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. 2014 Oct 25;14:416. doi: 10.1186/1472-6882-14-416

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© Alfawaz et al.; licensee BioMed Central Ltd. 2014

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Photograph showing comet tailing in the PPA-treated group (II) together with the protective and therapeutic effects of vitamin D (III &IV) in rat brains, compared to control (I).