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. Author manuscript; available in PMC: 2016 Sep 1.
Published in final edited form as: J Pain. 2015 Jun 24;16(9):903–912. doi: 10.1016/j.jpain.2015.06.006

Figure 1.

Figure 1

(A) Systemic gabapentin injected on post-operative day 13 raises the mechanical threshold for nocifensive response back towards pre-operative levels. *P<0.05 compared to the pre-operative level (repeated measures ANOVA on responses after gabapentin) shows that the relief by gabapentin never reaches the pre-operative condition. † P<0.05 compared to the threshold at POD 13 (repeated measure ANOVA), just before gabapentin injection, shows that relief is only significant for the 1 h after gabapentin. (B) Responses to gabapentin of threshold in individual rats in the group that is averaged for Figure 1A. TRR, thoracotomy with rib retraction.