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The electrochemical characterization of the graphene-CRISRP biosensor. (a) Cyclic voltammograms and (b) Nyquist plots of EIS for I) the bare gold electrode, II) the graphene modified gold electrode, III) the graphene-CRISPR biosensor, IV) the graphene-CRISPR biosensor + 2 nM Delta DNA, the electrolyte solution of 0.05 M [Fe(CN)6]3−/4− and 0.5 M KCl. Scan rate: 100 mV/s.
