Very early and transient 17 β-estradiol secretion by fetal sheep ovary. In vitro study P. MAULEON, Jacqueline BEZARD and M. TERQUIAnn. Biol. anim. Bioch. Biophys., 17 3A (1977) 399-401DOI: https://doi.org/10.1051/rnd:19770315