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Fig. 4 | BMC Microbiology

Fig. 4

From: Conjugative type IVb pilus recognizes lipopolysaccharide of recipient cells to initiate PAPI-1 pathogenicity island transfer in Pseudomonas aeruginosa

Fig. 4

Effect on PAPI-1 transfer of the addition of OM (a) and LPS (b) preparations derived from strains with (+) or without (−) PAPI-1 island. Pink, PAO1-; orange, PAO1+; black, PA14+; blue, PA14-. Purple data point on (b) are LPS from Salmonella enterica used as negative control. Results were shown as mean ± SD for three independent experiments. Two-way ANOVA followed by Bonferroni post-test was used to analyze the data. All samples were compared to OM (a) or LPS (b) derived from PAO1- cells (ns: no significant difference; *, P < 0.05; **, P < 0.01; ***, P < 0.001)

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