CD4 and neoplasm: The fractions of infiltrating immunocytes were significantly different between these two groups; memory B cells, naive CD4+ T cells, M0 macrophages, and activated mast cells were higher in the low-immunity group, whereas CD8+ T cells, activated memory CD4+ T cells, M1 and M2 macrophages, resting dendritic cells, and resting mast cells were increased in the high-immunity group, which suggests that more immune filtrations exist in the high-immunity group or in samples with low tumor purity (Figure 5C).