Behavioral assessment in different groups. (A) Changes in mechanical hypersensitivity among the Sham, SNL, sham-WTD-treatment and SNL-WTD-treatment groups. (B) Changes in heat hypersensitivity among the sham, SNL, sham-WTD-treatment and SNL-WTD-treatment groups. The data are represented as the mean±SEM (n=6). #P<0.05 versus the sham group; *P<0.05, **P<0.01 versus the SNL group, respectively.