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. 2020 Jun 19;20(12):3487. doi: 10.3390/s20123487

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© 2020 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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Proposed system showing several implantable micro-light sources to activate the photosensitizer deep inside a tumor powered by ultrasonic wave [207]. Copyright © 2015, IEEE.