title: Letter: Screening for neural-tube defects by a haemagglutination test for serum-alpha-fetoprotein.
mesh_terms: D000757:Anencephaly / Q000097:blood / Q000175:diagnosis*; D005260:Female; D005326:Fetal Proteins / Q000032:analysis*; D005865:Gestational Age; D006386:Hemagglutination Tests; D006801:Humans; D011247:Pregnancy; D011296:Prenatal Diagnosis; D016135:Spinal Dysraphism / Q000097:blood / Q000175:diagnosis*; D000509:alpha-Fetoproteins / Q000032:analysis*
chemical_list: D005326:Fetal Proteins; D000509:alpha-Fetoproteins