RNS Number:0474D
GoldmanSachs International
16 May 2006

                                                                       FORM 38.5

                 DEALINGS BY CONNECTED EXEMPT PRINCIPAL TRADERS
             (Rule 38.5 of the City Code on Takeovers and Mergers)



1.         KEY INFORMATION


Name of exempt principal trader                Goldman Sachs International
Company dealt in                               CAMBRIDGE ANTIBODY TECHNOLOGY GROUP PLC
Class of relevant security to which the        Ordinary Shares
dealings being disclosed relate (Note 1)
Date of dealing                                15 May 2006



2.         DEALINGS (Note 2)

(a)        Purchases and sales


Total number of securities purchased   Highest price paid (Note 3)           Lowest price paid (Note 3)

704247                                 24.4685 GBP                           12.8405 GBP



Total number of securities sold        Highest price received (Note 3)       Lowest price received (Note 3)

111750                                 13.0691 GBP                           13.0691 GBP



(b)       Derivatives transactions (other than options)

Product name,         Long/short (Note 4)       Number of securities (Note 5)        Price per unit (Note 3)
e.g. CFD
CFD                   Short                     2000                                 12.9908 GBP
CFD                   Long                      50000                                12.9219 GBP
CFD                   Long                      78205                                12.9396 GBP
CFD                   Long                      33605                                12.9396 GBP
CFD                   Long                      16182                                12.9396 GBP
CFD                   Long                      200000                               12.9193 GBP
CFD                   Long                      2950                                 12.9841 GBP
CFD                   Long                      52137                                12.9626 GBP
CFD                   Long                      22403                                12.9626 GBP
CFD                   Long                      10788                                12.9626 GBP
CFD                   Long                      34500                                12.884 GBP
CFD                   Long                      5500                                 12.884 GBP
CFD                   Long                      43000                                12.884 GBP
CFD                   Long                      13500                                12.884 GBP
CFD                   Long                      3500                                 12.884 GBP
CFD                   Long                      4227                                 12.9129 GBP





(c)        Options transactions in respect of existing securities

(i)         Writing, selling, purchasing or varying


Product name,   Writing, selling, Number of securities to  Exercise       Type, e.g.   Expiry     Option money
                  purchasing,     which the option relates                American,
e.g. call       varying etc.      (Note 5)                 price          European     date       paid/received per
option                                                                    etc.                    unit (Note 3)





(ii)        Exercising


Product name, e.g. call option         Number of securities                  Exercise price per unit (Note 3)





3.         OTHER INFORMATION



Agreements, arrangements or understandings relating to options or derivatives




Full details of any agreement, arrangement or understanding between the person
disclosing and any other person relating to the voting rights of any relevant
securities under any option referred to on this form or relating to the voting
rights or future acquisition or disposal of any relevant securities to which any
derivative referred to on this form is referenced.  If none, this should be
stated.





Date of disclosure                                                16 May 2006
Contact name                                                      Peter Highton
Telephone number                                                  +44-207-774-1935
Name of offeree/offeror with which connected                      Astrazeneca
Nature of connection (Note 6)                                     Advisor



Notes

The Notes on Form 38.5 can be viewed on the Takeover Panel's website at
www.thetakeoverpanel.org.uk


                      This information is provided by RNS
            The company news service from the London Stock Exchange
END

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