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. 2009 Oct 16;75(24):7838–7849. doi: 10.1128/AEM.01603-09

FIG. 4.

FIG. 4.

Effect of ppk1 deletion on C. jejuni natural transformation. The donor DNA contained a tetracycline resistance (tetO) marker. The data represent the mean transformation frequency ± SE of three independent experiments with triplicate transformation reactions in each experiment. *, P < 0.01. WT, wild type.