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HPLC-DAD chromatogram of C. humilis leaf extract. Detection at 350 nm: (1) 3-O-caffeoylquinic acid; (2) 4-O-caffeoylquinic acid; (3) 5-O-caffeoylquinic acid; (4) luteolin-8-C-glucoside; (5) apigenin-8-C-glucoside; (6) tricin-7-O-rutinoside. AU arbitrary units
