Fig. 9From: Visible light-regulated cationic polymer coupled with photodynamic inactivation as an effective tool for pathogen and biofilm eliminationCLSM images of the E. coli biofilm eradication effect after treatment with Ce6-TPP-PEI (A), TPP-PEI (B), free Ce6 (C), and PBS (D) upon irradiating (5 min at 30 mW/cm2) or not. The biofilms were double-stained with SYTO 9 and PI. The concentration of Ce6 was 3.063 µg/mL (Scale bar: 200 μm)Back to article page