CD4 and glioblastoma: GBM contained CD4+T-bet+ cells (median 0.3 cells/mm2, representing 4.2% of total CD4, Figure 1B,F,G) and CD8+Tbet+ cells (median 0.9 cells/mm2, representing 3.9% of total CD8 cells, Figure 1B,F,G), as well as RORγt+ cells (median of 1.9 cells/mm2, Figure 1B,H).