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. 2020 May 6;10(5):806. doi: 10.3390/ani10050806

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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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Three different variations of P. biserialis [5,31,32]. Images demonstrate a variety in background and percentage of portion covered by a snake in the entire frame.