title: [Improvement of the gas trap of the diagnostic respiratory control apparatus using radioisotopes].
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D000396:Air Pollutants, Radioactive / Q000032:analysis*; D004780:Environment, Controlled; D011865:Radioisotope Dilution Technique / Q000295:instrumentation*; D012119:Respiration; D014980:Xenon Radioisotopes / Q000032:analysis*
chemical_list: D000393:Air Pollutants; D000396:Air Pollutants, Radioactive; D014980:Xenon Radioisotopes