CXCL8 and colorectal carcinoma: For the eighth dataset TCGA-READ, the mean value (1.795) of CXCL8 in the normal cell (0,0) is significantly smaller than the mean values of CXCL8 in all CRC cells; the mean value (4.303) of PSMC2 in (0,0) is smaller than the mean values of PSMC2 in all CRC cells; the mean value (3.903) of SLC20A1 in (0,0) is larger than the mean value in all CRC cells.