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Mr. Tombros has served as a director since 1998 and in January 2008 was appointed chairman of the board. Since 2005, Mr. Tombros has served as professor and executive in residence in the Eberly College of Science B.S. / M.B.A. Program at the Pennsylvania State University. Prior to that, he was chairman of the board and chief executive officer of VivoQuest, a private biopharmaceutical company. From 1994 until June of 2001, Mr. Tombros served as president, chief executive officer and director of Enzon Pharma, a publicly held biopharmaceutical company. Prior to joining Enzon, Mr. Tombros spent 25 years with Pfizer Inc., a global healthcare company in a variety of senior management positions including vice president of marketing, senior vice president, and general manager of the Roerig Pharmaceuticals Division; executive vice president and director of Pfizer Pharmaceuticals Division; vice president of corporate strategic planning, and vice president, corporate officer of Pfizer Inc. Mr. Tombros serves on the Board of Directors of Alpharma Inc., Cambrex, Dendrite International Inc., PharmaNet Development Group, Inc. and Protalex, Inc. Mr. Tombros received B.S. and M.S. degrees from the Pennsylvania State University and an M.B.A. degree from the University of Pennsylvania Wharton Graduate School of Business. | 