Document:

Exhibit 4.1
                         2000 STOCK COMPENSATION PLAN I

         THIS STOCK COMPENSATION PLAN I adopted this 1st day of March, 2000, by
MIRACOR DIAGNOSTICS, INC., a Utah corporation with its principal place of
business being located at 9191 Towne Centre Drive - Suite 420, San Diego,
California 92122.

                                   WITNESSETH:

         WHEREAS, the Board of Directors of Miracor Diagnostics, Inc., (the
"Company") has determined that it would be to its advantage, and in its best
interests, to grant certain consultants and advisors, as well as certain
employees the opportunity to purchase stock in the Company as a result of
compensation for their service; and

         WHEREAS, the Board of Directors (the "Board") believes that the Company
can best obtain advantageous benefits by issuing stock to such designated
individuals from time to time.

         NOW THEREFORE, the Board adopts this as the 2000 Stock Compensation
Plan I (the "Plan").

1.00     EFFECTIVE DATE AND TERMINATION OF PLAN
         --------------------------------------
         The effective date of the Plan is October 1, 2000, which is the day the
Plan was adopted by the Board. The Plan will terminate on the earlier of the
date of the grant of the final option for last common stock allocated under the
Plan or five years from the date thereof, whichever is earlier.

2.00     ADMINISTRATION OF PLAN
         ----------------------
         The Plan shall be administered by the Board, which may adopt such rules
and regulations for its administration as it may deem necessary or appropriate,
or may be administered by a Compensation Committee to be appointed by the Board,
to have such composition and duties as the Board may from time to time
determine.

3.00     ELIGIBILITY TO PARTICIPATE IN THE PLAN
         --------------------------------------
         3.01 Subject to the provisions of the Plan, the Board, or its designee,
shall determine and designate, from time to time those consultants, advisors,
and employees of the Company, or consultants, advisors, and employees of a
parent or subsidiary corporation of the Company, to whom shares are to be issued
hereunder and the number of shares to be issued from time to time to any
individual or entity. In determining the eligibility of an individual or entity
to receive shares, as well as in determining the number of shares to be issued
to any individual or entity, the Board, or its designee, shall consider the
nature and value to the Company for the services which have been rendered to the
Company and such other factors as the Board, or its designee, may deem relevant.

         3.02 To be eligible to be selected to receive stock, an individual must
be a consultant, advisor or an employee of the Company or a consultant, advisor,
or an employee of a parent or subsidiary Corporation of the Company. The
issuance of stock shall be confirmed by the action of the Board or its designee.
Shares shall be issued directly to such entities.

         3.03 Stock may be issued to any individual or entity eligible
hereunder, regardless of his previous stockholdings.

         3.04 The issue price of the stock for which any person may be issued
under this Plan (and all other plans of the Company) may be increased or reduced
by the Board, or its designee, from time to time.

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4.00     NUMBER OF SHARES SUBJECT TO THE PLAN
         ------------------------------------
         4.01. The Board, shall reserve for the purposes of the Plan a total of
Five Hundred Thousand (500,000) of the authorized but unissued shares of common
shares of the Company.

5.00     PRICE OF COMMON SHARES
         ----------------------
         5.01. The initial and standard price per share of common stock to be
issued directly shall be $.50 per share but may be changed in each case by the
Board, or its designee, from time to time. If the share price is changed, the
Board, or its designee, shall determine the share price no later than the date
of the issuance of the shares and at such other times as the Board, or its
designee, deems necessary. The Board shall have absolute final discretion to
determine the price of the common stock under the Plan. In the absence of such
specific determination, the share price will be $.50 per share.

6.00     RESTRICTIONS ON TRANSFER
         ------------------------
         6.01 No right or privilege of any person under the Plan shall be
transferable or assignable, except to the person's personal representative in
the event of the person's death, and except as provided in Section 6.02, the
right to receive stock granted hereunder is exercisable only by the person
during his life.

         6.02 If an person dies holding the right to receive stock to be issued
pursuant to this Plan, his personal representative shall have the right to
exercise such right for only within one year after the date of the death of the
person.

7.00     RECLASSIFICATION, CONSOLIDATION OR MERGER
         -----------------------------------------
         If and to the extent that the number of issued shares of common stock
of the Company shall be increased or reduced by change in par value, split-up,
reclassification, distribution of a dividend payable in stock, or the like, the
number of shares subject to direct issuance and the price thereof per share
shall be proportionately adjusted. If the Company is reorganized or consolidated
or merged with another corporation, the person shall be entitled to receive
direct issuance covering shares of such reorganized, consolidated, or merged
company in the same proportion, at an equivalent price, and subject to the same
conditions.

8.00     DISSOLUTION OR LIQUIDATION
         --------------------------
         Upon the dissolution or liquidation of the Company, the rights granted
hereunder shall terminate and become null and void, but the person shall have
the right immediately prior to such dissolution or liquidation to exercise any
right granted and exercisable hereunder to the full extent not before exercised.

9.00     BINDING EFFECT
         --------------
         This Plan shall inure to the benefit of and be binding upon the Company
and its employees, and their respective heirs, executors, administrators,
successors and assigns.

10.00    ADOPTION OF PLAN
         ----------------
         This Plan has been duly adopted by the Board of Directors of the
Company on March 1, 2000.

11.00    NOTICES
         -------
         Any notice to be given to the Company under the terms of this plan
shall be addressed to such address as is set forth on the first page hereof.

         IN WITNESS WHEREOF, the Company has caused this Plan to be executed on
its behalf by its President, to be sealed by its corporate seal, and attested by
its Secretary effective the day and year first above written.

                                          MIRACOR DIAGNOSTICS, INC.
                                          By /signed/__________________________
                                             President
ATTEST:

/signed/_________________________
         Secretary

(SEAL)

                                       26<PAGE>

                                                                    EXHIBIT 4(i)

                                  IMPATH INC.

                          Employee Warrant Certificate
                          ----------------------------

          Date of Grant:
          Name of Employee:
          Number of Shares:
          Price Per Share:

          This is to certify that, effective on the date of grant specified
above, the Board of Directors (the "Board") of IMPATH Inc. (the "Company") has
granted to the above-named employee (the "Employee") a warrant to purchase from
the Company, for the price per share set forth above, the number of shares of
Common Stock, $.005 par value (the "Stock"), of the Company set forth above.

          The terms and conditions of the warrant granted hereby are as follows:

          1.    The price at which each share of Stock subject to this
warrant may be purchased shall be the price set forth above, subject to any
adjustments which may be made pursuant to Section 9 hereof.

          2.    Subject to the terms and conditions set forth herein, this
warrant shall become exercisable to purchase the shares of Stock covered by this
warrant, on a cumulative basis, in equal monthly increments, each equal to one-
thirty-sixth of the number of shares set forth above, beginning one month after
the date of grant and continuing to and including the thirty-sixth month after
the date of grant.  From and after such thirty-sixth month, this warrant

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shall be exercisable in full. This warrant shall expire on the tenth anniversary
(the "Expiration Date") of the date of grant and shall not be exercisable
thereafter.

          3.    Except as provided in Section 7 hereof, this warrant may not
be exercised unless the Employee is in the employ of the Company or one of its
parent or subsidiary corporations (within the meaning of Sections 425(e) and (f)
of the Internal Revenue Code of 1986, as amended, and referred to herein as
"Parent" and "Subsidiary", respectively) at the time of such exercise and shall
have been such an employee continuously since the date of grant of this warrant.
For purposes of this warrant, service as a director, officer or consultant of
the Company or any Parent or Subsidiary corporation shall be considered
employment.

          4.    Subject to the terms and conditions set forth herein, the
Employee may exercise this warrant at any time or times as to all or any of the
shares of Stock then purchasable in accordance with Section 2 hereof by
delivering to the Company written notice specifying:

               (i) the number of whole shares of Stock to be purchased together
          with payment in full of the aggregate warrant price of such shares,
          provided that this warrant may not be exercised for less than ten (10)
          shares of Stock or the number of shares of Stock remaining subject to
          warrant, whichever is smaller;

               (ii) the name or names in which the stock certificate or
          certificates are to be registered;

               (iii)  the address to which dividends, notices, reports, etc. are
          to be sent; and

               (iv) the Employee's social security number.

Only one Stock certificate will be issued unless the Employee otherwise requests
in writing.  Payment shall be in cash, or by certified or bank cashier's check
payable to the order of the Company, free from all collection charges.  If the
Employee so requests, shares of Stock purchased upon exercise of this warrant
may be issued in the name of the Employee or another person. The Employee shall
not be entitled to any rights as a stockholder of the Company in

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respect of any shares of Stock covered by this warrant until such shares of
Stock shall have been paid for in full and issued to the Employee.

          5.    As soon as practicable after the Company receives payment
for shares of Stock covered by this warrant, it shall deliver a certificate or
certificates representing the shares of Stock so purchased to the Employee.
Such certificate shall be registered in the name of the Employee, or in such
other name or names as the Employee shall request.

          6.    This warrant is personal to the Employee and during the
Employee's lifetime may be exercised only by the Employee or, in the event of
legal disability, his legal representative.  This warrant shall not be
transferable other than by will or the laws of descent and distribution.

          7.    In the event that the Employee's employment as an employee
of the Company or of any Subsidiary or Parent (hereinafter the "Employee's
employment") is terminated prior to the time that this warrant has been fully
exercised, this warrant shall be exercisable, as to any remaining shares of
Stock subject hereto, as follows:

          (A) Upon the death of the Employee during the Employee's employment,
     this warrant shall become exercisable in full and the person or persons to
     whom the Employee's rights with respect to this warrant are transferred by
     will or the laws of descent and distribution (collectively, the
     "Representative") may, at any time or times prior to the Expiration Date,
     purchase any or all of such shares of Stock;

          (B) Upon termination of the Employee's employment with the Company (w)
     as a result of retirement pursuant to a retirement plan of the Company, any
     Subsidiary or Parent, (x) as a result of Disability (as defined in the
     Employee's employment agreement dated August 28, 1998; the "Employment
     Agreement"), (y) by the Company other than for Cause (as defined in the
     Employment Agreement), or (z) by the Employee with Good Reason (as defined
     in the Employment Agreement), this warrant shall become exercisable in full
     and the Employee or the Representative, as the case may be, may, at any
     time or times prior to the Expiration Date, purchase any or all of such
     shares of Stock;

          (C) Upon termination of the Employee's employment with the Company
     under any circumstances not described in paragraphs (A) or (B) above, the
     Employee may, prior to the Expiration Date, purchase any or all of the
     shares of Stock with respect

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<PAGE>

     to which the Employee was entitled to exercise this warrant immediately
     prior to such termination, and the portion of this warrant not so
     exercisable will lapse on such date of termination; and

          (D) Upon expiration of the respective periods set forth in each of
     paragraphs (A) through (C) above, this warrant shall be canceled to the
     extent not theretofore canceled or exercised.

          Notwithstanding the foregoing, this warrant shall in no event be
exercisable after the Expiration Date specified in Section 2 hereof.

          8.    This warrant does not confer on the Employee any right to
continue as an employee of the Company or interfere in any way with the right of
the Company to determine the terms of the Employee's employment, subject to the
provisions of the Employment Agreement.

          9.    In the event that the Board shall determine that any
dividend or other distribution (whether in the form of cash, Stock, other
securities or other property), recapitalization, stock split, reverse stock
split, reorganization, merger, consolidation, split-up, spin-off, combination,
repurchase or exchange of Stock or other securities of the Company, issuance of
warrants or other rights to purchase Stock or other securities of the Company,
or other similar corporate transaction or event affects the Stock such that an
adjustment is determined by the Board to be appropriate in order to prevent
dilution or enlargement of the benefits or potential benefits intended to be
made available hereunder, then the Board shall, in such manner as it may deem
equitable, adjust the number of shares of Stock subject to this warrant, the
exercise price hereof, or both.

          In connection with any merger or consolidation in which the Company is
not the surviving corporation and which results in the holders of the
outstanding voting securities of the Company (determined immediately prior to
such merger or consolidation) owning less than a

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majority of the outstanding voting securities of the surviving corporation
(determined immediately following such merger or consolidation), or any sale or
transfer by the Company of all or substantially all its assets or any tender
offer or exchange offer for or the acquisition, directly or indirectly, by any
person or group of all or a majority of the then outstanding voting securities
of the Company, all of the warrants shall become exercisable in full,
notwithstanding any other provision of this Certificate, on and after (i) the
fifteenth day prior to the effective date of such merger, consolidation, sale,
transfer or acquisition or (ii) the date of commencement of such tender offer or
exchange offer, as the case may be.

          10.    This warrant shall be subject to the requirement that if at
any time the Board of Directors shall determine that the registration, listing
or qualification of the shares of Stock covered hereby upon any securities
exchange or under any federal or state law, or the consent or approval of any
governmental regulatory body is necessary or desirable as a condition of, or in
connection with, the granting of this warrant or the purchase of shares of Stock
hereunder, this warrant may not be exercised unless and until such registration,
listing, qualification, consent or approval shall have been effected or obtained
free of any conditions not acceptable to the Board of Directors.  The Board may
require that the person exercising this warrant shall make such representations
and agreements and furnish such information as it deems appropriate to assure
compliance with the foregoing or any other applicable legal requirements.

          11.    It shall be a condition to the obligation of the Company to
issue shares of Stock upon exercise of this warrant, that the Employee (or any
beneficiary or person entitled to exercise such warrant) pay to the Company,
upon its demand, such amount as may be requested by the Company for the purpose
of satisfying any liability to withhold federal, state or local

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income or other taxes. If the amount requested is not paid, the Company may
refuse to issue such shares of Stock.

          12.    All interpretations or determinations of the Board shall be
binding and conclusive upon the Employee and his legal representatives on any
question arising hereunder.

          13.    All notices hereunder to the Company shall be delivered or
mailed to the following address:

              IMPATH Inc.
              521 West 57th Street
              New York, New York  10019
              Attention:  Secretary

Such address for the service of notices may be changed at any time provided
notice of such change is furnished in advance to the Employee.

                        IMPATH INC.

                        By
                          _____________________________

                                       16

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