Figure 4
From: Electrochemical monitoring of an important biomarker and target protein: VEGFR2 in cell lysates
A) CVs obtained at (a) bare GCE, (b) chitosan-RGO/GCE, (c) chitosan-RGO/thionine/GCE, (d) Ab1/chitosan-RGO/thionine/GCE, (e) BSA/Ab1/chitosan-RGO/thionine/GCE, (f) Ag/BSA/Ab1/chitosan-RGO/thionine/GCE, (g) Ab2/Ag/BSA/Ab1/chitosan-RGO/thionine/GCE in 0.01 M pH 7.4 PBS. B) Nyquist diagrams of (a) bare GCE, (b) chitosan-RGO/thionine/GCE, (c) Ab1/chitosan-RGO/thionine/GCE, (d) BSA/Ab1/chitosan-RGO/thionine/GCE, (e) Ag/BSA/Ab1/chitosan-RGO/thionine/GCE and (f) Ab2/Ag/BSA/Ab1/chitosan-RGO/thionine/GCE in 10 mM [Fe(CN)6]3−/4− containing 0.1 M KCl. C) CVs of Ab2/Ag/BSA/Ab1/chitosan-RGO/thionine/GCE in 0.01 M pH 7.4 PBS (a) without and (b) with 4 mM H2O2. Ag concentration was 43 pM. The concentration of thionine was 30 μM.
