blocking antibody


  1. Immunology. an antibody that partly combines with an antigen and interferes with cell-mediated immunity, thereby preventing an allergic reaction.


  1. An antibody that combines with an antigen without a reaction but that blocks another antibody from later combining with that antigen.
  2. An immunoglobulin that combines specifically with an atopic allergen but does not elicit an allergic reaction.

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