EXHIBIT 10.24(d)

                              THIRD MODIFICATION OF
                    THIRD AMENDED AND RESTATED LOAN AGREEMENT


     THIS  MODIFICATION  is made  and  entered  into as of the 12th day of June,
1998, by and between CRYOLIFE,  INC., a Florida  corporation  ("Borrower"),  and
NATIONSBANK,  N.A., a national  banking  association  which is the  successor by
merger to  NationsBank,  N.A.  (South),  the  successor by merger to Bank South,
formerly known as Bank South, N.A. ("Lender").

                               Statement of Facts

     Borrower and Lender are parties to that certain  Third Amended and Restated
Loan Agreement, dated as of August 30, 1996, as amended by First Modification of
Third Amended and Restated Loan  Agreement,  dated as of April 14, 1997,  and as
further  amended by Second  Modification  of Third  Amended  and  Restated  Loan
Agreement, dated as of December 16, 1997 (the "Loan Agreement").

     Borrower  and  Lender  desire  to  further  amend  the  Loan  Agreement  as
hereinafter provided.

     NOW,  THEREFORE,  for and in  consideration  of the premises and the mutual
agreements,  warranties  and  representations  herein made, as well as $10.00 in
hand  paid by each  party  hereto to the  other,  and  other  good and  valuable
consideration,  the  receipt  and  sufficiency  which are  hereby  acknowledged,
Borrower  and Lender  agree that all  capitalized  terms  used  herein  (and not
otherwise  defined  herein)  shall  have  the  meanings  given  them in the Loan
Agreement as herein amended and Borrower and Lender further agree as follows:

                               Statement of Terms

     1. The Loan Agreement is hereby amended  effective as of the date hereof by
deleting  from  Section  101  thereof  the   definition  of  the  term  "Maximum
Availability"  and  substituting  in  lieu  thereof  the  following  replacement
definition:

          "Maximum  Availability"  shall mean $2,000,000,  as such amount may be
     reduced or amended pursuant to this Agreement.

     2. The Loan  Agreement is hereby further  amended  effective as of the date
hereof by deleting the first  sentence of Section 201(e) thereof in its entirety
and substituting in lieu thereof the following:

     Borrower  shall pay to Lender  unused  facility  fees for  Borrower's  Loan
     facility  hereunder  during the Revolving Loan Period computed on the daily
     average unused portion of the Maximum  Availability  at a rate per annum of
     one-quarter of one percent (.25%).

     3. The Loan  Agreement is hereby  further  amended by deleting  Exhibit A-1
attached to the Loan Agreement and  substituting in lieu thereof the new Exhibit
A-1 attached hereto.

     4. The effectiveness of this Modification is subject to:

     (a)  the prior or concurrent receipt by Lender of this  Modification,  duly
          executed by Borrower;

     (b)  the prior or concurrent  receipt by Lender of a replacement  Revolving
          Note in the principal face amount of the reduced Maximum Availability;

     (c)  any and all  guarantors  of the  Loans  shall  have  consented  to the
          execution,  delivery and performance of this  Modification and the new
          Note and all of the transactions contemplated hereby by signing one or
          more  counterparts  of  this  Modification  in the  appropriate  space
          indicated below and returning same to Lender;

     (d)  the prior or concurrent receipt by Lender of a certificate of Borrower
          in the form of Exhibit B attached  hereto,  and a certificate  of each
          Guarantor in the form of Exhibit C attached hereto;

     (e)  the payment of all fees and  expenses due from  Borrower  hereunder as
          set forth in Section 7 below; and

     (f)  the  truth  and  accuracy  in  all  material  respects  of  Borrower's
          representations and warranties in Section 6 below.

     5. Except as expressly  modified herein, the Loan Agreement shall remain in
full force and effect. Nothing contained herein shall be deemed to be or operate
as a novation  or an accord and  satisfaction  of the Loan  Agreement  or of any
indebtedness arising thereunder.

     6.  Borrower  hereby  represents  and  warrants  to  Lender  that  (a) this
Modification and the  supplemental  Financing  Documents  executed in connection
herewith  have been duly  authorized,  executed and  delivered by Borrower,  (b)
after  giving  effect to this  Modification,  no Default or Event of Default has
occurred and is  continuing  as of this date and (c) all of the  representations
and  warranties  made by Borrower in the Loan  Agreement are true and correct in
all material respects on and as of the date of this Modification  (except to the
extent  that any such  representations  or  warranties  expressly  referred to a
specific  prior  date).  Any  breach  by  Borrower  of its  representations  and
warranties  contained  in this  Section  shall be an Event  of  Default  for all
purposes of the Loan Agreement.

     7. Borrower further agrees to reimburse Lender for all reasonable  expenses
(including  without  limitation  attorney's  fees)  incurred  by  Lender  in the
negotiation,   documentation  or  consummation  of  this  Modification  and  the
transactions contemplated hereby.

     8. This Modification shall be governed and construed in accordance with the
laws of the State of Georgia and this Modification shall inure to the benefit of
and shall be binding upon the parties hereto and their respective successors and
permitted assigns.

     9. This  Modification  may be executed in  multiple  counterparts,  each of
which  shall be deemed to be an  original  and all of which when taken  together
shall constitute one and the same instrument.

     IN WITNESS WHEREOF, Lender has executed this Modification, and Borrower has
executed  this  Modification  and placed its seal hereon,  all as of the day and
year first above set forth.

                                     LENDER:

                                     NATIONSBANK, N.A.



                                     By: _____________________________________
                                         Vice President


                                     BORROWER:

                                     CRYOLIFE, INC.



                                     By:_____________________________________
                                        Title:

                                                  (CORPORATE SEAL)





                              CONSENT OF GUARANTOR


     All  capitalized  terms used herein and not otherwise  defined herein shall
have the  meanings  given  such terms in the Third  Amended  and  Restated  Loan
Agreement,  dated as of August 30, 1996, between CryoLife, Inc. ("Borrower") and
NationsBank,  N.A., successor by merger to NationsBank, N.A. (South) ("Lender"),
as amended (the "Loan Agreement").

     The undersigned  acknowledges that it is indebted to Lender under the terms
of the  Guaranty  Agreement,  dated  as of  August  30,  1996,  executed  by the
undersigned  in favor of Lender (the  "Guaranty"),  and that the  Guaranty is in
full force and effect as of the date hereof,  has not been  amended,  rescinded,
revoked or terminated  by such party  through the date hereof,  and continues to
constitute  the  legal,   valid  and  binding   obligation  of  the  undersigned
enforceable   against  the  undersigned  in  accordance  with  its  terms.   The
undersigned hereby confirms and reaffirms all of its obligations and liabilities
to Lender under the Guaranty  and further  confirms and agrees that  pursuant to
the Guaranty,  the undersigned has guaranteed the payment and performance of the
Revolving  Note,  the  Additional  Term  Note and each  Hedge  Agreement  now or
hereafter  in effect,  and all  obligations,  liabilities  and  indebtedness  of
Borrower arising thereunder or evidenced thereby.

     The undersigned  also consents to and approves the execution,  delivery and
performance  of the  Third  Modification  of Third  Amended  and  Restated  Loan
Agreement,  dated as of the date hereof, between Lender and Borrower (the "Third
Modification"),  the new  Revolving  Note  executed and  delivered in connection
therewith,  and all the transactions  contemplated thereby. The undersigned also
agrees that all indebtedness,  obligations and liabilities of Borrower to Lender
which may now or  hereafter  arise  under or by  reason  of the Loan  Agreement,
including without limitation Borrower's obligations in respect of Loans advanced
pursuant to the Loan  Agreement,  and all  obligations  arising  under any Hedge
Agreement,  constitute  part of the  obligations of Borrower to Lender which are
guaranteed by the undersigned under the terms and conditions of the Guaranty.

     SIGNED, SEALED AND DELIVERED as of the 12th day of June, 1998.

                                     CRYOLIFE INTERNATIONAL, INC.



                                     By:_____________________________________
                                     Title:__________________________________

                                                    (CORPORATE SEAL)




                              CONSENT OF GUARANTOR


     All  capitalized  terms used herein and not otherwise  defined herein shall
have the  meanings  given  such terms in the Third  Amended  and  Restated  Loan
Agreement,  dated as of August 30, 1996, between CryoLife, Inc. ("Borrower") and
NationsBank,  N.A., successor by merger to NationsBank, N.A. (South) ("Lender"),
as amended (the "Loan Agreement").

     The undersigned  acknowledges that it is indebted to Lender under the terms
of  the  Guaranty  Agreement,  dated  as of  April  14,  1997,  executed  by the
undersigned  in favor of Lender (the  "Guaranty"),  and that the  Guaranty is in
full force and effect as of the date hereof,  has not been  amended,  rescinded,
revoked or terminated  by such party  through the date hereof,  and continues to
constitute  the  legal,   valid  and  binding   obligation  of  the  undersigned
enforceable   against  the  undersigned  in  accordance  with  its  terms.   The
undersigned hereby confirms and reaffirms all of its obligations and liabilities
to Lender under the Guaranty  and further  confirms and agrees that  pursuant to
the Guaranty,  the undersigned has guaranteed the payment and performance of the
Revolving  Note,  the  Additional  Term  Note and each  Hedge  Agreement  now or
hereafter  in effect,  and all  obligations,  liabilities  and  indebtedness  of
Borrower arising thereunder or evidenced thereby.

     The undersigned  also consents to and approves the execution,  delivery and
performance  of the  Third  Modification  of Third  Amended  and  Restated  Loan
Agreement,  dated as of the date hereof, between Lender and Borrower (the "Third
Modification"),  the new  Revolving  Note  executed and  delivered in connection
therewith,  and all the transactions  contemplated thereby. The undersigned also
agrees that all indebtedness,  obligations and liabilities of Borrower to Lender
which may now or  hereafter  arise  under or by  reason  of the Loan  Agreement,
including without limitation Borrower's obligations in respect of Loans advanced
pursuant to the Loan  Agreement,  and all  obligations  arising  under any Hedge
Agreement,  constitute  part of the  obligations of Borrower to Lender which are
guaranteed by the undersigned under the terms and conditions of the Guaranty.

     SIGNED, SEALED AND DELIVERED as of the 12th day of June, 1998.

                                     IDEAS FOR MEDICINE, INC.



                                     By:_____________________________________
                                     Title:__________________________________

                                                   (CORPORATE SEAL)