Fig. 2From: The determination of Ochratoxin A based on the electrochemical aptasensor by carbon aerogels and methylene blue assisted signal amplificationThe EIS of 10.00 mM [Fe(CN)6]3−/4− on the different electrodes. (a) The bare AuE, (b) the apt/AuE, (c) the CAs-cDNA/apt/AuE. Inset: the equivalent circuitBack to article page