CD8A and neoplasm: The results of confocal microscopy evidenced much more Ki67+ CD8+ TILs infiltration in the tumor tissues from mice treated with UPs-4T1/EPB nanovaccine plus DMXAA compared with the other groups (the average numbers of Ki67+ cells per 100 CD8+ cells are as follows: 34.6 in the group treated with UPs-4T1/EPB nanovaccine plus DMXAA, 18.2 in UPs-4T1/EPB nanovaccine group, and 9.4 in DMXAA treatment group) (Figure 6G).