title: Regional clearance of ions from the airways of the lung.
mesh_terms: D000328:Adult; D003201:Computers; D006112:Gravitation; D006801:Humans; D008168:Lung / Q000098:blood supply / Q000378:metabolism*; D008297:Male; D011187:Posture; D011652:Pulmonary Circulation; D012492:Salts; D012588:Scintillation Counting; D013667:Technetium / Q000378:metabolism*; D013997:Time Factors
chemical_list: D012492:Salts; D013667:Technetium