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NCI Dictionary of Cancer Terms


delayed-type hypersensitivity response  listen  (...HY-per-SEN-sih-TIH-vih-tee reh-SPONTS)

  An inflammatory response that develops 24 to 72 hours after exposure to an antigen that the immune system recognizes as foreign. This type of immune response involves mainly T cells rather than antibodies (which are made by B cells). Also called DTH.