問題詳情
46. Which of the following is true of T cells and B cells?
(A) They are effector cells against specific pathogens.
(B) They are produced from stem cells of the bone marrow.
(C) They can help attack and destroy invading pathogens.
(D) They typically have a short life span.
(E) All of these statements are true.
參考答案
答案：E
難度：計算中-1
書單：沒有書單，新增