Center of Clinical Reproductive Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China;
Division of Endocrinology, Harbor-UCLA Medical Center,CA90502, USA;
Jiangsu Institute for Family Planning, Nanjing 210029, China;
Center of Clinical Reproductive Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China;
Jiangsu Institute for Family Planning, Nanjing 210029, China;
Jiangsu Institute for Family Planning, Nanjing 210029, China;
Jiangsu Institute for Family Planning, Nanjing 210029, China;
Center of Clinical Reproductive Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China;
Center of Clinical Reproductive Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China;
Center of Clinical Reproductive Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China;
Center of Clinical Reproductive Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China;
Progesterone; Germ cell apoptosis; Male contraception; Spermatogenesis;