Methods The expressions of costimulator CD28,CD152(CTLA-4),CD154(CD40L),and inducible costimulator(ICOS) were analyzed by flow cytometry.

• 方法采用流式细胞术分析SLE和RA患者T细胞表面共刺激分子CD28、CD152/CTLA-4、CD154/CD40L和ICOS表达情况。