title: Particle penetration and clearance in the human lung. Results in healthy subjects and subjects with chronic bronchitis.
mesh_terms: D000336:Aerosols; D000368:Aged; D000402:Airway Obstruction / Q000503:physiopathology*; D001991:Bronchitis / Q000503:physiopathology*; D005260:Female; D006801:Humans; D008168:Lung / Q000502:physiology* / Q000503:physiopathology; D008297:Male; D011877:Radionuclide Imaging; D012907:Smoking; D013147:Spirometry; D013667:Technetium
chemical_list: D000336:Aerosols; D013667:Technetium