Antibody

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Antibody are immune system-related proteins called immunoglobulins. Soluble, or secreted, antibody is structurally slightly different than the antibody on the surface of B cells but the antigen recognition sites are similar. The ability of antibodies to recognize specific antigen is an important characteristic .

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Antigen recognition and binding allows antibodies to perform three important functions.

  • opsonization
  • activating complement
  • neutralizing toxins and toxic organisms
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