Fig. 1. Dose–response curve of paracetamol ranging from 0.001 to 3 μg for
mechanical allodynia using von Frey filaments (n=3–6 per group)
(A). Mechanical allodynia 11 days after surgery for the ipsilateral side (n=4
per group) (B). Local administration of paracetamol (Para, 100 ng), AM251
(CB1 receptor antagonist, 80 μg), AM630 (CB2 receptor antagonist, 25 μg).
Data are expressed as mean±s.e. mean. ⁎=Pb0.05 for paracetamol vs. NaCl
0.9% (ANOVA adapted for factorial experimental design).