The changes of ACTH cells in the pars distail hypopysis on the morphine dependent rats and the abstinent rats and the positive control rats were studied by immunohistochemistry.

• 用免疫组织化学方法观察吗啡依赖大鼠 ,IVC戒断大鼠和 IVC正常大鼠垂体远侧部 TSH细胞的变化。