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The biosensing performance of the platform was characterized electrochemically with DPV. The biosensing part, biotinylated anti-HER2 and streptavidin-modified electrodes. (a) BSA % at different concentrations. (b) Linear range of BSA concentration. The DPV experiment was monitored in 2.5 mM [K3Fe(CN)6] and 2.5 mM [K4Fe(CN)6] electrolyte solution.
