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Definitions of antibody

  1. any of a large variety of immunoglobulins normally present in the body or produced in response to an antigen which it neutralizes, thus producing an immune response Scrapingweb Dictionary DB
  2. Any of various bodies or substances in the blood which act in antagonism to harmful foreign bodies, as toxins or the bacteria producing the toxins. Normal blood serum apparently contains variousantibodies, and the introduction of toxins or of foreign cells also results in the development of their specific antibodies. Webster Dictionary DB
  3. A substance formed in the blood which antagonizes toxins. A dictionary of scientific terms. By Henderson, I. F.; Henderson, W. D. Published 1920.