CD8A and hepatocellular carcinoma: The results of the xCell demonstrated that HCC patients in the low-risk score subgroup had modestly increased ratios of CD8 central memory cells, endothelial cells, hematopoietic stem cells, macrophage cells, macrophage M2 cells, and NK cells, while patients in the high-risk score subgroup had significantly elevated ratios of CD4 Th1 and Th2 cells.