title: Amniotic-fluid total cholinesterase and neural-tube defects.
mesh_terms: D000653:Amniotic Fluid / Q000201:enzymology*; D002802:Cholinesterases / Q000032:analysis* / Q000378:metabolism; D004796:Clinical Enzyme Tests; D005260:Female; D005315:Fetal Diseases / Q000175:diagnosis; D006801:Humans; D009436:Neural Tube Defects / Q000175:diagnosis*; D011247:Pregnancy; D011296:Prenatal Diagnosis; D000509:alpha-Fetoproteins / Q000032:analysis
chemical_list: D000509:alpha-Fetoproteins; D002802:Cholinesterases