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. 2022 Aug 19;44(3):561–572. doi: 10.1038/s41401-022-00968-6

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© The Author(s), under exclusive licence to Shanghai Institute of Materia Medica, Chinese Academy of Sciences and Chinese Pharmacological Society 2022, Springer Nature or its licensor holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

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Fig. 2 — a A photograph of medicinal herbs of ZN. b Chemical formula of NC. c The main active components of ZNE, including NC, magnoflorine, and hesperidin, were detected by liquid chromatography. d–g Raman shift of ZN, NC, magnoflorine, and hesperidin mixed with silver nanoparticles was obtained from the reduction of sodium borohydride and determined by surface-enhanced Raman spectroscopy.