the qualitative assay of the cholinesterases ( che ) in amniotic fluid on polyacrylamide gel gave a single major band ( cholinesterase ) in all samples from normal pregnancies , and two major bands ( cholinesterase and acetylcholinesterase ) in all cases from fetuses with open neural tube defects .
C0008429
cholinesterase
C0001044
acetylcholinesterase