CD8A and neoplasm: To further confirm that Foxp3UP CD8 T cells were devoid of suppressive properties, we injected mock GFP+ OT-I cells together with mock CD90.1+ OT-I cells or Foxp3UP CD90.1+ OT-I cells (mix 1:1) into B16OVA tumor-bearing mice and analyzed the number of mock GFP+ OT-I cells in the tumor at day 7 of ACT.