Committee Composition

	Audit Committee	Compensation Committee	Nominating & Corporate Governance Committee	Drug Discovery
Jeffrey Chodakewitz, M.D.			Nominating & Corporate Governance Committee	Drug Discovery
Gary Ginsberg	Audit Committee
Rosana Kapeller-Libermann, M.D., Ph.D.		Compensation Committee		Drug Discovery
Michael Lynton	Audit Committee		Nominating & Corporate Governance Committee
Gary Sender	Audit Committee	Compensation Committee
Nancy A. Thornberry			Nominating & Corporate Governance Committee	Drug Discovery
Timothy M. Wright, M.D.		Compensation Committee		Drug Discovery

= Chairperson = Member = Chairman of the Board