Antiapoptotic Agent Sphingosine-1-Phosphate Protects Vitrified Murine Ovarian Grafts. - Tsai, Yung-Chieh; Tzeng, Chii-Ruey; Wang, Chia-Woei; Hsu, Ming-I; Tan, Shun-Jen; Chen, Chi-Huang (Reproductive Sciences, 2014)