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. 2023 Jan 11;13(1):125. doi: 10.3390/bios13010125

Figure 3.

Figure 3

Scheme of detection mechanism of the label-free electrochemical immunosensors with mediators spiked in the electrolyte (a) or the modification layer (b). (c) The illustration shows the decrease of peak current with the analyte immunoreaction when performing DPV or SWV measurement.