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Modes of sensor response and different DNA shell modified NPs. (a) Scheme illustration of different binding events between ssDNA-AuNPs and GO arising from protein corona of nanomaterials. (b) DNA sequences of the AuNPs used in this study. Due to the differential binding affinities of DNA bases to GO (G > A > C > T), it is reasonable to design a set of DNA sequences as sensor receptors. (c) Overall flow diagram of analysis trial.
