title: Radioisotopic studies of lung function.
mesh_terms: D006801:Humans; D007726:Krypton; D008168:Lung / Q000000981:diagnostic imaging* / Q000378:metabolism / Q000502:physiology; D008176:Lung Volume Measurements; D011868:Radioisotopes; D011877:Radionuclide Imaging; D012119:Respiration; D014867:Water / Q000378:metabolism
chemical_list: D011868:Radioisotopes; D014867:Water; D007726:Krypton