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. 2021 Jun 11;12:665102. doi: 10.3389/fphar.2021.665102

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Copyright © 2021 Liu, Fan, Du, Mei and Fu.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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HPLC profiles of the main active components of GQD. (A) The mixed standard sample. (B) The four active components. (C) The chemical formula of the four active compounds. 1. puerarin; 2. baicalein; 3. berberine; 4. glabridin.