答:自身抗原是机体的组成成分,自身抗体是免疫系统针对自身抗原发生免疫应答的产物。自身免疫性疾病患者的疾病过程中,免疫系统可以针对多种自身抗原发生免疫应答,造成表达靶抗原的器官和组织的损伤。在疾病过程中,即使是同一种疾病的不同个体或同一患病个体的不同疾病阶段,参 A: The self-antigens are the components of the body, and the autoantibodies are the products of the immune system that are immune to the self-antigens. During the course of the disease in patients with autoimmune diseases, the immune system can have an immune response against a variety of autoantigens, resulting in damage to organs and tissues that express the target antigens. In the disease process, even if the same disease of different individuals or the same diseased individuals at different stages of disease, the reference