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Definition of Delayed allergy
1. Noun. An allergic reaction that becomes apparent only hours after contact.
Medical Definition of Delayed allergy
1. A type IV allergic reaction; so called because in a sensitised subject the reaction becomes evident hours after contact with the allergen (antigen), reaches its peak after 36 to 48 hours, then recedes slowly. Associated with cell-mediated responses. See: delayed reaction. Compare: immediate allergy. (05 Mar 2000)
Lexicographical Neighbors of Delayed Allergy
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