title: Letter: Familial variation of leukocyte lysosomal protease and serum alpha 1-antitrypsin as determinants in chronic obstructive pulmonary disease.
mesh_terms: D001796:Blood Protein Disorders / Q000150:complications / Q000235:genetics*; D002908:Chronic Disease; D006801:Humans; D007962:Leukocytes / Q000201:enzymology*; D008173:Lung Diseases, Obstructive / Q000209:etiology / Q000235:genetics*; D008247:Lysosomes / Q000201:enzymology; D008659:Metabolic Diseases / Q000235:genetics*; D010196:Pancreatic Elastase / Q000097:blood*; D010447:Peptide Hydrolases / Q000097:blood*; D011656:Pulmonary Emphysema / Q000209:etiology; D000515:alpha 1-Antitrypsin / Q000032:analysis*
chemical_list: D000515:alpha 1-Antitrypsin; D010447:Peptide Hydrolases; D010196:Pancreatic Elastase