The protective immunity was induced against EL-4/Wt tumor cells after the EL-4/IL-12 transfectants were implanted, a stronger CTL activity was obtained.

• 当实验动物接种了EL-4/IL-12转基因细胞后诱发了对肿瘤细胞的保护性免疫,51Cr释放测定中获得了较强的CTL活性。