In the tumor-draining lymph nodes, we found an increase in the number of CD8 + cytotoxic T cells after sensory neurons’ overstimulation (from 13.68 × 107 ± 3.50 × 107 to 22.41 × 107 ± 2.17 × 107 cells per mg of tumor) (Fig. 7C); while we did not detect any differences in the numbers of T cells in the tumor non-draining lymph nodes (Fig. 7D). This evidence concerns the gene CD8A and neoplasm.