What Accounts for Antibody Switching (I

question 54

Multiple Choice

What accounts for antibody switching (i.e., the switch of one B cell from producing one class of antibody to another antibody class that is responsive to the same antigen) ?

• A)mutation in the genes of that B cell, induced by exposure to the antigen
• B)the rearrangement of V region genes in that clone of responsive B cells
• C)a switch in the kind of antigen-presenting cell that is involved in the immune response
• D)a patient's reaction to the first kind of antibody made by the plasma cells
• E)the shuffling of exons for one C region type to another attached to the V-J transcript

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