Therefore, to evaluate a possible cross-reactivity to ABCB1 for mAb BXP-21, MDA-MB-231 and MCF7 cells with very high ABCB1 expression, due to a docetaxel-induced up-regulation, and their parental counterparts were subjected to WB and ICC. Here, ABCB1 is linked to intrahepatic cholangiocarcinoma.