14. Which of the following is NOT a required step in B and T lymphocyte development?
(A) Proliferative expansion of precursor cells
(B) Cell surface expression of complete antigen receptor complexes
(C) Positive selection
(D) Activation of precursors by foreign antigens
(E) Pre-antigen receptor expression.

答案:登入後查看
統計: 尚無統計資料

詳解 (共 1 筆)

#6802426
1. 題目解析 這道題目要求我們找出在B...
(共 1015 字,隱藏中)
前往觀看
0
0