Zhou et al. [99] found four major CD8+ T cell subclusters in murine oral carcinoma, including Tcf7+ Pd1− naïve/memory cells, Tcf7+ Pd1+ progenitor cells, Tcf7− Pd1+ effector cells, and Mki67+ proliferative cells. This evidence concerns the gene TCF7 and lip and oral cavity carcinoma.