title: Progesterone withdrawal: effects on prostaglandins and parturition.
mesh_terms: D000818:Animals; D003489:Cyanoketone / Q000494:pharmacology; D005260:Female; D005865:Gestational Age; D007743:Labor, Obstetric / Q000187:drug effects; D011247:Pregnancy; D011374:Progesterone / Q000096:biosynthesis / Q000097:blood / Q000502:physiology*; D011453:Prostaglandins / Q000378:metabolism*; D012756:Sheep; D013997:Time Factors
chemical_list: D011453:Prostaglandins; D003489:Cyanoketone; D011374:Progesterone