title: Progesterone formation and metabolism by rabbit placenta in vitro.
abstract: 4-14C-Progesterone and 4-14C-pregnenolone are metabolized in vitro by rabbit placenta, at day 15 and 28 of gestation, exclusively to compounds reduced in ring A (5beta) and at carbon 3 and 20.
mesh_terms: D000818:Animals; D005260:Female; D010920:Placenta / Q000378:metabolism*; D011247:Pregnancy; D011284:Pregnenolone / Q000378:metabolism*; D011374:Progesterone / Q000378:metabolism*; D011817:Rabbits; D013997:Time Factors
chemical_list: D011374:Progesterone; D011284:Pregnenolone