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4 Written questions

4 Multiple choice questions

  1. mass of lymphatic tissue in the nasopharynx
  2. a system of proteins that circulate in the bloodstream and that combine with antibodies to protect against antigens
  3. Formation of antibodies and lymphocytes after exposure to an antigen
  4. use of immune cells, antibodies, or vaccines to treat or prevent disease

4 True/False questions

  1. immunoglobinsantibodies secreted by the B cells are proteins; found primarily in the plasma, Antibodies produced by plasma cells in response to antigenic stimulation.


  2. antibodyProtein produced by B cell lymphocytes to destroy antigens


  3. cytokineschemicals released by T helper cells that stimulate B cells, proteins that aid and regulate the immune response


  4. cytotoxic T cellT lymphocyte that directly kills foreign cells


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