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Plasma concentrations of (+)-catechin, (−)-epicatecin, and quercetin in rats. Rats (N = 4 for each group) were injected i.p. with 400 mg/kg each dietary polyphenolic compound. Blood samples were collected from their tail veins at 0.5, 1, and 2 h after administration of the dietary compound. Each value is the mean ± S.D.
