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. 2020 Mar 3;11:197. doi: 10.3389/fphar.2020.00197

FIGURE 1.

FIGURE 1

High performance liquid chromatography chromatogram of the standard mixture (A) and 3 PD samples (B–D), Peaks 1: aesculin; 2: aesculetin; 3: jateorhizine hydrochloride; 4: palmatine chloride; and 5: berberine hydrochloride.