CD40L is transiently expressed on antigen-activated CD4~+ T cells in the form of trimer. It can also be normally expressed on germinal center (GC) B cells or abnormally expressed on B cell-originated malignant cells.

 
  • CD40L主要以三聚體的形式瞬時(shí)表達在抗原活化的CD4~+T細胞表面,也可以瞬時(shí)表達在生發(fā)中心的B細胞和異位表達在一些B細胞系來(lái)源的腫瘤細胞上。
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