Fig. 4

A–C: Comparison of the percentages of PD-1⁺ CD8⁺ T cells (A), PD-1⁺ CD8⁺ Tm cells (B) and PD-1⁺CD8⁺T/PD-1⁺CD4⁺T cell ratio (C) between R and NonR advanced gastric cancer patients. D–I: Kaplan Meier curves illustrating the impact of PD-1⁺ CD8⁺ T cells (D, G), PD-1⁺ CD8⁺ Tm cells (E, H) and PD-1⁺CD8⁺T/PD-1⁺CD4⁺T cell ratio (F, I) on PFS and OS, respectively