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对动物和人所作研究结果证实,抗原可作为非自身性的成分而被宿主的免疫系统识别。尽管宿主具有抗肿瘤的细胞和体液免疫反应,肿瘤仍会进行性地增长.宿主的免疫力在起初是完好的,但随着肿瘤不断地增长和扩散,会出现全身免疫反应的损害。至今,仍有一些问题不能获得解答:面对宿主完好的抗肿瘤免疫反应,肿瘤为什么仍能不断地增长?肿瘤增长过程中,究竟什么因素造成宿毛进行性免疫抑制?这种抑制是否由肿瘤直接引起,或者仅是宿主体质逐渐虚弱的表现,或是宿主方面某些因素作用的结果?本文
Studies conducted on animals and humans confirm that antigens can be recognized by the host’s immune system as non-self-contained components. Although the host has anti-tumor cellular and humoral immune responses, the tumor will continue to grow progressively, and the host’s immunity is initially good, but as the tumor continues to grow and spread, systemic immune response may occur. So far, there are still some problems can not be answered: The face of the host intact anti-tumor immune response, why the tumor can continue to grow? Tumor growth process, what factors caused by progressive hair immunosuppression? This inhibition by the tumor directly Cause, or simply the performance of the host physique gradually weak, or host some of the factors that result?