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. 2017 Mar 8;12(3):e0173232. doi: 10.1371/journal.pone.0173232

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© 2017 Clemensson 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 credited.

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Fig 7 — The graphs show comparisons of Group I’s performance on the progressive ratio and FR5 control tests, when rats were maintained on the standard and alternative food restriction protocols. The number of completed ratios (A) and number of lever pushes performed on the reinforced lever (B) were analyzed, as detailed break point analysis could not be performed. The graphs display group mean plus standard error. Repeated two-way ANOVA results are displayed inside each graph, and results from post-hoc analysis are shown for individual data points in case significant genotype differences were detected. (P < 0.05) *, (P < 0.01) ** and (P < 0.001) ***.