A Structural formulas of PS1 and PS2 and schematic illustration of PS1 NPs as PSs for “all-in-one” PDT. B Time-dependent fluorescence images of U14 tumor-bearing mice after intratumoral injection with PS1 NPs or with PS1 NPs + white light. C Tumors collected from different treatment groups. DTumor volume changes by different treatment methods. (***P < 0.001, PDT vs. other groups). Reproduced with permission .