CD4 and neoplasm: An increase in tumor‐infiltrating NK1.1+ cells (fourfold), CD8+ T cells (threefold), CD45+CD3+CD8+IFN‐γ+ cytotoxic T cells (sixfold), and CD4+ T cells (1.4‐fold) were found in TM@CD326hOMV‐treated tumors compared to the PBS‐treated tumors (Figure 5C,D and Figure S11C,E,F (Supporting Information)).