Committee Composition

	Audit Committee	Compensation Committee	Nominating and Corporate Governance Committee
Xiangmin Cui, PhD			Nominating and Corporate Governance Committee
Carl L. Gordon, PhD, CFA		Compensation Committee	Nominating and Corporate Governance Committee
Pierre Legault	Audit Committee	Compensation Committee	Nominating and Corporate Governance Committee
Beth Seidenberg, MD	Audit Committee	Compensation Committee
Stella Xu, MD	Audit Committee

= Chairperson = Member = Financial Expert