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The lysis kinetics of Y. pestis KM260(12)ΔlpxM harboring different lysis plasmids. Lysis was monitored by the measurement of the OD600 (A) and the determination of the number of CFU (B). Y. pestis BGs grown to exponential phase were inactivated by induction of the lysis genes. The CFU counts were transformed to log base 10 values. The data are presented as the mean ± s.d. of three samples.
