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Swimming motility of P. luminescens overexpressing dam gene (Dam) and control (MCS5). (A) Swimming halos were observed on low agar LB medium inoculated by 5 μL of exponentially growing cells. (B) Boxplots of the diameter of the halo size of motility of each strain measured after 30 h of incubation (see Methods section for details). Difference between the two strains is significant (p < 0.001, Wilcoxon test).
