Exhibit 99(c)

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

                              WINTER HARBOR, L.L.C.

                                      AND

                                 MEDCROSS, INC.

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

                               WARRANT AGREEMENT

                            DATED AS OF JUNE 6, 1997

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

 
     WARRANT AGREEMENT dated as of June 6, 1997, between WINTER HARBOR, L.L.C.,
a Delaware limited partnership (hereinafter referred to as the "Initial Holder")
and MEDCROSS, INC., a Florida corporation (the "Company").

                              W I T N E S E T H :

     WHEREAS, the Company proposes to issue to the Initial Holder warrants
("Warrants") to purchase up to an aggregate of 500,000 shares of Common Stock
(as that term is defined in Section 8.5 below) of the Company; and

     WHEREAS, the Initial Holder has committed, subject to the terms of the
commitment letter dated April 11, 1997 (the "Commitment Letter"), from the
Initial Holder to the Company and accepted by the Company, to make a loan of up
to $2,000,000 to the Company; and

     WHEREAS, the Warrants to be issued pursuant to this Agreement will be
issued on the date of execution of the loan agreement contemplated by the
Commitment Letter (the "Closing Date") in consideration for, and as part of the
compensation in connection with, the Initial Holder'S commitment under the
Commitment Letter;

     NOW, THEREFORE, in consideration of the premises, the agreements herein set
forth and other good and valuable consideration, the receipt and sufficiency of
which are hereby acknowledged, the parties hereto agree as follows:

     1.  Grant.  The Initial Holder is hereby granted the right to purchase, at
         -----                                                                 
any time from the date hereof until 5:30 P.M., Delaware time, on March 11, 2002
(the "Warrant Exercise Term"), up to an aggregate of 500,000 shares of the
Company'S Common Stock (the "Warrant Shares") at an initial exercise price
(subject to adjustment as provided in Section 8 hereof) of $4.97 per Share,
subject to the terms and conditions of this Agreement.

     2.  Warrant Certificates.  The warrant certificates (the "Warrant
         --------------------                                         
Certificates") delivered and to be delivered pursuant to this Agreement shall be
in the form set forth in Exhibit A, attached hereto and made a part hereof, with
such appropriate insertions, omissions, substitutions, and other variations as
required or permitted by this Agreement.

     3.  Exercise of Warrant.
         ------------------- 

          3.1  The Warrants initially are exercisable at an aggregate initial
exercise price of $4.97 per share payable by certified or official bank check in
New York Clearing House 

 
funds, subject to adjustment as provided in Section 8 hereof. Upon surrender of
a Warrant Certificate with the annexed Form of Election to Purchase duly
executed, together with payment of the Purchase Price (as hereinafter defined)
for the Warrant Shares purchased at the Company'S principal offices, the
registered holder of a Warrant Certificate ("Holder" or "Holders") shall be
entitled to receive a certificate or certificates for the Warrant Shares so
purchased. The purchase rights represented by each Warrant Certificate are
exercisable at the option of the Holder thereof, in whole or in part (but not as
to fractional shares of the Common Stock underlying the Warrants). In the case
of the purchase of less than all the Warrant Shares purchasable under any
Warrant Certificate, the Company shall cancel said Warrant Certificate upon the
surrender thereof and shall execute and deliver a new Warrant Certificate of
like tenor for the balance of the Warrant Shares purchasable thereunder.

          3.2  Cashless Exercise.
               ----------------- 

               (a) At any time during the Warrant Exercise Term, each Holder
may, at its option, exchange the Warrants represented by such Holder'S Warrant
Certificate, in whole or in part (a "Warrant Exchange"), into the number of
fully paid and non-assessable Warrant Shares determined in accordance with this
Section 3.2, by surrendering such Warrant Certificate at the principal office of
the Company or at the office of its transfer agent, accompanied by a notice
stating such Holder'S intent to effect such exchange, the number of Warrant
Shares to be exchanged and the date on which the Holder requests that such
Warrant Exchange occur (the "Notice of Exchange"). The Warrant Exchange shall
take place on the date specified in the Notice of Exchange, or, if later, the
date the Notice of Exchange is received by the Company (the "Exchange Date").
Certificates for the Warrant Shares issuable upon such Warrant Exchange and, if
applicable, a new Warrant of like tenor evidencing the balance of the Warrant
Shares remaining subject to the Holder'S Warrant Certificate, shall be issued as
of the Exchange Date and delivered to the Holder within three days following the
Exchange Date. In connection with any Warrant Exchange, the Holder'S Warrant
Certificate shall represent the right to subscribe for and acquire the number of
Warrant Shares (rounded to the next highest integer) equal to (A) the number of
Warrant Shares specified by the Holder in its Notice of Exchange (the "Total
Share Number") less (B) the number of Warrant Shares equal to the quotient
obtained by dividing (i) the product of the Total Share Number and the existing
Exercise Price (as hereinafter defined) per Share by (ii) the Market Price (as
hereafter defined) of a share of Common Stock.

               (b) As used in this Agreement, the phrase "Market Price" at any
date shall be deemed to be the last reported sale price, or, in case no such
reported sale takes place on such day,



                                     - 2 -


 
the average of the last reported sale prices for the last three trading days, in
either case as officially reported by the principal securities exchange on which
the Common Stock is listed or admitted to trading or by the Nasdaq Stock Market,
National Market ("Nasdaq"), or, if the Common Stock is not listed or admitted to
trading on any national securities exchange or quoted by Nasdaq, the average
closing bid price as furnished by the National Association of Securities
Dealers, Inc. ("NASD") through Nasdaq or similar organization if Nasdaq is no
longer reporting such information, or if the Common Stock is not quoted on
Nasdaq, as determined in good faith by resolution of the Board of Directors of
the Company, based on the best information available to it for the two days
immediately preceding such issuance or sale and the day of such issuance or
sale.

     4.  Issuance of Certificates.  Upon the exercise of the Warrants, the
         ------------------------                                         
issuance of certificates for Warrant Shares or other securities, properties or
rights underlying such Warrants, shall be made forthwith (and in any event
within three business days thereafter) without charge to the Holder thereof,
including, without limitation, any tax which may be payable in respect of the
issuance thereof, and such certificates shall be issued in the name of, or in
such names as may be directed by, the Holder thereof; provided, however, that
                                                      --------  -------      
the Company shall not be required to pay any tax which may be payable in respect
of any transfer involved in the issuance and delivery of any such certificates
in a name other than that of the Holder, and the Company shall not be required
to issue or deliver such certificates unless or until the person or persons
requesting the issuance thereof shall have paid to the Company the amount of
such tax or shall have established to the satisfaction of the Company that such
tax has been paid.

     The Warrant Certificates and the certificates representing the Warrant
Shares (and/or other securities, property or rights issuable upon the exercise
of the Warrants) shall be executed on behalf of the Company by the manual or
facsimile signature of the then present Chairman or Vice Chairman of the Board
of Directors or President or Vice President of the Company under its corporate
seal reproduced thereon, attested to by the manual or facsimile signature of the
then present Secretary or Assistant Secretary of the Company.  Warrant
Certificates shall be dated the date of execution by the Company upon initial
issuance, division, exchange, substitution or transfer.

     5.  Restriction on Transfer of Warrants.
         ----------------------------------- 

          Upon exercise, in part or in whole, of the Warrants, certificates
representing the Warrant Shares shall bear a legend substantially similar to the
legend set forth in Section 7.1. The Holder of a Warrant Certificate, by its
acceptance thereof, 


                                     - 3 -

 
agrees that the Warrants are being acquired as an investment and not with a view
to the distribution thereof.

     6.  Exercise Price.
         -------------- 

          6.1  Initial and Adjusted Exercise Price.  Except as otherwise
               -----------------------------------                      
provided in Section 8 hereof, the initial exercise price of each Warrant shall
be $4.97.  The adjusted exercise price shall be the price which shall result
from time to time from any and all adjustments of the initial exercise price in
accordance with the provisions of Section 8 hereof.

          6.2  Exercise Price.  The term "Exercise Price" herein shall mean the
               --------------                                                  
initial exercise price or the adjusted exercise price, depending upon the
context.

     7.  Registration Rights.
         ------------------- 

          7.1  Registration Under the Securities Act of 1933. The Warrants, the
               ---------------------------------------------                   
Warrant Shares and any of the other securities issuable upon exercise of the
Warrants have not been registered under the Securities Act of 1933, as amended
(the "Act").  Upon exercise, in part or in whole, of the Warrants, certificates
representing the Warrant Shares and any of the other securities issuable upon
exercise of the Warrants (collectively, the "Warrant Securities") shall bear the
following legend:

          The securities represented by this certificate have not been
registered under the Securities Act of 1933, as amended ("Act"), and may not be
offered or sold except pursuant to (i) an effective registration statement under
the Act, (ii) to the extent applicable, Rule 144 under the Act (or any similar
rule under such Act relating to the disposition of securities), or (iii) an
opinion of counsel, if such opinion shall be reasonably satisfactory to counsel
to the issuer, that an exemption from registration under such Act is available.

          7.2  Piggyback Registration.  If at any time the Company proposes to
               ----------------------                                         
register any of its securities under the Act (other than in connection with a
merger or pursuant to Form S-8), it will give written notice by registered mail,
at least thirty days prior to the filing of each such registration statement, to
each Holder of the Warrants and/or the Warrant Securities of its intention to do
so.  If any Holder of the Warrants and/or Warrant Securities notifies the
Company within twenty days after receipt of any such notice of its or their
desire to include any such securities in such proposed registration statement,
the Company shall afford each such Holder of the Warrants and/or Warrant
Securities the opportunity to have any such Warrants and/or Warrant Securities
registered under such registration statement.


                                     - 4 -

 
          Notwithstanding the provisions of this Section 7.2, the Company shall
have the right at any time after it shall have given written notice pursuant to
this Section 7.2 (irrespective of whether a written request for inclusion of any
such securities shall have been made) to elect not to file any such proposed
registration statement, or to withdraw the same after the filing but prior to
the effective date thereof.

          7.3  Demand Registration.
               ------------------- 

               (a) At any time from and after the date hereof, the Holders of
the Warrants and/or Warrant Securities representing a "Majority" (as hereinafter
defined) of such securities (assuming the exercise of all of the Warrants) shall
have the right (which right is in addition to the registration rights under
Section 7.2 hereof), exercisable by written notice to the Company, to have the
Company prepare and file with the Securities and Exchange Commission (the
"Commission"), on one occasion, a registration statement and such other
documents, including a prospectus, as may be necessary in the opinion of both
counsel for the Company and counsel for such Holders, in order to comply with
the provisions of the Act, so as to permit a public offering and sale of their
respective Warrant Securities for nine consecutive months by such Holders and
any other Holders of the Warrants and/or Warrant Securities who notify the
Company within ten days after receiving notice from the Company of such request.

               (b) The Company agrees to give written notice of any registration
request under this Section 7.3 by any Holder or Holders to all other registered
Holders of the Warrants and the Warrant Securities within ten days from the date
of the receipt of any such registration request.

               (c) Notwithstanding anything to the contrary contained herein, if
the Company shall not have complied with Section 7.4(a) hereof pursuant to the
written notice specified in Section 7.3(a) of a Majority of the Holders of the
Warrants and/or Warrant Securities, the Company agrees that upon twenty days
prior written notice of election of a Majority of the Holders of the Warrants
and/or Warrant Securities, and the failure of the Company to comply with Section
7.4(a) on or before the expiration of such twenty day period, it shall
repurchase (i) any and all Warrant Securities at the higher of the Market Price
(as defined in Section 3.2(b)) per share of Common Stock on (x) the date of the
notice sent pursuant to Section 7.3(a) or (y) the expiration of the period
specified in Section 7.4(a) and (ii) any and all Warrants at such Market Price
less the exercise prices of such Warrants. Such repurchase shall be in
immediately available funds and shall close within two days after the later of
(i) the expiration of the period specified in Section 7.4(a) or (ii) the

                                     - 5 -

 
delivery of the written notice of election specified in this Section 7.3(c).

          7.4  Covenants of the Company With Respect to Registration.  In
               -----------------------------------------------------     
connection with any registration under Section 7.2 or 7.3 hereof, the Company
agrees as follows:

               (a) The Company shall use its best efforts to file a registration
statement within ninety-five days of receipt of any demand therefor, shall use
its best efforts to have any registration statements declared effective at the
earliest possible time, and shall furnish each Holder desiring to sell Warrant
Securities such number of prospectuses as shall reasonably be requested. Best
efforts shall include the reasonable efforts to insure the availability of
financial statements and other matters necessary to effectuate the filing.

               (b) The Company shall pay all costs (excluding fees and expenses
of Holder(S) counsel and any underwriting or selling commissions), fees and
expenses in connection with all registration statements filed pursuant to
Sections 7.2 and 7.3(a) hereof including, without limitation, the Company'S
legal and accounting fees, printing expenses, blue sky fees and expenses. If the
Company shall fail to comply with the provisions of Section 7.4(a), the Company
shall, in addition to any other equitable or other relief available to the
Holder(S), be liable for any and all incidental, special and consequential
damages and damages due to loss of profit sustained by the Holder(S) requesting
registration of their Warrant Securities. Notwithstanding anything herein to the
contrary, provided the Company complies with the provisions of Section 7.3(c),
the Company shall have no liability under the foregoing sentence of this Section
7.4(b).

               (c) The Company will take all necessary action which may be
required in qualifying or registering the Warrant Securities included in a
registration statement for offering and sale under the securities or blue sky
laws of such states as reasonably are requested by the Holder(S), provided that
the Company shall not be obligated to execute or file any general consent to
service of process or to qualify as a foreign corporation to do business under
the laws of any such jurisdiction.

               (d) The Company shall indemnify the Holder(S) of the Warrant
Securities to be sold pursuant to any registration statement and each person, if
any, who controls such Holders within the meaning of Section 15 of the Act or
Section 20(a) of the Securities Exchange Act of 1934, as amended ("Exchange
Act"), against all loss, claim, damage, expense or liability (including all
expenses reasonably incurred in investigating, preparing or defending against
any claim whatsoever) to which any of them may 



                                     - 6 -

 
become subject under the Act, the Exchange Act or otherwise, arising from such
registration statement.

               (e) The Holder(S) of the Warrant Securities to be sold pursuant
to a registration statement, and their successors and assigns, shall severally,
and not jointly, indemnify the Company, its officers and directors and each
person, if any, who controls the Company within the meaning of Section 15 of the
Act or Section 20(a) of the Exchange Act, against all loss, claim, damage,
expense or liability (including all expenses reasonably incurred in
investigating, preparing or defending against any claim whatsoever) to which
they may become subject under the Act, the Exchange Act or otherwise, arising
from information furnished by or on behalf of such Holders, or their successors
or assigns, for specific inclusion in such registration statement.

               (f)  Nothing contained in this Agreement shall be construed as
requiring the Holder(S) to exercise their Warrants prior to the initial filing
of any registration statement or the effectiveness thereof.

               (g)  The Company shall use its best efforts not to permit the
inclusion of any securities other than the Warrants and Warrant Securities to be
included in any registration statement filed pursuant to Section 7.3 hereof or
permit any other registration statement to be or remain effective during the
effectiveness of a registration statement filed pursuant to Section 7.3 hereof
(except registration statements on Form S-8 or filed pursuant to contractual
commitments existing on the date hereof), without the prior written consent of
the Holders of the Warrants and Warrant Securities representing a majority of
such securities.  In the event the Company is required to include securities
other than the Warrants and Warrant Securities in a registration statement filed
under Section 7.3, the Holders shall be entitled to one additional right to
demand the preparation and filing of a registration under Section 7.3.

               (h) The Company shall furnish to each broker-dealer participating
as an underwriter, if any, a signed counterpart, addressed to such broker-dealer
or underwriter, of (i) an opinion of counsel to the Company, dated the effective
date of such registration statement (and, if such registration includes an
underwritten public offering, an opinion dated the date of the closing under the
underwriting agreement), and (ii) a "cold comfort" letter dated the effective
date of such registration statement (and, if such registration includes an
underwritten public offering, a letter dated the date of the closing under the
underwriting agreement) signed by the independent public accountants who have
issued a report on the Company'S financial statements included in such
registration statement, in each case covering substantially the same matters
with respect to such registration statement (and the prospectus




                                     - 7 -

 
included therein) and, in the case of such accountants' letter, with respect to
events subsequent to the date of such financial statements, as are customarily
covered in opinions of issuer'S counsel and in accountants' letters delivered to
underwriters in underwritten public offerings of securities.

               (i) The Company, as soon as practicable, but in any event not
later than forty-five days after the end of the twelve-month period beginning on
the day after the end of the fiscal quarter of the Company during which the
effective date of the Registration Statement occurs (ninety days in the event
that the end of such fiscal quarter is the end of the Company'S fiscal year),
shall make generally available to its security holders, in the manner specified
in Rule 158(b) of the Rules and Regulations of the Commission, an earnings
statement which will be in the detail required by, and will otherwise comply
with, the provisions of Section 11(a) of the Act and Rule 158(a) of the Rules
and Regulations of the Commission, which statement need not be audited unless
required by the Act, covering a period of at least twelve consecutive months
after the effective date of the Registration Statement.

               (j) The Company shall deliver promptly to each Holder
participating in the offering and to the managing underwriters, if any, copies
of all correspondence between the Commission and the Company, its counsel or
auditors and all memoranda relating to discussions with the Commission or its
staff with respect to the registration statement and permit each Holder and
underwriter to do such investigation, upon reasonable advance notice, with
respect to information contained in or omitted from the registration statement
as it deems reasonably necessary to comply with applicable securities laws or
rules of the NASD. Such investigation shall include access to books, records and
properties and opportunities to discuss the business of the Company with its
officers and independent auditors, all to such reasonable extent and at such
reasonable times and as often as any such Holder shall reasonably request.

                 (k) The Company shall enter into an underwriting agreement with
the managing underwriters selected for such underwriting by Holders holding a
Majority of the Warrant Securities requested to be included in such
underwriting. Such agreement shall be satisfactory in form and substance to the
Company, each Holder and such managing underwriters, and shall contain such
representations, warranties and covenants by the Company and such other terms as
are customarily contained in agreements of that type used by the managing
underwriter.

          The Holders shall be parties to any underwriting agreement relating to
an underwritten sale of their Warrant Securities and may, at their option,
require that any or all the representations, warranties and covenants of the
Company to or 

                                     - 8 -

 
for the benefit of such underwriters shall also be made to and for the benefit
of such Holders. Such Holders shall not be required to make any representations
or warranties to or agreements with the Company or the underwriters except as
they may relate to such Holders and their intended methods of distribution.

             (1) For purposes of this Agreement, the term "Majority" in
reference to the Holders of Warrants or Warrant Securities, shall mean Holders
who hold in excess of fifty percent of the then outstanding Warrants or Warrant
Securities that (i) are not held by the Company, an affiliate (other than a
Holder), officer, employee or agent thereof or any of their respective
affiliates, members of their family, persons acting as nominees or in
conjunction therewith and (ii) have not been resold to the public pursuant to a
registration statement filed with the Commission under the Act.

     8.  Adjustments to Exercise Price and Number of Securities.
         ------------------------------------------------------ 

          8.1  Computation of Adjusted Exercise Price.
               -------------------------------------- 

               (a) Except as hereinafter provided, in case the Company shall at
any time after the date hereof issue or sell any shares of Common Stock (other
than the issuances or sales referred to in Section 8.7 hereof), including (x)
shares held in the Company'S treasury, (y) shares of Common Stock issued upon
the exercise of any options, rights or warrants to subscribe for shares of
Common Stock and (z) shares of Common Stock issued upon the direct or indirect
conversion or exchange of securities for shares of Common Stock, for a
consideration per share less than the lower of the Exercise Price in effect
immediately prior to the issuance or sale of such shares or the Market Price (as
defined in Section 3.2(b)) per share of Common Stock on the date immediately
prior to the issuance or sale of such shares or without consideration, then
forthwith upon such issuance or sale, the Exercise Price shall (until another
such issuance or sale) be reduced to the price (calculated to the nearest full
cent) equal to the quotient derived by dividing (A) an amount equal to the sum
of (X) the product of (a) the lower of (i) the Exercise Price in effect
immediately prior to such issuance or sale and (ii) the Market Price per share
of Common Stock on the date immediately prior to the issuance or sale of such
shares, in either event, reduced, but not below the par value of the Common
Stock, by the positive difference between the (u) Market Price per share of
Common Stock on the date immediately prior to the issuance or sale and (v) the
amount per share received in connection with such issuance or sale, multiplied
by (b) the total number of shares of Common Stock outstanding immediately prior
to such issuance or sale plus, (Y) the aggregate of the amount of all
consideration, if any, received by the Company upon such issuance or sale, by
(B) the total number of shares of Common Stock


                                     - 9 -


 
outstanding immediately after such issuance or sale; provided, however, that in
                                                     --------  -------
no event shall the Exercise Price be adjusted pursuant to this computation to an
amount in excess of the Exercise Price in effect immediately prior to such
computation, except in the case of a combination of outstanding shares of Common
Stock, as provided by Section 8.3 hereof.

               (b) In addition to the foregoing, in the event the closing bid
price of the Company'S Common Stock is less than $4.97 at any time during the
period commencing on the date hereof and ending on March 11, 2002 (the
"Adjustment Period") the Exercise Price shall be adjusted as herein provided. In
the event the closing bid price of the Common Stock is less than $4.97 for five
consecutive trading days during the Adjustment Period, the Exercise Price shall
be reduced to the lower of the then current Exercise Price or the lowest of the
average closing bid price of the Common Stock for five consecutive trading days
during the Adjustment Period. In no event shall the Exercise Price be adjusted
below $1.25 on account of this adjustment in this subparagraph 8(b).

               (c)  For the purposes of this Section 8 the term "Exercise Price"
shall mean the Exercise Price per share of Common Stock set forth in Section 6
hereof, as adjusted from time to time pursuant to the provisions of this Section
8.

               (d) For the purposes of any computation to be made in accordance
with this Section 8.1, the following provisions shall be applicable:

               (i) In case of the issuance or sale of shares of Common Stock for
a consideration part or all of which shall be cash, the amount of the cash
consideration therefor shall be deemed to be the amount of cash received by the
Company for such shares (or, if shares of Common Stock are offered by the
Company for subscription, the subscription price, or, if shares of Common Stock
shall be sold to underwriters or dealers for public offering without a
subscription offering, the initial public offering price) before deducting
therefrom any compensation paid or discount allowed in the sale, underwriting or
purchase thereof by underwriters or dealers or others performing similar
services, or any expenses incurred in connection therewith.

               (ii) In case of the issuance or sale (otherwise than as a
dividend or other distribution on any stock of the Company) of shares of Common
Stock for a consideration part or all of which shall be other than cash, the
amount of the consideration therefor other than cash shall be deemed to be the
value of such consideration as determined in good faith by the Board of
Directors of the Company.

                                    - 10 -

 
               (iii) Shares of Common Stock issuable by way of dividend or other
distribution on any stock of the Company shall be deemed to have been issued
immediately after the opening of business on the day following the record date
for the determination of stockholders entitled to receive such dividend or other
distribution and shall be deemed to have been issued without consideration.

               (iv) The reclassification of securities of the Company other than
shares of Common Stock into securities including shares of Common Stock shall be
deemed to involve the issuance of such shares of Common Stock for a
consideration other than cash immediately prior to the close of business on the
date fixed for the determination of security holders entitled to receive such
shares, and the value of the consideration allocable to such shares of Common
Stock shall be determined as provided in subsection (d)(ii) of this Section 8.1.

               (v) The number of shares of Common Stock at any one time
outstanding shall include the aggregate number of shares issued or issuable
(subject to readjustment upon the actual issuance thereof) upon the exercise of
options, rights, warrants and upon the conversion or exchange of convertible or
exchangeable securities.

          8.2  Options, Rights, Warrants and Convertible and Exchangeable
               ----------------------------------------------------------
Securities.  In case the Company shall at any time after the date hereof issue
- ----------                                                                    
options, rights or warrants to subscribe for shares of Common Stock, or issue
any securities convertible into or exchangeable for shares of Common Stock, for
a consideration per share less than the Exercise Price in effect or the Market
Price immediately prior to the issuance of such options, rights or warrants, or
such convertible or exchangeable securities, or without consideration, the
Purchase Price in effect immediately prior to the issuance of such options,
rights or warrants, or such convertible or exchangeable securities, as the case
may be, shall be reduced to a price determined by making a computation in
accordance with the provisions of Section 8.1 hereof, provided that:

               (a) The aggregate maximum number of shares of Common Stock, as
the case may be, issuable under such options, rights or warrants shall be deemed
to be issued and outstanding at the time such options, rights or warrants were
issued, and for a consideration equal to the minimum purchase price per share
provided for in such options, rights or warrants at the time of issuance, plus
the consideration (determined in the same manner as consideration received on
the issue or sale of shares in accordance with the terms of the Warrants), if
any, received by the Company for such options, rights or warrants.


                                    - 11 -


 
               (b) The aggregate maximum number of shares of Common Stock
issuable upon conversion or exchange of any convertible or exchangeable
securities shall be deemed to be issued and outstanding at the time of issuance
of such securities, and for a consideration equal to the consideration
(determined in the same manner as consideration received on the issue or sale of
shares of Common Stock in accordance with the terms of the Warrants) received by
the Company for such securities, plus the minimum consideration, if any,
receivable by the Company upon the conversion or exchange thereof.

               (c) If any change shall occur in the price per share provided for
in any of the options rights or warrants referred to in subsection (a) of this
Section 8.2, or in the price per share at which the securities referred to in
subsection (b) of this Section 8.2 are convertible or exchangeable, such
options, rights or warrants or conversion or exchange rights, as the case may
be, shall be deemed to have expired or terminated on the date when such price
change became effective in respect of shares not theretofore issued pursuant to
the exercise or conversion or exchange thereof, and the Company shall be deemed
to have issued upon such date new options, rights or warrants or convertible or
exchangeable securities at the new price in respect of the number of shares
issuable upon the exercise of such options, rights or warrants or the conversion
or exchange of such convertible or exchangeable securities.

               (d) Notwithstanding the foregoing, the Exercise Price shall not
be adjusted to a price less than $2.00 per share as adjusted from time to time
in accordance with paragraph 8.3 (the "Base Price") on account of this paragraph
8.2 unless the "consideration per share" referred to above for any such issuance
or sale is less than the Base Price.

          8.3  Subdivision and Combination.  In case the Company shall at any
               ---------------------------                                   
time subdivide or combine the outstanding shares of Common Stock, the Exercise
Price shall forthwith be proportionately decreased in the case of subdivision or
increased in the case of combination.

          8.4  Adjustment in Number of Securities.  Upon each adjustment of the
               ----------------------------------                              
Exercise Price pursuant to the provisions of this Section 8, the number of
Warrant Securities issuable upon the exercise of each Warrant shall be adjusted
to the nearest full amount by multiplying a number equal to the Exercise Price
in effect immediately prior to such adjustment by the number of Warrant
Securities issuable upon exercise of the Warrants immediately prior to such
adjustment and dividing the product so obtained by the adjusted Exercise Price.

          8.5  Definition of Common Stock.  For the purpose of this Agreement,
               --------------------------                                     
the term "Common Stock" shall mean (i) the class 



                                    - 12 -

 
of stock designated as Common Stock in the Articles of Incorporation of the
Company as may be amended as of the date hereof, or (ii) any other class of
stock resulting from successive changes or reclassifications of such Common
Stock, consisting solely of changes in par value, or from par value to no par
value, or from no par value to par value. In the event that the Company shall
after the date hereof issue securities with greater or superior voting rights
than the shares of Common Stock outstanding as of the date hereof, the Holder,
at its option, may receive upon exercise of any Warrant either shares of Common
Stock or a like number of such securities with greater or superior voting
rights.

          8.6  Merger or Consolidation.  In case of any consolidation of the
               -----------------------                                      
Company with, or merger of the Company with, or merger of the Company into,
another corporation (other than a consolidation or merger which does not result
in any reclassification or change of the outstanding Common Stock), the
corporation formed by such consolidation or merger shall execute and deliver to
the Holder a supplemental warrant agreement providing that the holder of each
Warrant then outstanding or to be outstanding shall have the right thereafter
(until the expiration of such Warrant) to receive, upon exercise of such
Warrant, the kind and amount of shares of stock and other securities and
property receivable upon such consolidation or merger, by a holder of the number
of shares of Common Stock of the Company for which such warrant might have been
exercised immediately prior to such consolidation, merger, sale or transfer.
Such supplemental warrant agreement shall provide for adjustments which shall be
identical to the adjustments provided in Section 8.  The above provisions of
this subsection shall similarly apply to successive consolidations or mergers.

          8.7   No Adjustment of Exercise Price in Certain Cases. No adjustment
                ------------------------------------------------               
of the Exercise Price shall be made:

               (a)  Upon the conversion or exercise of securities outstanding on
the date hereof; or

               (b) If the amount of said adjustment shall be less than two cents
($.02) per Warrant; provided, however, that in such case any adjustment that
                    --------  -------                                       
would otherwise be required then to be made shall be carried forward and shall
be made at the time of and together with the next subsequent adjustment which,
together with any adjustment so carried forward, shall amount to at least two
cents ($.02) per Warrant.

          8.9   Dividends and Other Distributions.  In the event that the
                ---------------------------------                        
Company shall at any time prior to the exercise of all Warrants declare a
dividend (other than a dividend consisting solely of shares of Common Stock) or
otherwise distribute to its stockholders any assets, property, rights, evidences
of 


                                    - 13 -

 
indebtedness, securities (other than shares of Common Stock), whether issued
by the Company or by another, or any other thing of value, the Holders of the
unexercised Warrants shall thereafter be entitled, in addition to the shares of
Common Stock or other securities and property receivable upon the exercise
thereof, to receive, upon the exercise of such Warrants, the same property,
assets, rights, evidences of indebtedness, securities or any other thing of
value that they would have been entitled to receive at the time of such dividend
or distribution as if the Warrants had been exercised immediately prior to such
dividend or distribution.  At the time of any such dividend or distribution, the
Company shall make appropriate reserves to ensure the timely performance of the
provisions of this subsection 8.9.

     9.  Exchange and Replacement of Warrant Certificates.  Each Warrant
         ------------------------------------------------               
Certificate is exchangeable without expense, upon the surrender thereof by the
registered Holder at the principal executive office of the Company, for a new
Warrant Certificate of like tenor and date representing in the aggregate the
right to purchase the same number of Warrant Securities in such denominations as
shall be designated by the Holder thereof at the time of such surrender.

          Upon receipt by the Company of evidence reasonably satisfactory to it
of the loss, theft, destruction or mutilation of any Warrant Certificate, and,
in case of loss, theft or destruction, of indemnity or security reasonably
satisfactory to it, and reimbursement to the Company of all reasonable expenses
incidental thereto, and upon surrender and cancellation of the Warrants, if
mutilated, the Company will make and deliver a new Warrant Certificate of like
tenor, in lieu thereof.

     10.  Elimination of Fractional Interests.  The Company shall not be
          -----------------------------------                           
required to issue certificates representing fractions of shares of Common Stock
upon the exercise of the Warrants, nor shall it be required to issue scrip or
pay cash in lieu of fractional interests, it being the intent of the parties
that all fractional interests shall be eliminated by rounding any fraction up to
the nearest whole number of shares of Common Stock or other securities,
properties or rights.

     11.  Reservation and Listing of Securities.  The Company shall at all times
          -------------------------------------                                 
after July 31, 1997, reserve and keep available out of its authorized shares of
Common Stock, solely for the purpose of issuance upon the exercise of the
Warrants, such number of shares of Common Stock or other securities, properties
or rights as shall be issuable upon the exercise thereof.  The Company agrees
that, upon exercise of the Warrants and payment of the Exercise Price therefor,
all shares of Common Stock and other securities issuable upon such exercise
shall be duly and validly issued, fully paid, non-assessable and not subject to
the preemptive rights of any stockholder.  As long as 


                                    - 14 -

 
the Warrants shall be outstanding, the Company shall use its best efforts to
cause all shares of Common Stock issuable upon the exercise of the Warrants to
be listed (subject to official notice of issuance) on all securities exchanges
on which the Common Stock may then be listed and/or quoted.

     12.  Notices to Warrant Holders.  Nothing contained in this Agreement shall
          --------------------------                                            
be construed as conferring upon the Holders the right to vote or to consent or
to receive notice as a stockholder in respect of any meetings of stockholders
for the election of directors or any other matter, or as having any rights
whatsoever as a stockholder of the Company.  If, however, at any time prior to
the expiration of the Warrants and their exercise, any of the following events
shall occur:

          (a)  the Company shall take a record of the holders of its shares of
Common Stock for the purpose of entitling them to receive a dividend or
distribution payable otherwise than in cash, or a cash dividend or distribution
payable otherwise than out of current or retained earnings, as indicated by the
accounting treatment of such dividend or distribution on the books of the
Company; or

          (b)  the Company shall offer to all the holders of its Common Stock
any additional shares of capital stock of the Company or securities convertible
into or exchangeable for shares of capital stock of the Company, or any option,
right or warrant to subscribe therefor; or

          (c)  a dissolution, liquidation or winding up of the Company (other
than in connection with a consolidation or merger) or a sale of all or
substantially all of its property assets and business as an entirety shall be
proposed;

then, in any one or more of said events the Company shall give written notice of
such event at least fifteen days prior to the date fixed as a record date or the
date of closing the transfer books for the determination of the stockholders
entitled to such dividend, distribution, convertible or exchangeable securities
or subscription rights, or entitled to vote on such proposed dissolution,
liquidation, winding up or sale.  Such notice shall specify such record date or
the date of closing the transfer books, as the case may be.  Failure to give
such notice or any defect therein shall not affect the validity of any action
taken in connection with the declaration or payment of any such dividend, or the
issuance of any convertible or exchangeable securities, or subscription rights,
options or warrants, or any proposed dissolution, liquidation, winding up or
sale.



                                    - 15 -

 
     13.  Notices.
          ------- 

          All notices requests, consents and other communications hereunder
shall be in writing and shall be deemed to have been duly made when delivered,
or mailed by registered or certified mail, return receipt requested:

               (a)  If to the registered Holder of the Warrants, to the address
of such Holder as shown on the books of the Company; or

               (b) If to the Company, to 13751 South Wadsworth Park Drive, Suite
200, Draper, Utah 84020 or to such other address as the Company may designate by
notice to the Holders.

     14.  Successors.  All the covenants and provisions of this Agreement shall
          ----------                                                           
be binding upon and inure to the benefit of the Company, the Holders and their
respective successors and assigns hereunder.

     15.  Termination.  This Agreement shall terminate at the close of business
          -----------                                                          
on March 11, 2002.  Notwithstanding the foregoing, the indemnification
provisions contained herein shall survive such termination.

     16.  Governing Law; Submission to Jurisdiction. This Agreement and each
          -----------------------------------------                         
Warrant 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 construed in
accordance with the laws of said State without giving effect to the rules of
said State governing the conflicts of laws.

     The Company and each Holder hereby agree that any action, proceeding or
claim against it arising out of, or relating in any way to, this Agreement shall
be brought and enforced in the State or Federal courts located in the State of
Delaware, and irrevocably submits to such jurisdiction, which jurisdiction shall
be exclusive.  The Company and each Holder hereby irrevocably waive any
objection to such exclusive jurisdiction or inconvenient forum.  Any such
process or summons to be served upon the Company or any Holder (at the option of
the party bringing such action, proceeding or claim) may be served by
transmitting a copy thereof, by registered or certified mail, return receipt
requested, postage prepaid, addressed to it at the address set forth in Section
13 hereof.  Such mailing shall be deemed personal service and shall be legal and
binding upon the party so served in any action, proceeding or claim.  The
Company and each Holder agree that the prevailing party in any such action or
proceeding shall be entitled to recover from the other party all of its
reasonable legal costs and expenses relating to such action or proceeding and/or
incurred in connection with the preparation therefor.



                                    - 16 -

 
     17.  Entire Agreement; Modification.  This Agreement contains the entire
          ------------------------------                                     
understanding between the parties hereto with respect to the subject matter
hereof and may not be modified or amended except by a writing duly signed by the
party against whom enforcement of the modification or amendment is sought.

     18.  Severability.  If any provision of this Agreement shall be held to be
          ------------                                                         
invalid or unenforceable, such invalidity or unenforceability shall not affect
any other provision of this Agreement.

     19.  Captions.  The caption headings of the Sections of this Agreement are
          --------                                                             
for convenience of reference only and are not intended, nor should they be
construed as, a part of this Agreement and shall be given no substantive effect.

     20.  Benefits of this Agreement.  Nothing in this Agreement shall be
          --------------------------                                     
construed to give to any person or corporation other than the Company and the
Initial Holder and any other registered Holder(s) of the Warrant Certificates or
Warrant Securities 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 and the Initial Holder and any other Holder(s) of the Warrant
Certificates or Warrant Securities.

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


                                    - 17 -

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

MEDCROSS, INC.

By: /s/ John Edwards
    ------------------------------
Name: John Edwards
      ----------------------------
Title: President
       ---------------------------


Winter Harbor, L.L.C.
By First Media Corporation, its general partner

By: /s/ Ralph W. Hardy, Jr.
    ------------------------------
Name: Ralph W. Hardy, Jr.
      ----------------------------
Title: Secretary
       ---------------------------

                                    - 18 -

 
THE WARRANTS REPRESENTED BY THIS CERTIFICATE AND THE OTHER SECURITIES ISSUABLE
UPON EXERCISE THEREOF MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO (i) AN
EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933, (ii) TO THE
EXTENT APPLICABLE, RULE 144 UNDER SUCH ACT (OR ANY SIMILAR RULE UNDER SUCH ACT
RELATING TO THE DISPOSITION OF SECURITIES), OR (iii) AN OPINION OF COUNSEL, IF
SUCH OPINION SHALL BE REASONABLY SATISFACTORY TO COUNSEL FOR THE ISSUER, THAT AN
EXEMPTION FROM REGISTRATION UNDER SUCH ACT IS AVAILABLE.

                            EXERCISABLE ON OR BEFORE
                    5:30 P.M., DELAWARE TIME, March 11, 2002

No. ________
500,000 Warrants
                              WARRANT CERTIFICATE

     This Warrant Certificate certifies that Winter Harbor, L.L.C., or
registered assigns, is the registered holder of 500,000 Warrants to purchase
initially, at any time from the date hereof until 5:30 p.m. Delaware time on
March 11, 2002 ("Expiration Date"), up to 500,000 fully-paid and non-assessable
shares of common stock, par value $.007 per share ("Common Stock") of Medcross,
Inc., a Florida corporation (the "Company"), at the initial exercise price,
subject to adjustment in certain events (the "Exercise Price"), of $4.97 per
share of Common Stock upon surrender of this Warrant Certificate and payment of
the Exercise Price at an office or agency of the Company, but subject to the
conditions set forth herein and in the Warrant Agreement dated as of June 6,
1997 between the Company and Winter Harbor, L.L.C. (the "Warrant Agreement").
Except as otherwise provided in Section 3.2 of the Warrant Agreement, payment of
the Exercise Price shall be made by certified or official bank check in New York
Clearing House funds payable to the order of the Company.

     No Warrant may be exercised after 5:30 p.m., Delaware time, on the
Expiration Date, at which time all Warrants evidenced hereby, unless exercised
prior thereto, shall thereafter be void.

     The Warrants evidenced by this Warrant Certificate are part of a duly
authorized issue of Warrants pursuant to the Warrant Agreement, which Warrant
Agreement is hereby incorporated by reference in and made a part of this
instrument and is hereby referred to for a description of the rights, limitation
of rights, obligations, duties and immunities thereunder of the Company and the
holders (the words "holders" or "holder" meaning the registered holders or
registered holder) of the Warrants.

     The Warrant Agreement provides that upon the occurrence of certain events
the Exercise Price and/or number of the Company's 

 
securities issuable thereupon may, subject to certain conditions, be adjusted.
In such event, the Company will, at the request of the holder, issue a new
Warrant Certificate evidencing the adjustment in the Exercise Price and the
number and/or type of securities issuable upon the exercise of the Warrants;
provided, however, that the failure of the Company to issue such new Warrant
- --------  -------                  
Certificates shall not in any way change, alter or otherwise impair, the rights
of the holder as set forth in the Warrant Agreement.

     Upon due presentment for registration of transfer of this Warrant
Certificate at an office or agency of the Company, a new Warrant Certificate or
Warrant Certificates of like tenor and evidencing in the aggregate a like number
of Warrants shall be issued to the transferee(s) in exchange for this Warrant
Certificate, subject to the limitations provided herein and in the Warrant
Agreement, without any charge except for any tax or other governmental charge
imposed in connection with such transfer.

     Upon the exercise of less than all of the Warrants evidenced by this
Warrant Certificate, the Company shall forthwith issue to the holder hereof a
new Warrant Certificate representing such number of unexercised Warrants.

     The Company may deem and treat the registered holder(s) hereof as the
absolute owner(s) of this Warrant Certificate (notwithstanding any notation of
ownership or other writing hereon made by anyone), for the purpose of any
exercise hereof, and of any distribution to the holder(s) hereof, and for all
other purposes, and the Company shall not be affected by any notice to the
contrary.

     All terms used in this Warrant Certificate which are defined in the Warrant
Agreement shall have the meanings assigned to them in the Warrant Agreement.

     IN WITNESS WHEREOF, the Company has caused this Warrant Certificate to be
duly executed under its corporate seal.

Dated as of June 6, 1997

MEDCROSS, INC.


By /s/ John Edwards
  -------------------------
Name: John Edwards
      ---------------------  
Title: President
       --------------------

[SEAL]

 
                         [FORM OF ELECTION TO PURCHASE]



     The undersigned hereby irrevocably elects to exercise the right,
represented by this Warrant Certificate, to purchase __________ shares of Common
Stock and herewith tenders in payment for such securities a certified or
official bank check payable in New York Clearing House Funds to the order of
Medcross Inc. in the amount of $____________, all in accordance with the terms
hereof.  The undersigned requests that a certificate for such securities be
registered in the name of _________________________ whose address is
_____________________________________________ and that such Certificate be
delivered to _______________________ whose address is
___________________________________________.

Dated:

Signature _____________________
(Signature must conform in all
respects to name of holder as
specified on the face of the
Warrant Certificate.)


_______________________________
Insert Social Security or Other
Identifying Number of Holder

 
                                  ASSIGNMENT FORM
                                  ---------------


The Holder hereby assigns and transfers unto

Name ______________________________________________________________
     (Please typewrite or print in block letters)

Address ___________________________________________________________
        ___________________________________________________________

the right to purchase Common Stock of _____________ represented by this Warrant
to the extent of _______________ shares of Common Stock as to which such right
is exercisable and does hereby irrevocably constitute and appoint
_____________________________ Attorney, to transfer the same on the books of
_____________ with full power of substitution in the premises.

Date: ___________________, 199_


______________________________
Name of Registered Holder


______________________________
Signature



______________________________
Signature, if held jointly