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Schematic representation of (a) preparation of FA-GO-AuNCs hybrid (GFA) and (b) cancer cell detection by using target-directed GFA. Reproduced with permission from ref. [100]. Copyright (2013) Wiley-VCH Verlag GmbH & Co. Abbreviations: EDC, 1-Ethyl-3-(3-dimethylaminopropyl)carbodiimide; NHS, N-hydroxysulfosuccinimide; AuNCs, Gold nanoclusters; GFA, Folic acid-graphene oxide-AuNCs hybrid.
