Objective: Loss of CD28 expression by CD8+ T cells occurs with age and during chronic inflammatory conditions.CD8+CD28-T......

目的 探讨原发性胆汁性肝硬化(PBC)患者的T淋巴细胞亚群及共刺激信号表达的特点及临床意义.方法 以未经治疗的98例PBC患者为研究组......