ABCB-1/P-gp expression changes caused by 3-BrPA <i>in vivo</i>.

<p>a: The mRNA level of ABCB-1 in MCF-7/ADR tumor tissue treated with different groups was determined by real-time PCR, β-actin served as internal controls for real-time PCR respectively. b, c: The protein expression level of P-gp in MCF-7/ADR tumor tissue treated with different groups was determined by Western blotting analysis, β-actin served as internal controls Western blotting, respectively. *<i>P</i><0.05 compared with the control, **<i>P</i><0.01 compared with the control.