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. 2022 May 9;12(5):314. doi: 10.3390/bios12050314

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© 2022 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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(a) Schematic of the catalase/MoS₂–Au/chitosan modified GCE used for detecting H₂O₂ released from cells stimulated with fMLP (left) and Amperometric responses of the CAT/MoS₂–Au/chitosan/GCE for the reduction in H₂O₂ released from about 8.0 × 10⁷ SP₂/0 cells in 4 mL 1× PBS (pH 7.4) solution upon addition of 5 μM fMLP (right) [223]. (b) Illustration of MoS₂-based electrochemical sensors for H₂O₂ (left) and CEA (right) Detection [224].