CXCL8 and neoplasm: Tumors deploy multiple mechanisms in order to ensure the improper recruitment and accumulation of T cells at the tumor site by induction of ligands such as Fas-ligand [18] as well as the production of vascular endothelial growth factor (VEGF) [19] and immunosuppressive cytokines such as interleukin (IL)-6 and IL-8 [10].