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(a) In vitro evaluation of X-PDT. Cell viability of U87MG cells incubated with different concentrations of RGD-ZSM-RB with or without X-ray irradiation (50 kV, 1 Gy, 10 min). (b) In vivo evaluation of X-PDT. Relative tumor volume obtained from mice under different treatment conditions (X-ray irradiation (1.0 Gy, RGD-ZSM-RB: 20 mg/kg) at different times (1, 2, 4, 6, 8 and 12 h) after injection). Adapted from Sun et al. [106].
