Moreover, the release of peptide of the Listeria monocytogenes p60 protein, simulating the presence of a tumor antigen via T3SS of Salmonella Typhimurium in a fibrosarcoma murine model, demonstrated that 80% of mice immunized were protected after a fibrosarcoma tumor cell challenge that expressed the p60 peptide; this effect would be associated to the presence of CD8+ T lymphocytes specific against this peptide [106, 107]. The gene discussed is CD8A; the disease is fibrosarcoma.