EXHIBIT 10.24 AMENDMENT TO THE LICENSE AGREEMENT BY AND BETWEEN GEN-PROBE INCORPORATED, BIOANALYSIS LIMITED AND THE UNIVERSITY OF WALES COLLEGE OF MEDICINE DATED JANUARY 21, 1986 This Agreement is entered into as of this 19th day of November, 1998 by...

CERTAIN MATERIAL (INDICATED BY AN ASTERISK) HAS BEEN OMITTED FROM THIS DOCUMENT
PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT. THE OMITTED MATERIAL HAS BEEN
FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.

                                                                   EXHIBIT 10.24

          AMENDMENT TO THE LICENSE AGREEMENT BY AND BETWEEN GEN-PROBE
         INCORPORATED, BIOANALYSIS LIMITED AND THE UNIVERSITY OF WALES
                   COLLEGE OF MEDICINE DATED JANUARY 21, 1986

This Agreement is entered into as of this 19th day of November, 1998 by and
between Gen-Probe Incorporated, 00000 Xxxxxxx Xxxxxx Xxxxx, Xxx Xxxxx,
Xxxxxxxxxx 00000 ("Gen-Probe"), Bioanalysis Limited, 5 Chiltern Close, Xxxxxxx
Xxxxxxxxxx Xxxx, Xxxxxxx XX0 0XX, Xxxxxx Xxxxxxx ("Bioanalysis") and the
University of Wales College of Medicine, Xxxxx Xxxx, Xxxxxxx XX0 0XX, Xxxxxx
Xxxxxxx ("UWCM").

WHEREAS, Gen-Probe, Bioanalysis and UWCM are parties to a License Agreement
dated January 21, 1986 (the "Agreement"); and

WHEREAS, the parties desire to make certain modifications to the Agreement;

NOW, THEREFORE, the parties hereto agree as follows:

Article 1, Subpart G of the Agreement shall be amended to read as follows:

[***]

IN WITNESS WHEREOF, Gen-Probe, Bioanalysis and UWCM have duly executed this
Amendment on the dates indicated below.

*** Certain information on this page has been omitted and filed separately with
the Commission. Confidential treatment has been requested with respect to the
omitted portions.

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GEN-PROBE INCORPORATED                            BIOANALYSIS, LTD.


/s/ X.X. Xxxxxxxx                                  /s/ XX Xxxxxxxx
-----------------------------                     ------------------------------
Signature                                         Signature

     X.X. Xxxxxxxx                                     XX Xxxxxxxx
-----------------------------                     ------------------------------
Name                                              Name
        CEO                                               Director
-----------------------------                     ------------------------------
Title                                             Title
     11-24-98                                               11.20.1998
-----------------------------                     ------------------------------
Date                                              Date


UNIVERSITY OF WALES
COLLEGE OF MEDICINE

/s/     X.X. Xxxxxx
-----------------------------
Signature
     X.X. Xxxxxx
-----------------------------
Name
     Secretary
-----------------------------
Title
         7.12.98
-----------------------------
Date









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