英《柳叶刀》杂志第1卷第8221期(1981年)刊载Michael E Osband等的实验报告,说明甲氰咪胍(Cimetidine)可以延缓带瘤小鼠发生肿瘤转移、延长存活期、灭活抑制性细胞。因此,对抑制性细胞系统从药理学上加以阻断或可成为用免疫疗法治疗人类癌症的一种新的战略性方法。某些实验性动物肿瘤和人肿瘤具有激发免疫应答的细胞抗原。肿瘤免疫治疗的通常方法是试图特异性地(免疫RNA)或非特异性地(卡 An experimental report by Michael E Osband et al. is published in the British Lancet, Vol. 1, No. 8221 (1981), demonstrating that cimetidine can delay tumor metastasis, prolong survival, and inactivate tumor-bearing mice. Inhibitory cells. Therefore, pharmacologically blocking the inhibitory cell system may be a new and strategic approach to the treatment of human cancer with immunotherapy. Some experimental animal tumors and human tumors have cell antigens that elicit an immune response. The usual method of tumor immunotherapy is to try to specifically (immuno RNA) or non-specifically (cards