CD8A and head and neck squamous cell carcinoma: From the TIMER2.0 website, a number of immunization deconvolution approaches including “XCELL (16)”, “MCPCOUNTER (17)”, “QUANTISEQ (18)”, “CIBERSORT-ABS” and “CIBERSORT (19)” were employed for estimating immunization infiltration of CD8+ T cells in HPV− and HPV+ HNSCC patients.