CD4+ T cell is mainly response in the early stage of infection, CD4+ T cell response is replaced by CDg+ T cell response in later period of infection. Levamisole can regulate the immune response of mice infected with Echinococcus granulosus.

• 细粒棘球蚴感染小鼠早期(12周以前)以CD_4~+T细胞为主,细粒棘球蚴增长缓慢,感染后期(16周和20周)逐渐以CD_8~+T细胞为主,细粒棘球蚴明显增殖。 左旋