1. Divisions of Reproductive Biology Research (M.E.P., S.R., S.E.B., Y.-H.C.) Department of Obstetrics and Gynecology, Feinberg School of Medicine at Northwestern University, Chicago, Illinois 60611;
2. Reproductive Endocrinology and Infertility (M.E.P., M.M., S.E.B.), Department of Obstetrics and Gynecology, Feinberg School of Medicine at Northwestern University, Chicago, Illinois 60611;
3. Department of Physiology (H.S.) David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, California 90095;
4. Jules Stein Eye Institute (H.S.), David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, California 90095;
5. Brain Research Institute (H.S.), University of California Los Angeles, Los Angeles, California 90095