title: Morphological aspects of placental ontogeny and phylogeny.
mesh_terms: D000818:Animals; D002455:Cell Division; D002465:Cell Movement; D005321:Extraembryonic Membranes / Q000166:cytology; D005260:Female; D008394:Marsupialia; D010802:Phylogeny; D010920:Placenta / Q000166:cytology*; D011247:Pregnancy; D011270:Pregnancy, Animal; D011323:Primates; D012377:Rodentia; D014327:Trophoblasts / Q000166:cytology