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. 2016 Jul;7(3):203–212. doi: 10.15412/J.BCN.03070305

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Copyright© 2016 Iranian Neuroscience Society

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Figure 1. — Comparison of mechanical (A) and thermal (B) threshold ratios (SNL/preSNL), 1 day before and 2, 5, 7 and 21 days after SNL in pup, juvenile, and mature rats. SNL decreased mechanical threshold ratio (postSNL/preSNL) in mature rats than pup and juvenile ones. This ratio was significantly lower in mature rats than pup ones on day 5 (F(1, 14)=29.95, P<0.05) until day 21 (F(4, 56)=37.36, P<0.01) postinjury. (2-way ANOVA repeated measures, n=6, *P<0.05 and **P<0.01). No significant differences were observed between pup and juvenile rats, juvenile and mature rats. Moreover, the thermal threshold ratio showed no significant difference between the 3 different age groups.