title: Acetylcholinesterase activity in amniotic fluid of normal and anencephalic fetus in diamniotic twin pregnancy.
mesh_terms: D000028:Abortion, Induced; D000110:Acetylcholinesterase / Q000378:metabolism*; D000650:Amnion / Q000201:enzymology*; D000653:Amniotic Fluid / Q000201:enzymology*; D000757:Anencephaly / Q000196:embryology / Q000201:enzymology*; D004200:Diseases in Twins; D004591:Electrophoresis, Polyacrylamide Gel; D005260:Female; D006801:Humans; D011247:Pregnancy; D011296:Prenatal Diagnosis; D014463:Ultrasonography
chemical_list: D000110:Acetylcholinesterase