TNF and neoplasm: Furthermore, IFN‐γ and TNF‐α are important cytokines for cytotoxic T‐lymphocytes to perform their effector functions and can effectively kill tumor cells.[30, 43, 44] These were also obviously increased in tumor tissues (Figure 4L; Figure S15, Supporting Information) and serum (Figure 4M,N), which further confirmed the stronger antitumor immune response induced by DSPE‐OVA‐Gel.