Which of the following is (are) false regarding B
cells with antigen-MHC complexes?
a. They are stimulated by helper T cells to secrete
cytokines.
b. Helper T cells signal them to divide and
differentiate.
c. On signals from the helper T cells, they produce
clones with identical receptors.
d. Once activated by signals from helper T cells,
they produce IgG, IgA, or IgE immunoglobulins
instead of membrane-bound IgM.
e. All of these are true.
Answer: a
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