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. 2014 Aug 4;14:285. doi: 10.1186/1472-6882-14-285

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© Fang 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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The paw withdrawal thresholds (PWTs) of rats in each group at different time-points. PWTs were measured at pre-injection, 5, 6, 25 and 49 h after NS/CFA injections. Values represent mean ± SEM; n = 10 per group for each time point. **P < 0.01 versus control group at the corresponding time point. ^▲▲ P < 0.01 versus model group at the corresponding time point. ## P < 0.01 versus sham EA group at the corresponding time point.