Figure 7From: Contribution of anterior cingulate cortex and descending pain inhibitory system to analgesic effect of lemon odor in mice The Effect of the inhalation of lemon oil on the formalin test in mice injected a domapine receptor antagonist into the rACC. The graph represent the licking duration time during each 5 min period on the formalin test in mice exposed to lemon oil. Black and white circles indicate the result of control mice and mice injected a domapine receptor antagonist SC23390 into the rACC respectively. Each value represents the mean ± S.E. *P < 0.05 compared to the control group.Back to article page