Figure 3.

(a) In vitro cytotoxicity effect of UCNP@BSA-RB&IR825 for PDT, PTT and combined PTT–PDT treatment. PDT (808 nm, 0.5 W/cm²) and PTT (980 nm, 0.4 W/cm²). (b) In vivo tumor growth in different groups of mice after various treatments, as indicated: 1: untreated; 2: laser only (808 nm and 980 nm); 3: injection only; 4: PDT; 5: PTT, 6: PTT + PDT. Wavelengths of 808 nm (0.5 W/cm², 5 min) and 980 nm (0.4 W/cm², 30 min) were used to separately trigger PTT and PDT, respectively. Adapted from Chen et al. [21].