Common Stock (by reclassification or
otherwise than by payment of a dividend in shares of Common Stock) into a
greater or lesser number of shares of Common Stock, then in each such event the
aggregate amount to which each holder of a share of Series C Preferred Stock was
entitled immediately prior to such event under clause (i) of the preceding
sentence shall be adjusted by multiplying such amount by a fraction, the
numerator of which is the number of shares of Common Stock outstanding
immediately after such event and the denominator of which is the number of
shares of Common Stock outstanding immediately prior to such event.

        Section 7. Consolidation, Merger or Other. In the event the Corporation
shall enter into any consolidation, merger, combination or other transaction in
which the shares of Common Stock are exchanged for or changed into other stock
or securities, cash and/or any other property or otherwise changed, then in any
such event each share of Series C Preferred Stock shall at the same time be
similarly exchanged or changed into an amount per share, subject to the
provision for adjustment hereinafter set forth, equal to 100 times the aggregate
amount of stock, securities, cash and/or any other property (payable in kind),
as the case may be, into which or for which each share of Common Stock is
changed or exchanged. In the event the Corporation shall at any time declare or
pay any dividend on the Common Stock payable in shares of Common Stock, or
effect a subdivision or combination or consolidation of the outstanding shares
of Common Stock (by reclassification or otherwise than by payment of a dividend
in shares of Common Stock) into a greater or lesser number of shares of Common
Stock, then in each such event the amount set forth in the preceding sentence
with respect to the exchange or change of shares of Series C Preferred Stock
shall be adjusted by multiplying such amount by a fraction, the numerator of
which is the number of shares of Common Stock outstanding immediately after such
event, and the denominator of which is the number of shares of Common Stock
outstanding immediately prior to such event.

        Section 8. No Redemption. The shares of Series C Preferred Stock shall
not be redeemable.

        Section 9. Rank. The Series C Preferred Stock shall rank, with respect
to the payment of dividends and the distribution of assets, junior to all series
or Classes of the Corporation's Preferred Stock whether issued before or after
the issuance of the Series C Preferred Stock.

        Section 10. Amendment. The Charter shall not be amended in any manner
that would materially alter or change the powers, preferences or special rights
of the Series C Preferred Stock, as set forth herein, so as to affect them
adversely without the affirmative vote of the holders of at least two-thirds of
the outstanding shares of Series C Preferred Stock, voting together as a single
Series.



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<PAGE>   7

        IN WITNESS WHEREOF, ChromaVision Medical Systems, Inc. has caused this
Certificate of Designations to be executed on its behalf this 8th day of March,
1999.

                                       CHROMAVISION MEDICAL SYSTEMS, INC.



                                       By:
                                          Douglas S. Harrington, M.D.
                                          Chief Executive Officer


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