On-line  O2  and  CO2  analysis in vivo.
D001698:Biomedical Engineering; D002245:Carbon Dioxide / Q000032:analysis*; D006801:Humans; D013058:Mass Spectrometry / Q000295:instrumentation; D010100:Oxygen / Q000032:analysis*; D010313:Partial Pressure; D012129:Respiratory Function Tests / Q000295:instrumentation*; D013057:Spectrum Analysis / Q000295:instrumentation*
D002245:Carbon Dioxide; D010100:Oxygen