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. 2016 Apr 12;12:13. doi: 10.1186/s12993-016-0096-x

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© Chen et al. 2016

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. 4 — Effect of intra-hippocampal injection of M1mAChR selective antagonist (pirenzepine hydrochloride) and α4β2 nAChR antagonist (Dihydro-beta-erythroidine, DHβE) on pain threshold (a mechanic, g; b thermal, sec) in neuropathic pain rats (mean ± SD, n = 4 in each group); *P < 0.05, vs the normal group; ^#P < 0.05, vs the model group