机体每天约有几百万个细胞发生突变。但在一定条件下,极少数突变细胞可转变成癌细胞。而在机体抗肿瘤免疫功能低下时,癌细胞才能逃避免疫系统的清除,从而进一步发展成恶性肿瘤。肿瘤免疫治疗通过各种方式,激发和增强机体的免疫功能 There are about millions of cells in the body that mutate every day. However, under certain conditions, a very small number of mutant cells can be transformed into cancer cells. In the body anti-tumor immune dysfunction, cancer cells can evade the immune system to further develop into malignant tumors. Tumor immunotherapy through a variety of ways to stimulate and enhance the body’s immune function