Figure 2.

Effect of OHS extract on acetic acid-induced writhing response in mice. The writhes were induced by the intra-peritoneal injection of 0.7% acetic acid (0.1 ml/10 g) in saline solution. The numbers of muscular contractions were counted over a period of 20 min after acetic acid injection. Control, vehicle (water)-treated group; OHS100, treated with OHS extract of 100 mg/kg body weight; OHS200, treated with OHS extract of 200 mg/kg body weight. Aspirin 100 mg/kg was used as positive control. Data are representative of three independent experiments (mean and SEM). One-way ANOVA. ***p<0.001; ****p<0.0001