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. 2016 Jan 12;16:11. doi: 10.1186/s12906-016-0991-6

Fig. 1.

Fig. 1

Chromatogram of the chemical reference substances and sample. a Chromatogram of the chemical reference substances. b Chromatogram of various samples: 1, hydroxypuerarin; 2, puerarin; 3, daidzin; 4, genistin; 5, daidzein; 6, genistein; 7, formomonetin; 8, biochanin A