Figure 13. Effect of leonurine on the expression of the Nrf2 protein from normal young mice (2-month) and natural senile mice (12-month) after leonurine administration for 2 months in cytosolic fraction. Data are presented as mean±SD from each group (n=6, mean±SD). #P < 0.05 and ##P < 0.01 vs control group; *P < 0.05 and **P < 0.01 vs model group.