title: Serum angiotensin-converting enzyme level in silicosis.
mesh_terms: D000367:Age Factors; D005260:Female; D006801:Humans; D008297:Male; D007703:Peptidyl-Dipeptidase A / Q000097:blood*; D012829:Silicosis / Q000201:enzymology*
chemical_list: D007703:Peptidyl-Dipeptidase A