近年来,越来越多的证据说明许多种免疫性疾病与血循环中的免疫复合物或者它们在组织中的沉积有关。类风湿性关节炎(简称 RA)患者血清与滑膜液(简称 SF)中免疫复合物(简称 IC)的出现和补体水平的下降,滑膜与血清壁内免疫反应物的沉积就是例证。为了探讨 RA 患者血清与 SF 中 IC 的发病率,以及 IC 和临床及有关免疫学表现之间的关系,我们从1981年以来,对86例正 In recent years, a growing body of evidence suggests that many immunological diseases are associated with immune complexes in the blood circulation or their deposition in tissues. The appearance of immune complexes (IC) in serum and synovial fluid (referred to as SF) in patients with rheumatoid arthritis (RA) and the decrease of complement level are exemplified by the deposition of immunoreactive substances in synovium and serum wall. In order to investigate the incidence of IC in serum and SF in RA patients and the relationship between IC and clinical and related immunological manifestations,