CXCL8 and colorectal carcinoma: For the second dataset TCGA-COAD-512, the mean value (1.419) of CXCL8 in the normal cell (0,0) is significantly smaller than the mean values (6.027, 2.193, 4.553) of CXCL8 in CRC cells (1,1), (1,2), (1,3); the mean value (4.156) of PSMC2 in (0,0) is smaller than the mean values (4.842, 4.911) of PSMC2 in cells (1,2) and (1,3); the mean value (4.969) of SLC20A1 in (0,0) is larger than the mean values in all other cells.