Figure 5. Mean conversion rates of [¹³C]-urea per minute among M. tuberculosis H37Rv and M. bovis-infected rabbits.

Repeated measurements had occurred of each breath test sample. Significant conversion rate differences are noted after both infection and treatment with 25mg/kg of INH. Rates were obtained prior to infection, 4–8 weeks after bronchoscopic infection and within two weeks post-INH treatment.