Figure 3
Expression of COX-2 mRNA and protein in the L 4 -L 6 spinal cord dorsal horn at control, model and TENS group after NS/CFA injection. A) Statistical summary of the COX-2 mRNA expressed in spinal in rats of control group, model group and TENS group. B) Statistical summary of the densitometric analysis of COX-2 protein expressed in spinal in rats of control group, model group and TENS group. C) Representative Western bolts showed the level of COX-2 in rats of control, model and TENS group at 6 h after CFA injection. Values represent mean ± SEM; n = 4-6 for model and TENS group at each time point; n = 4-6 for control group. **P < 0.01 versus control group at the corresponding time point. ▲▲ P < 0.01 versus model group at the corresponding time point.