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. 2017 Dec 4;17(12):2805. doi: 10.3390/s17122805

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© 2017 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 (http://creativecommons.org/licenses/by/4.0/).

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(A) ECL curves of simultaneous scan of DMSA-CdTe QDs and TiO₂-GSH-CdTe QD composites; individual scan of (a) DMSA-CdTe QDs, (b) TiO₂-GSH-CdTe QD composites, and (c) modified ITO electrodes. Inset: Continuous cyclic simultaneous scans of DMSA-CdTe QDs and TiO₂-GSH-CdTe QD composites modified ITO electrodes. (B) Linear calibration plots for detection of AFP-L3 (left) and AFP (right). (C) Sandwich immuno-structure of HRP-labeled antibody–antigen biotinylated antibody on the immunosensor and detection procedures of analytes (green arrow: luminescence; gray arrow: quenching). Reproduced from [66] with permission from the American Chemical Society.