Figure 6.

(A) Western blot analysis of P-gp, MRP1 expression. (B) Quantitative analysis of protein expression of western blot. * P < 0.05, ** P < 0.01 vs the PBS group. (C) IHC staining of tumor taken from MCF-7/DOX^Fluc tumor-bearing nude mice after different treatments (200×). Scale bar = 200 μm. P-gp and MRP1 were quantified; a minimum of three randomly selected sample data were quantitatively analyzed using image J software. Significant differences were assessed using the t test. Results are presented as means ± SD.