title: Screening for neural-tube defects.
mesh_terms: D005189:False Positive Reactions; D005260:Female; D006801:Humans; D009436:Neural Tube Defects / Q000175:diagnosis*; D011247:Pregnancy; D011296:Prenatal Diagnosis; D011786:Quality Control; D012015:Reference Standards; D006113:United Kingdom; D000509:alpha-Fetoproteins / Q000032:analysis* / Q000592:standards
chemical_list: D000509:alpha-Fetoproteins