论文部分内容阅读
就目前所知,病毒不产生典型的内毒素和外毒素,病毒的致病特点取决于病毒的特性和宿主的免疫状态。在各种病毒感染时,机体的免疫功能常出现暂时性低下或上升,伴随病毒感染而出现的免疫抑制常成为疾病恶化的主要原因.机体抗病毒的机理包括特异性免疫和非特异性免疫.特异性抗体的作用是中和循环内的病毒和阻止病毒感染宿主细胞,但不能治愈已建立的感染,而细胞免疫不能防止感染,但能排除已被病毒感染的细胞而使感染痊愈。病毒感染引起宿主的免疫抑制能使
As far as we know, the virus does not produce typical endotoxin and exotoxin, the pathogenic characteristics of the virus depends on the characteristics of the virus and the immune status of the host. In a variety of viral infections, the immune function of the body often appear temporarily low or increased, accompanied by the emergence of viral infection and immunosuppression often become the leading cause of disease.Antibody antiviral mechanisms include specific immunity and non-specific immunity. The role of the sex antibody is to neutralize the circulating virus and stop the virus from infecting the host cell, but it can not cure the established infection. However, the cellular immunity can not prevent the infection, but can eliminate the virus-infected cells to cure the infection. The virus infection causes the host’s immunosuppression