Raw halo measurements (mm) and changes relative to control (%) are reported for experiments run in triplicate. Independent experiments were run and, although different batch of plates gave different absolute values (mm), relative changes were highly reproducible (not shown). Negative numbers indicate higher resistance, positive increased sensitivity. Data marked by # indicates differences with control values showed statistical significance (t-test p ≤ 0.05). The following amounts of drugs were used: RIF 200 μg, CAF 200 μg, SDS 2 mg.