近年实验已证明[1],特发性血小板减少性紫癜(ITP)是由于患者体内存在有自身抗血小板抗体致使血小板被巨噬细胞迅速清除,使血小板数量减少,临床出现出血症状。迄今对免疫调节细胞在本病发病过程中的作用研究较少。随着T细胞亚群单克隆抗体技术的发展,免疫调节机制在某些免疫性疾病的发病中的作用已日益受到重视。我们采用OKT系统单克隆抗体对15例特发性血小板减少性紫癜患儿外周血中的 In recent years, experiments have shown that [1], idiopathic thrombocytopenic purpura (ITP) is due to the existence of patients with anti-platelet antibodies in their own body so that rapid removal of platelets by macrophages, reducing the number of platelets, clinical symptoms of bleeding. So far, the role of immunoregulatory cells in the pathogenesis of this disease has been less studied. With the development of T lymphocyte subsets monoclonal antibody technology, the role of immunomodulatory mechanisms in the pathogenesis of certain autoimmune diseases has received increasing attention. We use OKT system monoclonal antibody in 15 cases of idiopathic thrombocytopenic purpura in children with peripheral blood