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Effects of β-carotin and green tea powder on enzymatic activities related to purine metabolism in mouse hepatic tissue. (A) Level of adenosine deaminase (ADA) activity in the hepatic tissue of five groups of mice based on ELISA. (B) Level of xanthine oxidase (XOD) activity in the hepatic tissue of five groups of mice based on ELISA. “ns” represents no statistical significance.
