引言为了阐明循环免疫复合物(CIC)的特征与相应疾病活动规律之间的关系,当前研究者们十分重视在对CIC量的测定同时,达到对其质进行分析的目的。所谓CIC的质是指其由以下主要因素决定的生物活性,如:抗原的种类和结合价、抗体的类别及亲和力、Ag/Ab比例、免疫复合物(IC)的大小、结合补体的能力及激活补体的途径等。由于目 INTRODUCTION In order to elucidate the relationship between the characteristics of circulating immune complexes (CICs) and the activity of corresponding diseases, the current researchers attach great importance to the determination of CICs and the analysis of their qualities. The so-called CIC quality refers to its biological activity determined by the following major factors, such as: the type of antigen and the binding value, the type of antibody and affinity, Ag / Ab ratio, the size of immune complexes (IC), the ability to bind complement and Activation of complement and other means. Due to the purpose