PTPRC and neoplasm: Interestingly, we found increased infiltration of neutrophils (CD45+CD11b+Ly6G/C+), natural killer (NK) cells (CD45+CD11b+CD49b+), macrophages (CD45+CD11b+F4/80+), dendritic cells (DCs) (CD45+CD11c+), total T cells (CD45+CD3ε+), and CD8+ T cells (CD45+CD3ε+CD8+) in the tumours treated with immRNA‐RBCEVs in comparison with NC‐RNA‐loaded RBCEVs (Figures 4d and S4A).