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Effect of tolfenamic acid on the expression of NQO1 and HO1 in the cerebral cortex. Tolfenamic acid significantly increased the expression of NQO1 and HO1. All results are expressed as mean ± SEM. n = 6. ## p < 0.01 versus control; ∗ p < 0.05 and ∗∗ p < 0.01 versus model.
