GGA further increases the expression of HSP70 in CCl4-induced rats. (A) Protein samples (50 µg) were loaded for western blot analysis, in order to determine the expression levels of HSP70. Similar results were obtained from three repeated experiments. (B) Quantitative analysis was performed for HSP70 using a densitometer. Data are presented as the mean ± standard deviation. #P<0.05, compared with the control group; *P<0.05, compared with the CCl4 GGA group. GGA, geranylgeranylacetone; CCl4, carbon tetrachloride; HSP70, heat shock protein 70.