delayed-type hypersensitivity response

Definition / meaning of delayed-type hypersensitivity response

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.

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Source(s):

The Web site of the National Cancer Institute (http://www.cancer.gov/)

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