Board of Directors

Stephen A. Sherwin, M.D.
Chairman and Chief Executive Officer
Cell Genesys, Inc.

David W. Carter
Director
Caliper Life Sciences

Nancy M. Crowell
Retired Managing Director
Flagship Ventures

James M. Gower
Chairman and Chief Executive Officer
Rigel Pharmaceuticals, Inc.

John T. Potts, Jr., M.D.
Director of Research and Physician-in-Chief Emeritus,

Massachusetts General Hospital
Jackson Distinguished Professor of Clinical Medicine,
Harvard School of Medicine

Thomas E. Shenk, Ph.D.
Elkins Professor Chairman,
Department of Molecular Biology

Princeton University

Eugene L. Step
Retired Executive Vice President and President,
Pharmaceutical Division
Eli Lilly & Company

Inder M. Verma, Ph.D.
Professor of Molecular Biology and Virology
The Salk Institute

Dennis L. Winger
Senior Vice President and Chief Financial Officer
Applera Corporation