CXCL9 and neoplasm: Irradiation treatment can also upregulate the expression of CD70 on DCs, enhance the activation of T cells, induce the expression of chemokines CXCL-9, CXCL-10, CXCL-11 as well as CXCL-16, and attract antigen-specific T cells to infiltrate irradiated tumor regions [11, 12].