title: Studies of regional lung function in chronic bronchitis with emphysema.
mesh_terms: D000328:Adult; D000368:Aged; D001991:Bronchitis / Q000503:physiopathology*; D002908:Chronic Disease; D005260:Female; D006801:Humans; D008168:Lung / Q000503:physiopathology; D008297:Male; D008722:Methods; D008875:Middle Aged; D011653:Pulmonary Diffusing Capacity; D011656:Pulmonary Emphysema / Q000503:physiopathology*; D012119:Respiration; D012129:Respiratory Function Tests; D014692:Ventilation-Perfusion Ratio; D014978:Xenon
chemical_list: D014978:Xenon