Figure 2

Effect of farnesol and antibiotics on biofilm structure and viability. (A) Biofilm without antimicrobial agent; (B) Negative control for live/dead staining, treated with 96% ethanol for 4 h; (C) Biofilm exposed to 300 μM farnesol for 24 h; (D) Biofilm exposed to 40 mg/L of vancomycin for 24 h; (E) Biofilm exposed to 10 mg/L of rifampicin for 24 h.