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Relative amount of some differential metabolites. (A) 3-indolepropionic acid. (B) Kynurenic acid. (C) Cholic acid. (D) Cortisol. (E) Hydroquinone. (F) Hippuric acid. (G) 20-carboxy-leukotriene B4. (H) Valsartan. *p < 0.05, **p < 0.01, ***p < 0.0001.
