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. 2022 Aug 24;27(17):5380. doi: 10.3390/molecules27175380

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© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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HPTLC chromatogram of T. officinale leaf extracts. S represents quercetin standard, F1 and F2 represent quercetin from fresh T. officinale leaf extracts, and D1 and D2 represent quercetin from shade-dried T. officinale leaf extracts.