CD8A and head and neck squamous cell carcinoma: Flow cytometric analysis using a mouse and/or human cross-reactive antibody on CD8+ tumor infiltrating lymphocytes (TIL) from B16, MC38 and MEER (a model of human papillomavirus-positive head and neck squamous cell carcinoma (HNSCC)) revealed MCT11 to be highly expressed on the surface of Tex cells (Fig. 1c–f).