Committee Composition

	Audit Committee	Compensation Committee	Nominating and Corporate Governance Committee	Science Committee
Paul L. Berns	Audit Committee	Compensation Committee
Nathaniel E. David, Ph.D.				Science Committee
Keith R. Leonard
Gilmore O’Neill, M.B.				Science Committee
Margo Roberts, Ph.D.			Nominating and Corporate Governance Committee	Science Committee
Michael Samar	Audit Committee	Compensation Committee
Camille D. Samuels	Audit Committee		Nominating and Corporate Governance Committee

= Chairperson = Member = Chairman of the Board = Financial Expert