Question
Which of the following is not involved in the activation of a B cell? (a) antigen, (b) helper T cell, (c) cytokine, (d) cytotoxicT cell.
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The first is the antigen, which is the foreign substance that triggers the immune response. Show more…
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A major difference between the activation of $\mathrm{B}$ cells and the activation of cytotoxic T cells is that a. cytotoxic T cells must interact with antigens bound to plasma membranes. b. $\mathrm{B}$ cells do not interact with any other type of lymphocyte. c. $\mathrm{B}$ cells are suppressed by helper $\mathrm{T}$ cells. d. cytotoxic T cells produce antibodies. e. only cytotoxic T cells express immunoglobulins on their membranes.
'Which of the following among A-D is not a characteristic of T cells? A) Cytotoxic T cells can kill virus-infected cells_ B) Cytotoxic T cells respond to antigen bound to MHC class molecules _ C) Certain T helper cells bind to and activate macrophages and dendritic cells_ D) Certain T helper cells activate B cells for antibody production_ E) All the above are characteristics of T cells'
A major difference between the activation of $\mathrm{B}$ cells and that of cytotoxic T cells is that a. cytotoxic T cells must interact with antigens bound to plasma membranes. b. $\mathrm{B}$ cells interact only with free antigens. c. $\mathrm{B}$ cells are not regulated by helper $\mathrm{T}$ cells. d. cytotoxic T cells produce antibodies. e. only cytotoxic T cells express immunoglobulins on their membranes.
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