title: False positive acetylcholinesterase gel test.
mesh_terms: D000110:Acetylcholinesterase / Q000032:analysis*; D000649:Amniocentesis; D000653:Amniotic Fluid / Q000201:enzymology*; D005189:False Positive Reactions; D005260:Female; D006801:Humans; D009436:Neural Tube Defects / Q000175:diagnosis*; D011247:Pregnancy
chemical_list: D000110:Acetylcholinesterase