title: Serum glycylproline p-nitroanilidase activity in rheumatoid arthritis.
mesh_terms: D000328:Adult; D000368:Aged; D001172:Arthritis, Rheumatoid / Q000201:enzymology*; D004151:Dipeptides; D004152:Dipeptidyl-Peptidases and Tripeptidyl-Peptidases; D010450:Endopeptidases / Q000097:blood*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged
chemical_list: D004151:Dipeptides; D010450:Endopeptidases; D004152:Dipeptidyl-Peptidases and Tripeptidyl-Peptidases; C020826:glycylproline 4-nitroanilidase