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The prsA2 mutant does not show an increased sensitivity to lysis during intracellular growth. Intracellular bacterial lysis was measured using the luciferase reporter plasmid pBHE573 in infected macrophage cells. The error bars represent the standard deviations from three independent experiments. The L. monocytogenes strains tested include the wild type (strain DP-L5749), ΔprsA2 mutant (DP-L5751), and a 10403S strain expressing holin/lysin (DP-L5750).
