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This work designed a simple, sensitive, and low‐cost immunosensor for the detection of protein marker by using a carbon sphere/gold nanoparticle (CNS/AuNP) composite as an electrochemical label. The nanoscale carbon spheres, prepared with a hydrothermal method by using glucose as raw material, were used to load AuNPs for labeling antibody by electrostatic interaction, which provided a feasible pathway...
A sensitive immunoassay method has been developed by combining a disposable electrochemical immunosensor with a carbon sphere/gold nanoparticle composite as an electrochemical label, which exhibits a wide linear range, low detection limit, good specificity, and acceptable accuracy for the detection of antigen. For more details see the Full Paper by H. Ju, J. Lei et al. on page 4994 ff.
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