title: Where does emphysema begin?
mesh_terms: D004108:Dilatation, Pathologic; D006801:Humans; D007249:Inflammation / Q000503:physiopathology; D010447:Peptide Hydrolases / Q000502:physiology; D011650:Pulmonary Alveoli / Q000201:enzymology / Q000503:physiopathology*; D011656:Pulmonary Emphysema / Q000503:physiopathology*
chemical_list: D010447:Peptide Hydrolases