Fig. 2

Time spent in face rubbing behavior (seconds) during Phase I (0–3 minutes) and II (12–45 minutes) of the orofacial formalin test in rats treated with NTG vehicle (CT), NTG, NTG + ARN14663 or ARN14280 or URB597 (n = 6–9 per group). Data are reported as mean ± SEM. One-way ANOVA followed by Tukey’s multiple comparisons test: **p < 0.01 vs CT; °°p < 0.01 and °°°p < 0.001 vs NTG and NTG + URB597