Placental clearance and fetal oxygenation.
D000531:Altitude; D000818:Animals; D000983:Antipyrine; D001805:Blood Transfusion, Intrauterine; D005260:Female; D005333:Fetus / Q000378:metabolism*; D000882:Haplorhini; D008431:Maternal-Fetal Exchange; D010100:Oxygen / Q000008:administration & dosage / Q000097:blood; D010101:Oxygen Consumption; D010920:Placenta / Q000502:physiology*; D011247:Pregnancy; D012756:Sheep; D014316:Tritium; D014469:Umbilical Arteries; D014471:Umbilical Veins; D014508:Urea; D014599:Uterus / Q000098:blood supply; D014867:Water
D014867:Water; D014316:Tritium; D014508:Urea; D010100:Oxygen; D000983:Antipyrine