Vitamin B 12 and folic acid in maternal and newborn sera.
D005260:Female; D005492:Folic Acid / Q000097:blood*; D006801:Humans; D007231:Infant, Newborn; D008431:Maternal-Fetal Exchange; D011247:Pregnancy; D014805:Vitamin B 12 / Q000097:blood*
D005492:Folic Acid; D014805:Vitamin B 12