Fig. 7.

(A) S. aureus or E. coli (10⁸ cells per mL) were incubated for 10 min with BF1–BF3 at 100 μM concentration in PBS followed by illumination with 400–700 nm light at an irradiance of 200 mW cm⁻². Aliquots were removed from the suspensions after the various fluences of light had been delivered and CFU determined. Values are means of six independent experiments and bars are SEM. * p < 0.05 ** p < 0.01; 2-tailed unpaired t-test. (B) S. aureus was incubated with 1 μM concentration of BF4–BF6 and E. coli (both 10⁸ cells per mL) was incubated with BF4–BF6 at 10 μM concentrations for 10 min followed by a wash and illumination with white light. Values are means of six independent experiments and bars are SEM. * p < 0.05, ** p < 0.01, *** p < 0.001; 2-tailed unpaired t-test.