Biochemical differences between amniotic fluid and maternal urine.
D000649:Amniocentesis; D000653:Amniotic Fluid / Q000032:analysis*; D005260:Female; D006801:Humans; D011247:Pregnancy; D014556:Urine / Q000032:analysis*; D000509:alpha-Fetoproteins / Q000032:analysis
D000509:alpha-Fetoproteins