FIG 2 .

Survival curves and CFU per organ of BALB/c mice infected via oral inoculation or intraperitoneal inoculation. (A) Kaplan-Meier survival curves of mice infected with SL1344 or its AcrB D408A mutant for 17 days. P values were determined by the log rank (Mantel-Cox) test. A P value of <0.05 denotes a significant difference. (B) CFU per organ of bacteria recovered from spleen and liver at 5 days postinfection. The median is plotted. An asterisk denotes a significant difference of P < 0.05 between two groups, compared by the Mann-Whitney U test.