CD8A and cancer: Sixteen cell subgroups were characterized as B-cells, CD8+T-cells, CD8+CTLs, CD8+Tn, Helper T cells, natural killer T cells, epithelial cells, monocytes, neutrophils, fibroblasts, mast cells, plasma cells, Progenitor cells, Treg cells, endothelial cells, and cancer stem cells (Figure 1B).