免疫是正常的生理过程,免疫的作用是抵抗感染或进入身体的异物以维持体内平衡,其机制和通路是很复杂的. 免疫力随年龄增长而下降,并与病人的营养状况有关.创伤、烧伤、手术、感染和药物反应等急性损害可以引起暂时而明显的免疫抑制.慢性免疫抑制常常是长期虚弱病的结果.如癌、胶原-血管病变、慢性 Immune is a normal physiological process, the role of immunity is to resist infection or foreign body into the body in order to maintain body balance, the mechanism and access is very complex.Elevation with age and decline, and with the patient’s nutritional status.Traumatic, Acute lesions such as burns, surgery, infections and drug reactions can cause temporary and significant immunosuppression. Chronic immunosuppression is often the result of chronic weaknesses such as cancer, collagen-vascular disease, chronic