title: Morphological studies on implantation in marsupials.
mesh_terms: D000818:Animals; D001755:Blastocyst; D002462:Cell Membrane / Q000502:physiology; D010064:Embryo Implantation; D005321:Extraembryonic Membranes / Q000502:physiology; D005260:Female; D005865:Gestational Age; D008394:Marsupialia / Q000502:physiology*; D008431:Maternal-Fetal Exchange; D009092:Mucous Membrane / Q000502:physiology; D009893:Opossums; D010063:Ovum / Q000502:physiology; D011247:Pregnancy; D011270:Pregnancy, Animal; D014327:Trophoblasts