Fig. 1. Biofilm evaluation by confocal microscopy.
Representative images of biofilms of 4 strains of S. epidermidis exposed to DMSO (control) or farnesol (0.5 mM) for 24 h: ATCC 55133 (A and B), 1457 (C and D), 1457 agr mutant (E and F), and 1457 luxS mutant (G and H). Scale bars measure 20 µm. Biofilms were stained and examined by the Zeiss confocal microscope. Farnesol exposed biofilms are thinner and more sparse than controls.