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HPLC chromatograms of 11 compounds in EECP and EEPG. 1: caffeic acid; 2: p-coumaric acid; 3: ferulic acid; 4: resveratrol; 5: quercetin; 6: apigenin; 7: kaempferol; 8: chrysin; 9: pinocembrin; 10: galangin; 11: caffeic acid phenylethyl ester. SD: standards.
