At 1 week post‐intracranial tumor implantation, there was a significant increase in absolute numbers of CD3+, CD4+, and CD8+ lymphocytes within the brain tumor of mice from the GIFT‐7TVax group when compared to VC (VC vs GIFT‐7TVax: CD3+: 7.8% Vs 32.3% p < 0.0001; CD4+: 2.8% Vs 9.1% p < 0.0001; CD8+:2.1% Vs 8.1% p < 0.001) (Figure 2a). The gene discussed is CD4; the disease is brain neoplasm.