Fig. 5

5-Iodoindole does not induce E. coli and S. aureus persister cell formation. Exponential-phase cultures of E. coli K-12 BW25113 (a) or S. aureus (MSSA) 6538 (b) were exposed to indole (2 mM), rifampicin (100 μg mL⁻¹), ampicillin (100 μg mL⁻¹), or 5-iodoindole (2 mM) at 37 °C, 250 rpm. Cell viabilities were then determined. The experiment was performed in triplicate