title: Primary division ratio of umbilical arteries and vein of the human placenta in abnormal states of pregnancy and development.
mesh_terms: D000013:Congenital Abnormalities; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D010920:Placenta / Q000098:blood supply*; D010923:Placenta Previa; D006831:Polyhydramnios; D011247:Pregnancy; D011272:Pregnancy, Multiple; D014469:Umbilical Arteries / Q000002:abnormalities*; D014471:Umbilical Veins / Q000002:abnormalities*