CXCR6 and glioblastoma: Having identified that CCR2+, CCR5+, CXCR3+, CXCR4+, and CXCR6+ T-cell subsets were enriched in glioblastoma, we subsequently validated the expression of complementary chemokines in dissociated glioblastoma biopsies and patient-derived glioblastoma cell-lines (Figure 6).