Fig. 3. (A) Animal weight of all groups measured for two weeks (n = 4). (B) Tumor volumes from different groups. (PDT vs. control, **p = 0.0073; PDT vs. Laser, *p = 0.0229; PDT vs. PS, *p = 0.0115). (C) Representative photos of mice from control group, laser group, PS group and PDT group. (D) An image of the excised tumors.