We identified 18 different cell clusters, including cancer cells, renal tubule cells 1, renal tubule cells 2, renal tubule cells 3, CD8+ T cells, CD4+ T cells, regulatory T cells (Treg cells), natural killer cells (NK cells), macrophages/dendritic cells (MACDC) 1, MACDC 2, B cells, neutrophils, fibroblasts (FIB), endothelial cells (EC) 1, EC 2, EC 3, collecting duct cells 1, and collecting duct cells 2 (Figure 7(a)). Here, CD4 is linked to cancer.