GDF9-β promotes folliculogenesis in sheep ovarian transplantation onto the chick embryo chorioallantoic membrane (CAM) in cryopreservation programs. - Vatanparast, Mahboubeh; Khalili, Mohammad Ali; Yari, Nahid; Woodward, Bryan; Mohsenzadeh, Mehdi (Archives of Gynecology & Obstetrics, 2018)