The CXCL12/CXCR7 system mediates migration and survival of cholangiocarcinoma (CCA) cells through interaction with CXCR4 and β-arrestin-2. (10th February 2016) - Gentilini, A.; Caligiuri, A.; Pastore, M.; Rombouts, K.; Pinzani, M.; Raggi, C.; Invernizzi, P.; Raschioni, C.; Marra, F.