CCL4 and neoplasm: Then, activated Vγ9Vδ2 T cells are able to secrete chemokines, such as chemokine ligands (CCL)3, CCL4, chemokine (C-X-C motif) ligand (CXCL)10, and CXCL13, to recruit dendritic cells/macrophages, NK cells, αβ T cells and B cells to the tumor site (53, 65).