Plasma cells and memory B cells differentiate most immediately from Select one: a. centrocytes b. centroblasts O c. B-1 cells d. IgG-secreting B cells.
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- The germinal center of a lymph node a. Is the location of B cells undergoing clonal expansion b. Is the location of plasma cells c. Is the location of B cells that have not yet contacted their antigen d. In a micrograph, Is the light-colored center of an activated lymphoid follicleWhich of the following cell types can directly regulate B cell activation and differentiation? 單選: A. Th1 cells B. Th2 cells C. Dendritic cells D. Macrophages E. Cytotoxic T cells O O O OB cells that produce and release large amounts of antibody are called: a. Memory cells b. Basophils c. Plasma cells d. Killer cells e. Neutrophils
- All of the following occur after B cells leave the bone marrow except a. peripheral tolerance b. receptor editing c. differentiation into plasma cells d. formation of follicular center cell lymphomas e. production of memory B cells f. recirculation between lymph, blood, and secondary lymphoid tissues.Which of the following is TRUE about B cells? A. are lymphocytes B. become mature in the thymus C. are responsible for cell-mediated immunity D. are produced in the adult spleenmatch the cytokine with its description. 1.Interleukin-1 2.Interleukin-2 3.Interleukin-12 a. Stimulates formation of TH1 helper T lymphocytes b. Stimulates ACTH secretion c.Stimulates proliferation of cytotoxic T lymphocytes d.Stimulates proliferation of B lymphocytes
- Contrast the structure of a B cell with that of a plasma cell, and explain how their structural difference relates to their functional difference?44) Concerning the functions of macrophages, which of the following statements is CORRECT: a. Macrophages can phagocytose pathogens and produce antibodies b. Macrophages can help T cells to stimulate complement c. Macrophages can phagocytose pathogens and are antigen presentation cells d. Macrophages activate the clotting cascade e. None of the aboveDeficiencies in complement components C1–C4 are associated with _____. a. neutropenia b. chronic granulomatous disease c. immune-complex disease d. opportunistic infections e. leukocytosis.
- Which of the following characteristics apply to T lymphocytes?a. mature in bone marrowb. mature in the thymusc. Both a and b are correct.d. None of these are correct.which two of following statements are true for an antigen prsent cell such as dendritic cell? a. Phagocytes are extra cellular pathogens b. Display processed pathoic peptide on the surface of the cell c. Produce antibodies specific for a pathogen d. Activate naive erythrocytesWhich of the formed elements arise from myeloid stemcells?a. B cellsb. natural killer cellsc. plateletsd. all of the above