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. 2022 Jan 11;12:714434. doi: 10.3389/fphar.2021.714434

FIGURE 4.

FIGURE 4

Authentication of Actaea racemosa: (A) PCA score plots of three genera (Actaea, Echinacea, and Panax), (B) PCA score plot of four species of Actaea (A. dahurica, A. pachypoda, A. podocarpa, and A. racemosa), (C) PCA score plot of vouchered A. racemosa rhizomes from three sources (American Herbal Pharmacopoeia, North Carolina Arboretum Germplasm Repository, and Strategic Sourcing, Inc.) and NIST SRM 3295 (rhizome), 3296 (leaves), and 3298 (extracted dosing form), and (D) Double SIMCA Q residuals plot for the same samples shown in plot C.