Cells in KIRC were classified into 14 distinct categories, including CD8+ cell, T helper cell, Treg cell, NKT cell, effector CD8+ memory T cell, tumor cell, macrophage, vascular endothelial cell, endothelial cell, neutrophil, mesangial cell, B cell, mast cell and collecting duct principal cell, according to data on previously reported markers (Figure 3A). The gene discussed is CD8A; the disease is neoplasm.