Fig. 7
Effect of As2O3 (1 µM) on the expression levels of P-gp, MRP1 and LRP protein in HBx-HepG2 cells pretreated with hypoxia (1 % O2). Western blot assay was used to examine the effect of As2O3 on the expression levels of P-gp, MRP1 and LRP protein in HBx-HepG2 cells pretreated with hypoxia (1 % O2), band densities were normalized to β-actin. All data were expressed as mean ± s.e.m., n = 4; significant differences between hypoxia (1 % O2) group and hypoxia (1 % O2) + ATO group were indicated as *P < 0.05, **P < 0.01 (unpaired t-test)