Fig. 2

Serum level of MPO (U/ml) in the experimental groups. Herbal formula treatment decreased serum level of MPO in the osteoarthritic rats at the end of 1 month treatment; C = control; OA = osteoarthritis; F 200 = herbal formula 200 mg/kg; F 400 = herbal formula 400 mg/kg; V = Voltaren. Results were expressed as mean ± SEM and analyzed using one-way ANOVA followed by Bonferroni’s post hoc test a = Significant from control at P < 0.0001, b = Significant from OA at P < 0.0001, c = Significant from F 400 at P < 0.0001, c’ = Significant from F 400 at P < 0.01