title: [Change of serum ACE activity in patients with pneumonia].
mesh_terms: D000328:Adult; D000368:Aged; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D007703:Peptidyl-Dipeptidase A / Q000097:blood*; D011014:Pneumonia / Q000201:enzymology*
chemical_list: D007703:Peptidyl-Dipeptidase A