Figure 4.

Prognostic role of tumor‐infiltrating CD8⁺ T cells in the outcome of patients with oral squamous cell carcinoma after definitive surgery by density of CD8⁺ T cells. A, Kaplan‐Meier curves for disease‐specific survival (DSS) by location of CD8⁺ T cell density. B, Kaplan‐Meier curves for overall survival (OS) by location of CD8⁺ T‐cell density. (C) Kaplan‐Meier curves for recurrence‐free survival (RFS) by location of CD8⁺ T‐cell density. The red line indicates high CD8⁺ T‐cell density and blue line indicates low CD8⁺ T‐cell density