Mean (±SEM) Mab lung burden (log10 CFU) in A) C3HeB/FeJ and B) BALB/c mice, n=5 per time-point, per treatment group, treated with 25 or 50 mg/kg clofazimine are shown in red and light blue, respectively. Mean (±SEM) Mab lung burden in the negative control group, administered with phosphate buffered saline (PBS), is shown in grey. Time-point week −1 represents the day following infection with Mab. Time-point week 0 represents the day antibiotic administration was initiated. CFZ-25, once daily 25 mg/kg clofazimine; CFZ-50, once daily 50 mg/kg clofazimine. P-values of PBS vs. each treatment group are represented as stars: * represents p ≤0.05; ‘ns’ represents p>0.05 (not significant).