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(a) Schematic diagram of PLGA-ICG nanoparticles with R848 for photothermal immunotherapy against RM9-tumor models; (b) thermal images of mice after the subcutaneous injection, followed by laser irradiation; (c) flow cytometry displaying the population of natural killer cells after PTT; (d) increased population of natural killer cells after treatment (* p < 0.05, n = 3). Figures are reproduced from ref. [62] with permission from Dove Press.
