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. 2021 Sep 17;12:748772. doi: 10.3389/fphar.2021.748772

FIGURE 1.

FIGURE 1

The TICs of the six analytes in mixed standard (A) and sample (B) by UHPLC-MS/MS in positive and negative ion mode. Alphabets corresponded to the compounds as follows: a, gallic acid; b, ethyl gallate; c, quercitin; d, 7-O-galloyltricetiflavan; e, quercetin; f, myricetin.