title: Localization of emphysema within the lung. An hypothesis based upon ventilation/perfusion relationships.
mesh_terms: D006801:Humans; D008168:Lung / Q000503:physiopathology*; D010447:Peptide Hydrolases / Q000097:blood; D011656:Pulmonary Emphysema / Q000097:blood / Q000503:physiopathology*; D012907:Smoking; D014692:Ventilation-Perfusion Ratio; D000515:alpha 1-Antitrypsin / Q000097:blood; D019896:alpha 1-Antitrypsin Deficiency
chemical_list: D000515:alpha 1-Antitrypsin; D010447:Peptide Hydrolases