Progesterone and placental development in the sheep.
D000818:Animals; D001826:Body Fluids; D005260:Female; D010920:Placenta / Q000187:drug effects*; D010929:Placentation; D011247:Pregnancy; D011270:Pregnancy, Animal; D011374:Progesterone / Q000494:pharmacology*; D012756:Sheep
D011374:Progesterone