title: Embryonic signals in pregnancy.
mesh_terms: D000818:Animals; D010064:Embryo Implantation; D010065:Embryo Implantation, Delayed / Q000187:drug effects; D002393:Estrogens, Catechol / Q000502:physiology; D005260:Female; D011247:Pregnancy; D011270:Pregnancy, Animal / Q000502:physiology*; D011453:Prostaglandins / Q000096:biosynthesis; D011817:Rabbits; D051381:Rats; D013552:Swine
chemical_list: D002393:Estrogens, Catechol; D011453:Prostaglandins