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HPLC-DAD chromatograms of the methanol extracts (ME) from leaves (L) and stems (S) of Helicteres vegae (Hv) and Heliopsis sinaloensis (Hs). The identity of the major phenolics (flavonoids F and phenolic acids P) is shown in Table 1. Peaks for the commercial standards are CA (caffeic acid) and R (rutin).
