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. 2019 Mar 25;12:23. doi: 10.1186/s13041-019-0444-5

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© The Author(s). 2019

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. 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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Fig. 1 — The neuroprotective effects of osteocalcin (OCN) in rats with Parkinson’s disease (PD). OCN, administered either peripherally or centrally, ameliorates motor dysfunction, reduces dopaminergic neuronal loss and diminishes glia-mediated inflammatory responses in PD rat model induced by 6-OHDA via the AKT/GSK3β signaling pathway