Bacterial viability after exposure to SDS. Bacterial strains grown to mid-log phase were diluted to an OD 600 nm of 0.05 in 7H9 medium containing 0.05% SDS and incubated at 37C for 0 h (black bars), 1 h (gray bars) and 4 h (white bars). Data points show means +/- standard deviations of duplicates. *Significantly different from values at T0 (p < 0.05). All data are representative of two independent experiments.