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Changes in PWLs following unilateral injection of carrageenan in LC-lesioned (n = 9) and sham-operated rats (n = 20). (A) The inflamed paws. (B) The contralateral non-inflamed paws.▲P < 0.01, significantly different from PWLs before injection. *P < 0.01, significantly different between two groups of rats (Tsuruoka and Willis, 1996b).
