問題詳情
【題組】43.What are antigens?
(A) Immature dendritic cells.
(B) Foreign and potentially dangerous microbes.
(C)Clear fluids through which dendritic cells travel in the blood.
(D) Killer cells positioned in the skin to combat bacteria.
參考答案
答案：B
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)