title: A multi-anode proportional counter for measuring [11C]carbon dioxide in exhaled air.
mesh_terms: D002245:Carbon Dioxide / Q000032:analysis*; D002250:Carbon Radioisotopes; D006801:Humans; D008991:Monitoring, Physiologic / Q000295:instrumentation; D011874:Radiometry / Q000295:instrumentation*; D012119:Respiration
chemical_list: D002250:Carbon Radioisotopes; D002245:Carbon Dioxide