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. 2023 Mar 13;13(3):376. doi: 10.3390/bios13030376

Figure 2.

Figure 2

(A) Schematic illustration of the distance-dependent MEF sensing platform based on a molecular beacon [46]. (B) Schematic illustration of the preparation of MEF-based AuNPs@polyAn-aptamer@FAM-DNA nanostructure and target detection [48]. (C) Schematic illustration of target DNA fluorescence detection based on the CHA and plasma resonance fluorescence (PEF) effect [52]. (D) Schematic diagram of the MEF effect dependent on the DNA length of dsDNA between 20-AuNPs and FITC [53]. Reprinted with permission from [46,48,52,53].