The mechanism of memory and learning in the mrd performed by dopamine and its receptors was discussed . methods and results the immunohistochemistry method was used to investigate the distribution of dopamine and tryosine hydroxylase immunoreactivity in the marginal division of rat striatum using da and th polyclone antibody 但在纹状体边缘区中的da和th免疫阳性纤维较多，呈密集的带状分布，且有蝌蚪状终末，沿背腹方向走行，未见胞体。
