醫(yī)學(xué)免疫學(xué)英語(yǔ)試題-展示頁(yè)
2024-08-20 03:44本頁(yè)面
【正文】 s a marker of ( C)A. B cells B. Helper T cells C. cytotoxic T cell D. Mφ13. MHC class Ⅱ molecules are found on (B ) A. Virtually all cells in the body B. B cells, DC and Mφ C. Virtually all nucleated cells in the body D. Only on virallyinfected cells.14. All of following cytokines are secreted by Th2 cells except (B )A. IL4 B. IFNγ C. IL5 D. IL615. Which of the following is NOT true of CD4+ and CD8+ cell markers? ( D ) A. These are both surface glycoproteins expressed on Tcells. B. These serve to distinguish different types of Tcells, ., helper, suppressor and cytotoxic, from each other. C. These are not found associated with immunoglobulins. D. Both of the markers are present on ALL Tcells. 16.Dendritic cells. DMacrophages. CThymic epithelial cells. BAcquired immunity 2. The signal transduction molecules associated with BCR are (B )A. CD21 and CD81. B. Igαnd IgβCD79a,b C. IgD and IgM. and ITIMs.3. T cells are MHCrestricted in their ability to respond to antigen because (D )A. all antigen must be processed and presented to activate lymphocytes. B. during an infection, all cells in the body present antigen on MHC Class I. C. MHC binds antigen more specifically than TCR does. D. TCR must recognize both antigen and MHC molecules. 4. An antibody Fab contains ( A B)A. plementarity determining regions. B. H and L chain variable regions. C. one antigen binding region. D. one HL interchain disulfide bond. 5 Positive selection in the thymus is mediated by: ( A )窗體頂端AMemory DTolerogen CTolerance BⅠChoose one which is the best answer in each question（40 1 point = 40 ）1. Immunological unresponsiveness to self antigens is called: ( A) 窗體頂端AThe following is characteristic of B but not Tcells: ( D )窗體頂端
公司管理相關(guān)推薦
鄂ICP備17016276號(hào)-1