title: At increased risk: neural tube defect relatives.
mesh_terms: D005260:Female; D006801:Humans; D009436:Neural Tube Defects / Q000175:diagnosis / Q000235:genetics*; D011247:Pregnancy; D011296:Prenatal Diagnosis; D012306:Risk; D000509:alpha-Fetoproteins / Q000032:analysis
chemical_list: D000509:alpha-Fetoproteins