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. 2014 Apr 7;9(4):e94285. doi: 10.1371/journal.pone.0094285

Figure 6. Regulation of adhesion of EDL933 to human epithelial cells by the Pho regulon.

Figure 6

HeLa cells were infected with EDL933 and indicated mutants. After 6-type and ΔphoB strains (A and B). The adhesion decreased in the Δpst mutant (P <0.001) to levels similar to that of the ΔescN mutant which lacks functional TTSS (C and D). The attachment phenotype was restored in the trans complemented Δpst mutant (E). The number of adherent bacteria per HeLa cell was determined from 25 cells (F). Magnification 64 ×.