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Effect of WIN 55,212-2 (0.1 mg kg−1, s.c.) daily administered in CCI rats on mechanical hypersensitivity. Withdrawal threshold is expressed as g. Data represent mean±s.e.m. of 8–10 rats. **P<0.01 vs presurgery; °°P<0.01 vs CCI/vehicle; #P<0.05 vs CCI/WIN 55,212-2 on day 7.
