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  Indian J Med Microbiol
 

Figure 5: Equipment required to perform the single-breath nitrogen washout test. A plot of exhaled nitrogen concentration (N2 conc) against exhaled volume is shown at the lower right [11].

Figure 5: Equipment required to perform the single-breath nitrogen washout test. A plot of exhaled nitrogen concentration (N2 conc) against exhaled volume is shown at the lower right [11].