For example, some specific chemokines such as CCL2, CCL3, CCL4, CCL5, CXCL9 and CXCL10 are upregulated at the tumor sites with high T cell infiltration.[48d] Modifying immune cells with the aforementioned chemokine‐specific receptors can facilitate infiltration in tumor tissues. This evidence concerns the gene CXCL9 and neoplasm.