title: A qualitative transition in the luteotropic mechanism of early pregnancy.
mesh_terms: D004092:20-alpha-Dihydroprogesterone / Q000378:metabolism; D000818:Animals; D003338:Corpus Luteum / Q000502:physiology*; D004247:DNA / Q000378:metabolism; D005260:Female; D007986:Luteinizing Hormone / Q000378:metabolism; D010477:Perfusion; D011247:Pregnancy; D011270:Pregnancy, Animal; D011374:Progesterone / Q000378:metabolism; D011388:Prolactin / Q000502:physiology; D051381:Rats
chemical_list: D004092:20-alpha-Dihydroprogesterone; D011374:Progesterone; D011388:Prolactin; D007986:Luteinizing Hormone; D004247:DNA