Fig 3. Scanning electron micrographs of biofilm-laden discs exposed to 200 μA direct current (DC) or no exposure for 24 hours.

S. aureus control (A) or 200 μA DC (B); S. epidermidis control (C) or 200 μA DC D); P. aeruginosa control (E) or 200 μA DC (F). All images were taken at 10K magnification and a minimum of three fields were observed. A representative field for each bacterial biofilm sample is shown.