Treatment of P. aeruginosa biofilm with direct current.

Direct current was applied to biofilm in wells containing (A) no antibiotic and (B) 10 µg/mL tobramycin sulfate for 20 hours. All wells contained 0.1 g/L TSB with varying amounts of total NaCl. References to theoretical salt limitation or excess salt apply only to wells with current. Each symbol indicates a mean LD on coupons across one well and lines show connected means for each current level.