Unlocking the Immune System
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Questions and Answers

Which molecule is used by activated helper T lymphocytes to activate antigen-specific B cells?

  • Cytokines
  • CD40
  • Antibodies
  • CD40L (correct)

    • What is the role of CD40 in the process of helper T cell-mediated B lymphocyte activation?

  • Binds to cytokine receptors on B cells
  • Induces heavy-chain isotype switching
  • Binds to CD40L on T cells
  • Stimulates proliferation and antibody synthesis in B cells (correct)

    • What does the CD40L-CD40 interaction stimulate in B cells?

  • Proliferation and Ig production (correct)
  • Cytokine secretion
  • Macrophage activation
  • Antigen presentation

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