Figure 4From: 5-hydroxyindolacetic acid (5-HIAA), a main metabolite of serotonin, is responsible for complete Freund's adjuvant-induced thermal hyperalgesia in mice 5-HIAA had no effect on thermal hyperalgesia (a) and paw thickness (b) in wild-type CFA mice. n = 4 for each group. Arrow: 5-HIAA injection.Back to article page