Immune(免疫)是从拉丁文Immunise衍生而来的。很早以前，人们就注意到传染病患者痊愈后，对该病有不同程度的免疫力。因此，在相当长时期内，免疫在微生物学和病毒学上是指免除瘟疫；换言之，是指对传染因子的再次感染有抵抗力，这是机体在初次感染后对该传染因子产生了免疫应答的结果。在医学上，免疫是指机体接触抗原性异物的一种生理反应。免疫系统有能力产生很多种抗体，免疫系统的控制机制可完成这一调节功能，即只产生所需数量的抗体。根据网络理论，如果任一细胞系中的细胞由于抗原的刺激而被激活并开始繁殖，其它能识别这种基因类型的细胞系也被激活并开始繁殖。这样，如果这一过程连续地进行，就构成了对自身的免疫，并且通过所有淋巴细胞的作用实现了调节机制。-Immune (Immune) Immunise derived　Latin.Long ago, people noticed that infectious diseases after recovery, patients with the disease have different degree of immunity.Therefore, in a long period of time, the immune in microbiology and virology refers to exempt　the pestilence In other words, it is to point to the infectious factors of infection is resistant again, this is the body for the infectious factors in primary infection after the result of the immune response.In medicine, immunity refers to the body contact antigenicity foreign body of a physiological response.Immune system has the ability to produce many kinds of antibodies, the control mechanism of the immune system can complete the adjustment function, which makes the required number of antibodies.According to the theory of the network, if any cell activation by antigen stimulation of cell line and began to breed, other can identify the gene types of cell lines are activated and begin to reproduce.So, if this process continuo