Affiliation: | a University of California, San Diego, School of Medicine, M-013, LaJolla, CA 92093, U.S.A. b Cecil H. and Ida Green Center for Reproductive Biology Sciences, University of Texas Southwestern Medical Center, Dallas, TX 75235, U.S.A. c Department of Biochemistry, School of Medicine, University of Louisville, Louisville, KY 40292, U.S.A. |