title: A perspective on emphysema.
mesh_terms: D004548:Elasticity; D006801:Humans; D008168:Lung / Q000503:physiopathology; D008173:Lung Diseases, Obstructive / Q000145:classification; D008176:Lung Volume Measurements; D011656:Pulmonary Emphysema / Q000145:classification / Q000175:diagnosis* / Q000503:physiopathology; D012123:Pulmonary Ventilation