Deirdre Y. Gillespie, M.D.
President and Chief Executive Officer

Deirdre Y. Gillespie, M.D., President, Chief Executive Officer and Assistant Secretary, joined us in March 2006 as a director, and as President and Chief Executive Officer. She was appointed Assistant Secretary in February 2007. Dr. Gillespie previously served as the President and Chief Executive Officer of Oxxon Therapeutics, Inc., a privately held pharmaceutical company, from 2001 to 2005. Prior to that, she served as Chief Operating Officer of Vical, Inc., from 2000 to 2001, and Executive Vice President & Chief Business Officer, from 1998 to 2000. Dr. Gillespie also held a number of positions at DuPont Merck Pharmaceutical Company, including Vice President of Marketing, from 1991 to 1996. Dr. Gillespie received her M.B.A. from the London Business School and her M.D. and B.Sc. from London University.

Gail A. Sloan, CPA
Vice President of Finance and Secretary

Gail A. Sloan, CPA, Vice President of Finance and Secretary, joined us in 1996 as Assistant Controller, was promoted to Controller in 1997, to Senior Director of Finance in 2002 and to Vice President of Finance in 2004. She was appointed Secretary in 1999. Prior to joining us, from 1993 to 1996, Ms. Sloan served as Assistant Controller at Affymax Research Institute, a publicly held drug-discovery research company and formerly a part of the Glaxo Wellcome Group. From 1985 to 1993, she progressed to the position of Audit Manager with Ernst & Young LLP. Ms. Sloan holds a B.S. in Business Administration from California Polytechnic State University, San Luis Obispo and is a Certified Public Accountant.

Craig R. Smith, M.D.
Chairman of the Board and President of Williston Consulting

Craig R. Smith, M.D. has been a director since 2004 and Chairman of the Board since 2006. Dr. Smith is currently Executive Vice President, Chief Operating Officer and director of Algenol Biofuels Inc., a privately held industrial biotechnology company, and the President of Williston Consulting, LLC, a consulting firm providing advisory services to pharmaceutical and biotechnology companies. From 1993 to 2004, Dr. Smith served as Chairman, President and Chief Executive Officer of Guilford Pharmaceuticals, Inc., a publicly held pharmaceutical company. From 1988 to 1992, Dr. Smith was Vice President of Clinical Research and from 1992 to 1993, Senior Vice President of Business and Market Development at Centocor, Inc., a publicly held biotechnology company, which is now a wholly-owned subsidiary of Johnson & Johnson. From 1975 to 1988, he served on the faculty of the Department of Medicine at the Johns Hopkins University School of Medicine. Dr. Smith is a member of the Johns Hopkins Alliance for Science and a member of the board of directors of Adams Express Company, a publicly held closed-end equity investment company, Petroleum & Resources Corporation, a publicly held equity investment company specializing in energy and natural resources, and Depomed, Inc., a publicly held specialty pharmaceutical company. Dr. Smith holds an M.D. from the State University of New York at Buffalo and trained in Internal Medicine at the Johns Hopkins Hospital from 1972 to 1975.

Robert A. Fildes, Ph.D.
President, SB2, Inc.

Robert A. Fildes, Ph.D. has been a director since 1991. Since January 1998, Dr. Fildes has served as President of SB2, Inc., a privately held company that licenses antibody technology. From June to December 1998, Dr. Fildes served as Chief Executive Officer of Atlantic Pharmaceuticals, a publicly held company in the field of biotechnology. From 1993 to 1997, Dr. Fildes was the Chairman and Chief Executive Officer of Scotgen Biopharmaceuticals, Inc., a privately held company in the field of human monoclonal antibody technology. From 1990 to 1993, Dr. Fildes was an independent consultant in the biopharmaceutical industry. He was the president and Chief Executive Officer of Cetus Corporation, a publicly held biotechnology company, from 1982 to 1990. From 1980 to 1982, Dr. Fildes was the President of Biogen, Inc., which merged with IDEC Pharmaceuticals Corporation in 2003 to form Biogen Idec, a publicly held biopharmaceutical company, and from 1975 to 1980, he was the Vice President of Operations for the Industrial Division of Bristol-Myers Squibb Company. From April 2002 to April 2003, Dr. Fildes was a director of Polymerat Pty. Ltd. (now Bio-Layer Pty. Ltd.), a privately held company that develops surfaces for carrying out biological reactions. Dr. Fildes is currently a director of Inimex Pharmaceuticals, Inc., a privately held Canadian biotechnology company. Dr. Fildes holds a D.C.C. degree in Microbial Biochemistry and a Ph.D. in Biochemical Genetics from the University of London.

Deirdre Y. Gillespie, M.D.
President and Chief Executive Officer

Deirdre Y. Gillespie, M.D., joined the Company in 2006. From 2001 to 2005 she was President and Chief Executive Officer of Oxxon Therapeutics, a privately held pharmaceutical company developing immunotherapies for chronic infectious diseases and cancer. Previously, Dr. Gillespie was Chief Operating Officer at Vical Inc, a publicly-traded gene delivery company focusing on immunotherapeutics and cancer vaccines. Dr Gillespie was also Executive Vice President and Chief Business Officer at Vical. Prior to joining Vical in 1998, she was Vice President Business Development at 3-Dimensional Pharmaceuticals and held senior positions at DuPont Merck Pharmaceutical Company, in both Europe and the United States, including Vice President, Marketing. Prior to completing five years of clinical practice in London and Oxford, Dr. Gillespie spent five years in clinical development with Sandoz Pharma AG (Novartis) in the UK and Switzerland. Dr. Gillespie received her M.B.A. from the London Business School and her M.D., and B.Sc. from London University.

Stephen M. Martin
Former President, CIBA Vision Corporation; Vice President,Venture Opportunities, CIBA Vision; Partner, Hi-tech Partners Group; General Partner, Merritt Capital Services

Stephen M. Martin has been a director since April 2000. Mr. Martin is currently CEO Partner of Hi Tech Partners, LLC, a privately held consulting firm for executive management of early stage technology businesses. In April 2009, he joined QSpex Technologies, Inc., an early-stage private Opthalmic (Spectacle) Lens manufacturing company as Chief Business Officer. In June 2001, Mr. Martin retired from CIBA Vision Corporation, a Novartis Company engaged in the research, manufacture and sale of contact lenses, lens care products and ophthalmic pharmaceuticals. Mr. Martin founded CIBA Vision in 1980. Mr. Martin was President of CIBA Vision Corporation, USA from 1995 to 1998 and President of Ciba Vision Ophthalmics, USA, the company's ophthalmic pharmaceutical division, which he founded, from 1990 until 1998. He served as CIBA Vision's Vice President of Venture Opportunities from 1998 until his retirement in 2001. Mr. Martin currently serves as a director of QSpex Technologies, Inc., a privately held spectacle manufacturing company, OcuCure Therapeutics, Inc., a privately held ophthalmic pharmaceutical development company and NeoVista, Inc., a privately held medical device company. From 2003 to 2005, Mr. Martin served as a director of Alimera Sciences, Inc., a privately held ophthalmic pharmaceutical company. Mr. Martin is the inventor on six issued U.S. patents and a number of European patents. Mr. Martin holds a B.A. degree from Wake Forest University and attended the Woodrow Wilson College of Law.

Frank E. Young, M.D., Ph.D.
Former Commissioner of the United States Food & Drug Administration

Frank E. Young, M.D., Ph.D. has been a director since 2005. Dr. Young is a former Commissioner of the United States Food and Drug Administration ("FDA") and has had over a 40-year career in medicine, academia and government. After numerous academic appointments, Dr. Young served as Chairman of the Department of Microbiology and Professor of Microbiology, of Pathology, and of Radiation Biology and Biophysics at the University of Rochester, New York. Subsequently, he became Dean of the School of Medicine and Dentistry, Director of the Medical Center and Vice President for Health Affairs at the University of Rochester. Dr. Young joined the Department of Health and Human Services as Commissioner of the FDA and Assistant Surgeon General (Rear Admiral, USPHS) in 1984. Under Presidents Ronald Reagan, George H.W. Bush, and William J. Clinton, Dr. Young served as Commissioner of the FDA, Deputy Assistant Secretary and Director of the Office of Emergency Preparedness, Director of the National Disaster Medical System and as a member of the Executive Board of the World Health Organization (presidential appointee). Dr. Young currently serves as the Chief Executive Officer of Cosmos Alliance and is a partner of Essex Woodlands Health Ventures. In addition, Dr. Young currently serves on the board of Golden Pond Healthcare, publicly held special purpose acquisition company and the boards of the following private companies: Agennix, Inc. and Elusys Therapeutics, Inc. Dr. Young attended Union College and holds an M.D. degree from the University of the State of New York, Upstate Medical Center, where he graduated cum laude, and a Ph.D. degree from Case Western Reserve University.