title: Enzyme histochemical patterns in the normal human amnion: amniotic histochemical patterns.
abstract: The histochemical distribution of 14 enzymes in the human amnion at term are described. Adenosine triphosphatase, 5'-nucleotidase, acid phosphatase and nonspecific esterase show continuous gradations of enzyme activity. Cells with intense activity are prominent in acid phosphatase and nonspecific esterase preparations. A distinct subpopulation of amniotic cells can be defined by their alkaline phosphatase activity. The possible correlations with morphological studies are discussed.
mesh_terms: D000650:Amnion / Q000201:enzymology*; D004950:Esterases / Q000032:analysis*; D006651:Histocytochemistry; D006801:Humans; D006863:Hydrogen-Ion Concentration; D010088:Oxidoreductases / Q000032:analysis*; D010744:Phosphoric Monoester Hydrolases / Q000032:analysis*
chemical_list: D010088:Oxidoreductases; D004950:Esterases; D010744:Phosphoric Monoester Hydrolases