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. 2016 Oct 24;6:35460. doi: 10.1038/srep35460

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Copyright © 2016, The Author(s)

This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

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Chemical structures and mass spectra of quercetin (a), scutellarin (IS) (b), and quercetin-3-O-β-glucuronide (c). The mass spectrometric detection was conducted on a Shimadzu LCMS8050 triple-quadrupole mass spectrometer equipped with an ESI source in product ion scan mode.