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The individual polyphenols detected in propolis samples P1-P8 (A) and the main 4 phenolic compounds identified (B). (Data are expressed as mean ± SEM). (EC epicathechin, CU-p-coumaric acid, RU-rutin, RO-rosmarinic acid, RES-resveratrol, QU-quercetin, KE-kaempferol).
