The mammalian fetal membranes.
D000818:Animals; D001755:Blastocyst / Q000502:physiology / Q000648:ultrastructure; D002415:Cats; D004285:Dogs; D010064:Embryo Implantation; D005321:Extraembryonic Membranes / Q000502:physiology*; D005260:Female; D006168:Guinea Pigs / Q000502:physiology; D006736:Horses / Q000502:physiology; D006801:Humans; D051379:Mice; D010920:Placenta / Q000502:physiology; D011247:Pregnancy; D011817:Rabbits; D013552:Swine / Q000502:physiology; D014599:Uterus / Q000502:physiology