Figure 4
Expression of PGE 2 protein in the L 4 -L 6 spinal cord dorsal horn at control, model and TENS group after NS/CFA injection. Statistical summary of the PGE2 protein expressed in spinal dorsal horn in rats of control, model and TENS groups. Values represent mean ± SEM; n = 3-4 for model and TENS group at each time point; n = 3-4 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.