Figure 12. Antimicrobial susceptibilities of phoB ^KP mutant.

Kirby Bauer disc diffusion assay was performed with different antibiotics and data for representative drugs are shown (A). Measure of disinfectant tolerance by WT and phoB ^KP mutant when cells were exposed to different concentrations benzalkonium chloride (B) and chlorhexidine (C). The percent survival was calculated by comparison of viable cells in control. The datas are the means of measurements made in triplicate performed three times. *, significant difference (P<0.05, Student t test).