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. 2023 Mar 7;13(3):355. doi: 10.3390/bios13030355

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© 2023 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Standardized biosensor response of the optimized immunoassay against increasing concentrations of (a) HER-1 antigen (0.5–75 ng mL ⁻¹); (b) HER-2 antigen (5–80 ng mL⁻¹) spiked in 100% serum. Embedded graph shows the raw chronoamperometry measurements. (c) Linear regression of the assay spiked in serum samples with data taken from Figure 6a,b. Standard deviations were calculated from experiments performed in triplicate (n = 3).

Standardized biosensor response of the optimized immunoassay against increasing concentrations of (a) HER-1 antigen (0.5–75 ng mL ⁻¹); (b) HER-2 antigen (5–80 ng mL⁻¹) spiked in 100% serum. Embedded graph shows the raw chronoamperometry measurements. (c) Linear regression of the assay spiked in serum samples with data taken from Figure 6a,b. Standard deviations were calculated from experiments performed in triplicate (n = 3).