~(51)Cr释放方法只能反映效应细胞的群体细胞毒的活性,难以判定该群体中效应细胞的数量及每个效应细胞细胞毒活性的强弱,更不能反映单个细胞杀伤的特征及动态。近年来,国外学者建立的单个细胞试验方法能在单个细胞水平上研究杀伤细胞与靶细胞的结合能力以及杀伤靶细胞的各种特征及机制。这种方法 The ~(51)Cr release method can only reflect the cytotoxic activity of the effector cells, making it difficult to determine the number of effector cells in the population and the cytotoxic activity of each effector cell, and it cannot reflect the characteristics and dynamics of single cell killing. . In recent years, the single cell test method established by foreign scholars can study the ability of killer cells to bind to target cells and kill various features and mechanisms of target cells at the single cell level. This method