as evidence the authors used assessment of urinary levels of membrane-bound enzymes -- alkaline phosphatase ( ap ) , gamma-glutamyl-transpeptidase , lysosomally bound enzymes n-acetyl-beta-d-glucosaminidase and its isoenzyme b and the low molecular protein , beta-2-microglobulin .
C0014442
enzymes
C0022173
isoenzyme