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Figure 1: Level of tumor necrosis factorα in experimental rats. Each value represents the mean ± standard deviation of six rats. Comparisons were made as follows: agroup I versus Groups II, III, IV, V; bGroup II versus Group III, IV, V. cGroup III versus Groups IV, V; dGroups IV versus group V. The symbol represents statistical significance at *(P < 0.05). Statistical analysis was calculated by oneway analysis of variance followed by the Student–Newman–Keul's test 
