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. 2023 Apr 5;13(4):461. doi: 10.3390/bios13040461

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© 2023 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/).

PMC Copyright notice

(A) Illustration of the cholesterol-detecting SERS biosensor based on AgNPs@MIL-101(Fe). (B) Schematic representation of the enzyme-free tandem reaction method for SERS glucose measurement. Reprinted with permission from refs. [87,88].