title: Pathogenesis of emphysema and chronic bronchitis.
mesh_terms: D001980:Bronchi / Q000473:pathology; D001991:Bronchitis / Q000209:etiology* / Q000473:pathology; D002908:Chronic Disease; D006801:Humans; D008168:Lung / Q000473:pathology; D009504:Neutrophils / Q000201:enzymology; D010196:Pancreatic Elastase / Q000378:metabolism; D011656:Pulmonary Emphysema / Q000209:etiology* / Q000473:pathology
chemical_list: D010196:Pancreatic Elastase