Figure 5. Effect of compounds on P-gp function in KBvin cells.
KBvin cells were pre-treated with compounds followed by addition of calcein-AM. The cellular accumulation of calcein is represented by the relative fluorescent unit (×104 RFU). Cellular accumulation of calcein demonstrates inhibition of efflux activity of P-gp. Data with mean ± SD of three independent experiments are shown in suppl. Table S2.