Multiple choice

Which among the following is a major factor in controlling the adaptive immune response of the body?

  1. Neutrophil

  2. Complement membrane attack complex

  3. C-reactive protein

  4. Antigen concentration

  5. Haptoglobin
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Lymphocytes are directly driven by antigen. The concentration of antigen is important because the binding to the surface of responding B-cells is necessary for continued stimulation. As the antigen concentration falls through catabolism or neutralisation or complex formation with antibody, the immune response diminishes. In this way, the immune response is not maintained at a high level when the antigen has been eliminated.

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