問題詳情

26. Primary lymphoid tissues are the sites where lymphocytes________, whereas secondary lymphoid tissues arethe sites where lymphocytes________. 
(A) are stimulated； develop and mature
(B) encounter pathogens； undergo apoptosis
(C) develop and mature； become activated
(D) undergo clonal selection； differentiate from hematopoietic stem cells
(E) die； are phagocytosed after death

參考答案

答案：[無官方正解]
難度：計算中-1
書單：沒有書單，新增