“…Phenolic compounds are also contribute to their inducing apoptosis by arresting cell cycle, regulating carcinogen metabolism and ontogenesis expression, inhibiting DNA binding and cell adhesion, migration, proliferation or differentiation, and blocking signalling pathways [28][29][30][31][32][33] . The hydrolysable tannin which is commonly found in the polar extract was previously reported to enhance the activity of the other phytochemicals by inhibition of the efflux mechanism, and decrease expression of P-glycoprotein, MRP1 and MRP2 membrane efflux transporter proteins in human cholangiocarcinoma [34] .…”