Fig. 2From: A novel electrochemical aptasensor for fumonisin B1 determination using DNA and exonuclease-I as signal amplification strategyEIS of 10 mM [Fe(CN)6]3−/4− containing 0.1 M KCl on the AuE (a), the cDNA/AuE (b), and the Apt/cDNA/AuE before (c) and after (d) addition of FB1 and Exo-IBack to article page
