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Jie G, Lin Z, Zhang L, Lv H, He P, Zhao B. Free radical scavenging effect of Pu-erh tea extracts and their protective effect on oxidative damage in human fibroblast cells. J Agric Food Chem. 2006 Oct 18;54(21):8058–64. doi: 10.1021/jf061663o. PMID: 17032009. |