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. 2013 Nov 15;8(11):e79239. doi: 10.1371/journal.pone.0079239

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© 2013 Wade et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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When compared against their respective control groups, food-maintained responding was not different between CFA-treated (A) versus saline-treated subjects (B), nerve-injured (C) versus sham-operated (D) mice, or vincristine-treated (E) versus saline-treated (F) mice. Food-maintained responding and control lever presses were recorded in daily 2 h sessions and the final area under the curve is represented in panel G for all groups. *indicates significant difference in responding between the respective control and active lever within experimental group was determined by ANOVA, p < 0.05., n=6 per group.