Placental structure and transmission of maternal immunity.
D000818:Animals; D002417:Cattle; D005260:Female; D000882:Haplorhini; D007116:Immunization, Passive; D008431:Maternal-Fetal Exchange; D051379:Mice; D010920:Placenta / Q000033:anatomy & histology* / Q000648:ultrastructure; D011247:Pregnancy; D011817:Rabbits; D051381:Rats; D012756:Sheep