title: Breath sounds and regional ventilation.
mesh_terms: D000328:Adult; D001314:Auscultation / Q000295:instrumentation; D006801:Humans; D008168:Lung / Q000503:physiopathology; D008176:Lung Volume Measurements; D008297:Male; D011187:Posture; D012907:Smoking / Q000503:physiopathology; D014692:Ventilation-Perfusion Ratio; D014980:Xenon Radioisotopes
chemical_list: D014980:Xenon Radioisotopes