Dispersal of established biofilms by DspB.

S. aureus strains tested are shown along the x-axis and grouped based on methicillin-sensitivity and isolation source. S. epidermidis (S. epi) strains tested are shown along the x-axis and grouped together. Wells were washed and treated with buffer alone (- DspB) or 40 µg/ml DspB (+ DspB) for 2 hours. Biofilm formation was then quantified by standard microtiter assays and measuring the absorbance at 538 nm, plotted along the y-axis. Bars represent the average absorbance obtained from at least 3 independent plates representing biological replicates; error bars represent the SEM. Asterisks (*) denote a p-value less than 0.05 between the treated and untreated groups.