Metabolism of quercetin-7- and quercetin-3-glucuronides by an in vitro hepatic model: the role of human beta-glucuronidase, sulfotransferase, catechol-O-methyltransferase and multi-resistant protein 2 (MRP2) in flavonoid metabolism - OʼLeary, K A; Day, A J; Needs, P W; Mellon, F A; OʼBrien, N M; Williamson, G (Biochem Pharmacol, 2003)