title: Direct radioimmunoassay of angiotensin-converting enzyme in sera from patients with pulmonary diseases.
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D008171:Lung Diseases / Q000201:enzymology*; D008297:Male; D008875:Middle Aged; D007703:Peptidyl-Dipeptidase A / Q000097:blood*; D011863:Radioimmunoassay
chemical_list: D007703:Peptidyl-Dipeptidase A