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a) Structure of the ADA-functionalized magnetofluorescent nanoparticles (ADA–MFNPs) and CD-modified antibodies (CD–Abs). b) Schematic depiction of the supramolecular labeling strategy. CD–Abs against the biomarker of interest were initially targeted to cells and then used as scaffolds for coupling ADA–MFNPs in live cells by host–guest complexation between CD and ADA.
