Studies of the transplacental calcium gradient in the sheep.
D000818:Animals; D002118:Calcium / Q000097:blood*; D005260:Female; D005312:Fetal Blood / Q000032:analysis*; D007016:Hypophysectomy; D008431:Maternal-Fetal Exchange; D009392:Nephrectomy; D010920:Placenta / Q000378:metabolism; D011247:Pregnancy; D012756:Sheep / Q000097:blood* / Q000196:embryology
D002118:Calcium