Figure 4.

The role of streptococcal pullulanase in the adherence of streptococci to human epithelial SCC1A, SCC8, SCC12A, SCC24A and SCC60A cell lines. The normalized mean fluorescence intensities (NMFI) of cells after incubation with A8173, A8173pulA, NZ131rgg and NZ131rgg-pulA bacteria are shown as columns with standard errors. Statistically significant differences between PulA deficient and parental strains are indicated with asterisks (* p < 0.05).