新的病原体进入机体后，机体一般需要一个月的时间才能产生相应的抗体，因此首先由免疫细胞——B淋巴细胞通过共同途径对病原体进行攻击。
It takes a month for the body to make antibodies to a newly encountered pathogen, so a bunch of immune-system cells called B lymphocytes first fire back in a general way.
目的：cd3ak细胞是由抗cd3单克隆抗体和IL 2共同激活诱导的肿瘤杀伤细胞。
Objective: CD3AK cells were tumor-killing cells induced by costimulation of anti-CD3McAb and IL-2.
应用抗CD3单克隆抗体和基因重组人IL-2共同诱导人外周血单个核细胞，制备抗CD3单克隆抗体活化的杀伤细胞（CD3AK）。
Human CD3AK cells were prepared from peripheral blood mononuclear cells by culturing them in recombinant IL-2 and anti CD3McAb.
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