After the injection of formalin into the sigmoid wall,pain score increased remarkably,and companied by the increased expression of Fos in the CB-HRP labeled neurons.

• 乙状结肠痛刺激后,不仅疼痛行为学评分显著增加,而且远位触液神经元内Fos表达的数量显著增加,与空白对照组相比有显著性差异。