Figure 2: Determination of intracellular ROS generation in SW480 cells andSW620 cells after PDT treatment.

(A) SW480 cells; (B) SW620 cells. The concentration of DVDMS was 2 μg/mL. Data shown are representative of three independent experiments. Results are presented as means ± SD of three independent experiments, SD is denoted by the error bars. *P < 0.05 represents PDT versus control.