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. 2023 Jan 11;13(1):125. doi: 10.3390/bios13010125

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© 2023 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 (https://creativecommons.org/licenses/by/4.0/).

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Scheme of multiplexed electrochemical paper-based analytical devices (ePADs) with three individual immunosensors. The label-free DPV peak current decreases after immunoreaction. Redrawn from [118]. ©Elsevier Publishing.