問題詳情
26. T cell activation requires the formation of a transient cell-cell contact calledimmunological synapse between T cell and dendritic cells (DCs). Activated I cellssynthesize and secrete interleukin-2 (IL-2) for the proliferation and differentiationof T cells. What is this is an example of?
(A) synaptic signaling
(B) autocrine signaling
(C) endocrine signaling
(D) paracrine signaling
(E)juxtacrine signaling
參考答案
答案：B
難度：計算中-1
書單：沒有書單，新增
用户評論
【涵涵（邀請碼107252）】評論
題目提及活化的 T 細胞會合成分泌大量 IL-2，IL-2作用在自身上為 T 細胞增殖所需，這個現象稱為Autocrine action。T 細胞活化需要樹突細胞提供 2個訊號: (1) MHC:petide (DC) to TCR (T); (2)CD80/CD86 (DC) to CD28 (T)。