TABLE 2 The IC50 values for inhibition of transport function of ABCG2 by curcumin, Ko143, GO-Y030, GO-Y078, GO-Y168, and GO-Y172
The values are the mean ± S.D. of three independent experiments. The IC50 values (50% inhibitory concentration) were determined using concentrations of 0.05, 0.1, 0.25, 0.5, 1, 5, 10, and 20 µM of indicated compound, as described in Materials and Methods.