PTPRC and melanoma: To reliably capture all T cell subsets including Treg cells within the TME, we crossed IL-23RtdTomato mice with Foxp3DTR-GFP mice and analyzed TILs (CD45+TCRβ+TCRγδ+ cells) after challenge with B16 melanoma (Fig. 1d–f and Extended Data Fig. 1g).