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Effect of the transducer surface on the analytical signal for the detection of anti-tTG IgA autoantibodies using tTG-modified SPCE (grey line) and tTG-modified SPCE–MWCNT– AuNPs (black line). Experimental conditions: tTG 0.1 g L−1; BSA 2%; control samples diluted 1:2; anti-H-IgA-AP 1:30,000; 3-IP, 1.0 mM; Ag+, 0.4 mM. Cyclic voltammetric scans from −0.002 V to +0.4 V at a scan rate of 50 mV s−1. Reproduced from ref. [138] with the permission from Elsevier.
