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Murine bacteremia model. (A) Balb/c mice were immunized with the KOMPs individually or PBS. Seven days after the second booster vaccination, different doses of K pneumoniae 260 in 100 μl of PBS were injected intravenously into mice. (B) The survival rate of murine bacteremia model was observed every 12 h for 14 days. *p < 0.05, ***p < 0.001. ns, p > 0.05.
