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. 2023 Sep 7;9(9):e19929. doi: 10.1016/j.heliyon.2023.e19929

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© 2023 The Authors

This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

PMC Copyright notice

Fig. 9 — Fe₂O₃/GO/GCE based electrochemical sensor for the detection of dopamine and uric acid. Reproduced with permission from Ref. [58], with the permission of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/). Copyright 2019, MDPI.