Fig. 10. (a) Ki-67 expression in the tumor of group I (NS) and group V (PBPGs + laser). (b) The relative intensity of Ki67 of group I (NS) and group V (PBPGs + laser). Representative images are provided as indicated; scale bar, 100 μm. Data are mean ± SD from three independent experiments. Unpaired t test; ***p < 0.001.