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. 2022 Jul 21;12(7):545. doi: 10.3390/bios12070545

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© 2022 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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Square wave voltammograms for each step of the immunosensor assembly procedure: (a) bare GCE; (b) GCE/COOH-PPy; (c) GCE/COOH-PPy/NH₂–NCY; (d) GCE/COOH-PPy/NH₂–NCY/GA; (e) GCE/COOH-PPy/NH₂–NCY/GA/anti-cTnT; (f) GCE/COOH-PPy/NH₂–NCY/GA/anti-cTnT/Gly; and (g) the addition of 50 pg mL⁻¹ cTnT (antigen) on the immunosensor surface. SWV measurements performed in 5 mmol L⁻¹ [Fe(CN)₆]^3−/4− solution prepared in 0.1 mol L⁻¹ KCl.