Activated T - lymphocytes secrete FasL and kill the tumor cells by engagement of Fas and FasL which can induce apoptosis of tumor cells.

• 活化的T淋巴细胞杀死肿瘤细胞是通过分泌FasL，与肿瘤细胞表面的Fas结合，引起肿瘤细胞凋亡来实现的。