Fig. 4: PD1⁺ macrophages are negatively correlated with CD8 T cells in GC tissue.

a, b Flow cytometry analysis of PD1 expression on macrophages and the ratio of CD4⁺ or CD8⁺ T cells in CD45⁺ immune cells from the GC tissue samples. a, b Quantification indicating the associations between PD1⁺ macrophages and CD4⁺ or CD8⁺ T cells in GC tissue