Biofilm formation in complementation strains PicaADBC, icaCpRS and PsigB in 96-well microtiter plates.

<p>(A) SE1457, WW06, Δ<i>icaC</i> and icaCpRS were cultivated in TSB; PicaADBC and PsigB were cultivated in TSB with or without 0.5% (g/ml) xylose. Biofilms formed over 24 h in 96-well microtiter plates were stained with 2% crystal violet. (B) The crystal violet was dissolved in ethanol and the absorbance was determined at 570 nm. The mean value ± standard deviation for each strain is shown.