Fig. 3From: The determination of Ochratoxin A based on the electrochemical aptasensor by carbon aerogels and methylene blue assisted signal amplificationDPV responses of different electrode in Tris–HCl buffer after incubated in 0.02 μM MB. (a) The cDNA/apt/AuE, (b) the CAs-cDNA/apt/AuEBack to article page