We found CD47 mainly expressed on CD8 + Tex(> 50%) in AML, BRCA, CHOL, CLL, CRC, ESCA, Glioma, HNSC, KICH, LIHC, MCC, MM, NHL, NSCLC, OS, OV, PRAD, SCC, SCLC, SKCM, THCA, UVM (Fig. 6c). The gene discussed is CD47; the disease is Merkel cell skin cancer.