Th1和Th2 细胞所诱导的免疫反应能互相调节。在生理条件下 ,机体Th1/Th2 细胞的免疫功能处于动态平衡 ,一旦这种平衡发生偏离 ,机体就会趋向疾病状态。本文综述了近年来有关这方面的报道。 The immune responses induced by Th1 and Th2 cells are mutually regulated. Under physiological conditions, the immune function of Th1 / Th2 cells in the body is in a state of dynamic balance. Once this balance deviates, the organism will tend to be in a diseased state. This article summarizes recent reports in this area.