一、免疫的现代概念什么是免疫?过去传统地把免疫看作宿主对某种传染病原的易感性降低的一种状态,把机体抗感染的能力称为免疫力。以后逐渐认识到免疫对宿主并非常常有利,有时可以对宿主造成损害,乃至引起特有的免疫性疾病。免疫也不完全与抗感染有关,非生物性抗原物质的刺激也可以使机体发生免疫过程。因此认为,免疫是生物体识别来自传染原或非传染性 First, the modern concept of immunity What is the immune? In the past, the immune as the host of a host of infectious agents to reduce susceptibility to a state, the ability of the body called anti-infective immunity. Later on, I gradually realized that immunity is not always beneficial to the host, sometimes causing damage to the host and even causing unique immune diseases. Immunization is not entirely related to anti-infection, non-biological antigen stimulation can also make the body immune process. Therefore, it is thought that immunity is the identification of an organism from an infectious agent or non-infectious agent