title: Regional pulmonary function in historical perspective.
mesh_terms: D002000:Bronchospirometry; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D008168:Lung / Q000502:physiology; D008171:Lung Diseases / Q000175:diagnosis; D009584:Nitrogen; D010827:Physiology / Q000266:history*; D011652:Pulmonary Circulation; D011877:Radionuclide Imaging; D012129:Respiratory Function Tests; D013147:Spirometry; D014692:Ventilation-Perfusion Ratio; D014978:Xenon
chemical_list: D014978:Xenon; D009584:Nitrogen