C1GALT1C1 and colorectal carcinoma: Based on these, we isolated SP cells from hUCMSCs and hPMSCs, as well as Tn+ (LS174T-Tn+ and HT-29-Tn+ cells with mutant Cosmc that have been identified in previous studies [25, 26]) and matching Tn− cells (LS174T-Tn− and HT-29-Tn− cells with normal Cosmc) from colorectal cancer (CRC) cell lines (LS174T and HT-29) and established co-cultured system of SP-MSCs with CRC cells.