title: Acetylcholinesterase in blood-contaminated amniotic fluid.
mesh_terms: D000110:Acetylcholinesterase / Q000378:metabolism*; D000653:Amniotic Fluid / Q000166:cytology / Q000201:enzymology*; D003951:Diagnostic Errors; D005260:Female; D005312:Fetal Blood; D006801:Humans; D009436:Neural Tube Defects / Q000175:diagnosis* / Q000201:enzymology; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D011263:Pregnancy Trimester, Third; D011296:Prenatal Diagnosis
chemical_list: D000110:Acetylcholinesterase