title: A quantitative relation between the experimentally determined number of conceptuses and corpus luteum activity in the pregnant rat.
mesh_terms: D000818:Animals; D003338:Corpus Luteum / Q000502:physiology*; D004622:Embryo, Mammalian; D005260:Female; D005865:Gestational Age; D010920:Placenta / Q000502:physiology*; D010928:Placental Lactogen / Q000378:metabolism; D011247:Pregnancy; D011374:Progesterone / Q000097:blood / Q000378:metabolism*; D051381:Rats
chemical_list: D011374:Progesterone; D010928:Placental Lactogen