Fig. 8

Comparison of CD8+ T cells and its subsets in patients with HNSCC in T1 + T2 and T3 + T4 groups. CD8+ T cells gated on the lymphocyte population and then the frequencies of T cell subpopulations were determined within CD8+ T cell gate. Horizontal bar is representative of the Mean ± SEM, *P value < 0.05. **P value < 0.01. ***P value < 0.001