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. 2023 Aug 9;13(16):2566. doi: 10.3390/ani13162566

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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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Fully assembled 3D-printed horse head. (a) LED eyes lit. (b) LED eyes dark after correctly aimed laser training pistol activation of laser sensors embedded in the anatomic locations of the medulla oblongata or pons.