1. Department of Reproductive Medicine (S.B.Z.S., K.P.T., M.L.R., M.C.P., P.L.M., A.S.K.), University of California, San Diego, La Jolla, California 92093
2. Department of Molecular, Cellular, and Developmental Biology (M.K.H.-P.), University of California, Los Angeles, Los Angeles, California 90095