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. 2022 Mar 3;243:123356. doi: 10.1016/j.talanta.2022.123356

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Fig. 4 — Differential pulse voltammetry (DPV) measurements of all modification steps of the immunosensor systems. (A) MNP/EDC:NHS/S1 Protein/S1 Ab; (B) MNP/EDC:NHS/S1 Protein/Cocktail Ab; (C) MNP/EDC:NHS/S2 Protein/S2 Ab; (D) MNP/EDC:NHS/S2 Protein/Cocktail Ab.