“In the presence of 100 microM verapamil , the permeated amounts of BPA, tOP and tBP within 180 min in the B-to-A direction decreased by 12-, 2.6- and 3.1-fold, respectively.”
“The ratios of apparent permeability coefficient of B-to-A against A-to-B, P(app) ratios, for BPA, tOP and tBP were markedly decreased in the presence of 100 microM verapamil.”