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. 2017 Mar 27;17:71. doi: 10.1186/s12866-017-0984-8

Fig. 4.

Fig. 4

Early biofilm formation by human fecal subclone H30 and subclone H22 strains of ST131 Escherichia coli. BioFilm Control® image analysis software was used and results are expressed as the proportion of immobilized beads relative to reference conditions (% RBI) according to incubation time. Bars represent the standard deviation obtained from three independent experiments performed in duplicate. The biofilm is more fully formed (beads are immobilized) as RBI approaches a value of 1. Significant differences between H22 and H30 using Dunnett’s test are indicated by * (p < 0.05), ** (p < 0.01) and *** (p < 0.001)