AstraZeneca Successfully Completes Tender Offer for MedImmune Shares


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AstraZeneca Successfully Completes Tender Offer for MedImmune Shares

AstraZeneca PLC (“AstraZeneca”) today announced that it successfully completed
its tender offer for all of the outstanding shares of common stock of MedImmune,
Inc. (“MedImmune”).  The subsequent offering period for the offer expired at
12:00 midnight, New York City time, on Tuesday, June 5, 2007.  AstraZeneca
Biopharmaceuticals Inc., a wholly owned subsidiary of AstraZeneca, purchased in
the initial and subsequent offering periods of the offer a total of
approximately 218,750,474 MedImmune shares (excluding shares tendered through
notices of guaranteed delivery which have not to date been received),
representing approximately 91.6% of the outstanding shares of MedImmune.

As previously announced, AstraZeneca expects to effect, without a vote or
meeting of MedImmune's stockholders, a short-form merger on or about June 18,
2007 to complete the MedImmune acquisition.  Following the merger, MedImmune
will be an indirect wholly owned subsidiary of AstraZeneca.  In the merger, each
of the remaining shares of MedImmune common stock (other than any shares in
respect of which appraisal rights are validly exercised under Delaware law and
any shares owned by MedImmune, AstraZeneca or any of their subsidiaries) will be
converted into the right to receive the same $58.00 in cash per share, without
interest, that was paid in the tender offer.  Following the merger, MedImmune's
common stock will cease to be traded on the NASDAQ Global Select Market.

-Ends-
June 6th 2007


AstraZeneca	
Media Enquiries:	
Steve Brown / Edel McCaffrey (London)	(020) 7304 5033/5034
Staffan Ternby (Sweden)	070-557 4300
Emily Denney (Wilmington)	(302) 885 3451

Analyst/Investor Enquiries:	
Jonathan Hunt / Mina Blair / Karl Hård  (London)	(020) 7304 5087/5084/5322
Staffan Ternby (Sweden)	070-557 4300
Ed Seage / Jorgen Winroth (US)	(302) 886 4065/(212) 579 0506

Merrill Lynch (Financial Adviser to AstraZeneca)	+44 (0) 20 7628 1000
Richard Girling	
Deutsche Bank (Joint Corporate Broker to AstraZeneca)	+44 (0) 20 7545 8000
Charlie Foreman	

Goldman Sachs (Joint Corporate Broker to AstraZeneca)	+44 (0) 20 7774 1000
Phil Raper	
MEDIMMUNE	
Media Enquiries:	
Jamie Lacey	301-398-4035

Analyst/Investor Enquiries:	
Pete Vozzo	301-398-4358


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from Australia, Canada or Japan