Figure 4. The protein level of SRF in kidney, urine and serum in vivo. (A, B) Protein expression level of SRF in kidney as measured by western blot and quantitative analyses. (C) The expression of SRF in serum. (D) The expression of SRF in urine. The trend line was calculated by local polynomial regression fitting. Data are expressed as the mean ± SE (N=7 in each group). *P<0.05 versus the sham group, #P<0.05 versus the control group.