64.免疫檢查點抑制劑(immune checkpoint inhibitors)為一種單株抗體,透過與免疫系統中的目標蛋白結合,間
接活化免疫細胞,達到抗癌的效果。下列何者非免疫檢查點抑制劑結合的目標蛋白? (A)CTLA4(cytotoxic T lymphocyte-associated antigen 4) (B)PD-1(programmed cell death protein 1) (C)PD-L1(programmed cell death protein ligand 1) (D)HER2(human epidermal growth receptor 2)