Figure 11D,E, show the expression levels of KLRB1 and CD163L1 in breast cancer cell lines. Immunohistochemistry (IHC) images of the prognostic feature genes in tumor tissues were downloaded from the Human Protein Atlas (HPA) database. As shown in Figure 11F,G, the staining of KLRB1 and CD163L1 proteins is lighter in tumor tissues. The expression of KLRB1 and CD163L1 mRNA is downregulated in tumor tissues compared to paracancerous tissue (Figure 11H,I). Here, KLRB1 is linked to breast cancer.