Figure 5 | Scientific Reports

Figure 5

From: Multifunctional substrate of label-free electrochemical immunosensor for ultrasensitive detection of cytokeratins antigen 21-1

Figure 5

SWV responses of electrochemical immunoassay in 0.1 M PBS and 5 mM H2O2 (pH 7.0), curves a–i correspond to CYFRA21-1 at the concentrations from 100 ng mL−1 to 10 fg mL−1. (B) The calibration plot between the SWV peak current and the logarithm values of CYFRA21-1 concentrations. Error bars represent standard deviation, n = 3.

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