PATZ1 and neoplasm: To test this possibility, we used an Ag-specific in vivo model where mice were sc injected with fluorescent B16ZsG+gp33+ and non-fluorescent B16OVA+ tumor cells, expressing chicken ovalbumin (OVA), on separate flanks followed by adoptive transfer of P14 and OT-I CTLs and further analysis of ZsG fluorescence in TILs (Figure 5D).