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Anti-initiating activity through the modulation of carcinogen metabolism. Effect of treatment with 10 µg/mL of each sample for 48 h on glutathione-S-transferase activity (bars) and non-enzymatic antioxidant activity GSH (circles) (A), quinone reductase (QR) (B) and epoxide hydrolase mEH (C) activities in Hepa1c1c7 cells. Data expressed as mean ± SD (n = 4).
