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. 2016 Apr 26;2016:2589483. doi: 10.1155/2016/2589483

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Copyright © 2016 A. P. Herman et al.

This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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The effects of icv. injection of interleukin- (IL-) 1β (50 μg/animal) or Ringer's solution (50 μL) on the relative gene expression (mean ± SEM; n = 6 animals per group) of IL-1β (a), interleukin 1 type 1 receptor (IL-1R1, (b)), interleukin 1 type 2 receptor (IL-1R2, (c)), and interleukin 1 receptor antagonist (IL-1RN, (d)) in ewes during the short night (SN, May/June) and long night (LN, November/December) photoperiods. All data presented in the figure were normalised to the average relative level of IL-1R2 gene expression measured in the control ewes from the SN photoperiod, which was set to 1.0. Different capital letters indicate significant (P < 0.05) differences according to a two-way ANOVA followed by Tukey's post hoc test.