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. 2020 Aug 11;14:681. doi: 10.3389/fnins.2020.00681

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Copyright © 2020 Fernández, Alfaro and González-López.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Utah Electrode Array implanted in a human brain for 10 minutes (the procedure was approved by the Ethics Committee of the Hospital General Universitario of Alicante, Spain). (A) Image of several electrode tips surrounded by blood cells and plasma proteins that stick to the surface of the neural electrodes. Calibration bar = 400 μm. (B) Scanning electron micrograph showing the surface of several microelectrodes covered by many blood cells. Calibration bar = 100 μm. (C) Detail of the tip of a microelectrode. Calibration bar = 10 μm.