title: Letter: Elevated amniotic-fluid alpha-fetoprotein and duodenal atresia.
mesh_terms: D000328:Adult; D000653:Amniotic Fluid / Q000378:metabolism*; D004314:Down Syndrome / Q000175:diagnosis; D004386:Duodenum / Q000002:abnormalities*; D005260:Female; D005326:Fetal Proteins / Q000378:metabolism*; D006801:Humans; D007409:Intestinal Atresia / Q000378:metabolism*; D011247:Pregnancy; D000509:alpha-Fetoproteins / Q000378:metabolism*
chemical_list: D005326:Fetal Proteins; D000509:alpha-Fetoproteins