EPHX4 and head and neck squamous cell carcinoma: Moreover, we found that the expression of EPHX4 is more closely related to the abundance of Mast, CD56bright, CD56dim, Tem_CD8, Mem_B, Neutrophil, NKT, pDC, NK, Th1, Act_CD_8, Macrophage, Treg, Act_DC in HNSCC (Fig. 5).