Fig. 6From: Visible light-regulated cationic polymer coupled with photodynamic inactivation as an effective tool for pathogen and biofilm eliminationCLSM images for fluorescent detection of E. coli suspensions stained with SYTO/PI after being treated with Ce6-TPP-PEI (A), TPP-PEI (B), free Ce6 (C) and PBS (D). The concentration of Ce6 was 1.746 µg/mL (Scale bar: 30 µm)Back to article page