The injected OT-I CD8+ T cells were detectable in the tumor up to 14 days after injection and the proportion of OT-I CD8+ T cells among CD8+ T cells was higher in mice injected with 5x106 OT-I CD8+ T cells compared to mice injected with 1x106 or 2x106 OT-I CD8+ T cells. This evidence concerns the gene CD8A and neoplasm.