Cell membrane coated nanoparticles that integrate the biophysiological advantages of cell membranes with the multifunctionalities of synthetic materials hold great promise in cancer immunotherapy.[112] To enable more precise delivery of tumor vaccine to the lymph nodes to activate DCs, a novel cancer vaccine was developed by using Fe3O4 magnetic nanoclusters as the core and cancer cell membranes embedded with anti‐CD205 as the covering layer.[113] This design enabled us to magnetically retain them in the lymph nodes under the guidance of magnetic resonance imaging (MRI). This evidence concerns the gene LY75 and cancer.