1. From INSERM U769 (F.R., A.A.-G., F.L., R.F., G.V.), Châtenay-Malabry, France; Univ-Paris-Sud (F.R., A.A.-G., F.L., R.F., G.V.), U769 Faculté de Pharmacie, Châtenay-Malabry, France; Division of Reproductive Biology (K.H., M.C.), Department of Gynecology and Obstetrics, Stanford University, California; and Department of Pharmacology (D.M.F.C.), University of Cambridge, United Kingdom.