Which of the Following Is the First Step in the Clonal

question 22

Multiple Choice

Which of the following is the first step in the clonal selection theory for antibody production?

• A)binding of an antigen to an antibody on a B lymphocyte stimulates the cell to replicate
• B)B stem cells in the bone marrow differentiate to become B lymphocytes
• C)immunoglobulins are exposed on the outer surfaces of the B lymphocytes
• D)effector B cells and memory cells are produced
• E)helper T cells recognize a bound antigen, bind to B lymphocytes and stimulate B cell reproduction

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