CD24 and cancer: For instance, a genetic modification of the replication‐deficient L. monocytogenes strain DdalDdat (Lmdd) secreting human CD24 protein has been developed, which effectively increased the number of CD8+ T cells and T helper 2 cells and promoted IFN‐γ secretion, significantly reducing Hepa1–6‐CD24 tumor size and increasing the mice survival.[106] In addition, L. monocytogenes was able to deliver tetanus toxoid protein to pancreatic tumors to induce cancer cell death in mice.[107]