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February 22, 2005

MedImmune Allocates an Additional $100 Million to Venture Capital Fund

GAITHERSBURG, Md., Feb. 22 /PRNewswire-FirstCall/ -- MedImmune, Inc. (Nasdaq: MEDI) announced today that its board has allocated an additional $100 million to MedImmune Ventures, Inc., the company's venture capital subsidiary. MedImmune Ventures was created in July 2002 to invest in early-to-late-stage, public or private biotechnology companies focused on discovering and developing human therapeutics. To date, the fund has invested approximately $85 million in a dozen promising young companies, including: Applied Genetic Technologies Corp., Arriva Pharmaceuticals, Inc., Cellective Therapeutics, Inc., Critical Therapeutics, Inc., Inotek Pharmaceuticals Corp., Iomai Corp., GenPat77 AG, Micromet AG, Receptor BioLogix, Tercica, Inc., Vanda Pharmaceuticals, Inc., and VaxInnate Corp.

"MedImmune Ventures has been successful over the past two and one-half years in providing us with a window into new and innovative products and technologies being developed by exciting young biotech companies," said Wayne T. Hockmeyer, Ph.D., president of MedImmune Ventures. "We will continue to use our venture fund as a means by which we can work with such early-stage companies, helping them financially and strategically, while seeking to create value for MedImmune."

MedImmune Ventures primarily seeks to invest in areas of strategic interest to MedImmune, including infectious disease, immunology and oncology. The fund, which was seeded with an initial $100 million, generally invests up to $20 million per company with an average investment of about $7 million. The assessment of new investment opportunities is conducted by a team of experts at MedImmune, lead by Dr. Hockmeyer, that includes members from the company's research and development, clinical, sales and marketing, intellectual property, regulatory, corporate development, legal and finance departments.

About MedImmune, Inc.

MedImmune strives to provide better medicines to patients, new medical options for physicians, rewarding careers to employees, and increased value to shareholders. Dedicated to advancing science and medicine to help people live better lives, the company is focused on the areas of infectious diseases, cancer and inflammatory diseases. With approximately 2,000 employees worldwide, MedImmune is headquartered in Maryland. For more information, visit the company's website at http://www.medimmune.com.

This announcement may contain, in addition to historical information, certain forward-looking statements that involve risks and uncertainties. Such statements reflect management's current views and are based on certain assumptions. Actual results could differ materially from those currently anticipated as a result of a number of factors, including risks and uncertainties discussed in MedImmune's filings with the U.S. Securities and Exchange Commission. The company is developing several products for potential future marketing. There can be no assurance that such development efforts will succeed, that such products will receive required regulatory clearance or that, even if such regulatory clearance were received, such products would ultimately achieve commercial success.

SOURCE MedImmune, Inc.

CONTACT:
Media:
Jamie Lacey
+1-301-398-4035
or
Investors:
Peter Vozzo
+1-301-398-4358
or
John Filler
+1-301-398-4086
all of MedImmune, Inc.

Web site: http://www.medimmune.com
(MEDI)