ADVISORY: Dec. 13 Teleconference: Allen Institute for Brain Science Will Announce First Major Data Release Results From Its Brain Atlas.

News Embargoed Until 12:01 a.m. PST on Dec. 13, 2004

WHAT:  Seattle-based Allen Institute for Brain Science (AIBS) is
       hosting a media teleconference to announce and discuss the
       first major data release from its Allen Brain Atlas initiative
       and its potential impact on the study of brain function,
       disease and human behavior.

       AIBS was founded in September 2003 with a $100 million
       commitment from investor and philanthropist Paul G. Allen; its
       first project is the Allen Brain Atlas, a neurogenomic atlas of
       the mouse brain, which illustrates functional anatomy through a
       collection of gene expression maps, brain circuits and cell
       locations.

WHY:   AIBS is releasing gene expression data for nearly 2,000 genes
       (about 10 percent of the mouse genome), together with tools to
       analyze the data in a Web-based application at
       http://www.brainatlas.org.

       Because the mouse genome has already been sequenced,
       researchers know what genes it contains. The Allen Brain Atlas
       will show to what extent those genes are active and where they
       are located in the mouse brain, information which has not
       previously been available on this comprehensive scale. Because
       approximately 90 percent of the mouse genome is the same as the
       human genome, the Allen Brain Atlas findings offer researchers
       a gateway to understanding how genes, brains and behavior are
       linked in humans.

       Because all Atlas findings are publicly available, the project
       will help scientists around the world further research into the
       development and function of the human brain, with potentially
       far-reaching implications for scientists studying everything
       from brain disease and degenerative illnesses to addiction
       disorders and emotion.

WHO:   Spokespeople on the teleconference will include:
       --  Allan Jones, Ph.D., senior director, Atlas Operations, AIBS
       --  Ed Lein, Ph.D., director of Neuroscience, AIBS
       --  Michael Hawrylycz, Ph.D., director of Informatics, AIBS
       --  Carey Teemer, director of Technology Programs, Vulcan Inc.
       --  Marc Tessier-Lavigne, Ph.D., AIBS Scientific Advisory
           Board, Genentech Inc.
       --  David Anderson, Ph.D., AIBS Scientific Advisory Board,
           California Institute of Technology
       --  Arthur W. Toga, Ph.D., AIBS Scientific Advisory Board, UCLA
           Laboratory of Neuro Imaging

WHEN:  Monday, Dec. 13 at 9 a.m. PST. Official remarks will be
       followed by a live Q&A session. Details on how to submit
       questions will be provided at the beginning of the conference
       call.

HOW:   Dial-in number: 888-311-9051 (toll-free in the United States
       and Canada) or 206-902-3250 (international)
       Participant code: 37766 followed by the # symbol


PRESS ONLY:

For more information or to confirm participation in the call, contact:

Lisa Osborne, Waggener Edstrom Bioscience, 425-638-7134,
[e-mail]

Jill Bailey, Waggener Edstrom Bioscience, 503-443-7869,
[e-mail]