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免疫是机体的一种生理性保护反应。它具有三种功能;1.防御功能:抵抗病原微生物及其毒素的侵袭,使机体免受其侵害;2。稳定功能:经常清除机体内已衰老、死亡细胞或损伤组织,以免防碍正常的生理功能或引起自身免疫性疾病,维持体内环境的平衡和稳定;3.免疫监视:随时识别和清除体内发生突变细胞,防止发生癌变。如果上述免疫功能失调或紊
Immunity is a physiological protection response of the body. It has three functions; 1. Defense function: against the invasion of pathogenic microorganisms and their toxins, so that the body from infringement; 2. Stable function: Regular removal of the body has been aging, dead cells or damaged tissue, so as not to hinder the normal physiological function or cause autoimmune diseases, to maintain the balance and stability of the body environment; 3. Immune surveillance: Identification and removal of mutations in the body at any time Cells, to prevent the occurrence of cancer. If the above immune dysfunction or disorder