?:definition
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A propensity to developing a pathological immune process generally directed towards a foreign antigen, which results in tissue injury. It is most often applied to type I hypersensitivity but other hypersensitivity types especially type IV (e.g. allergic contact dermatitis) may be involved. Revised nomenclature for allergy for global use:Report of the Nomenclature Review Committee of the World Allergy Organization, October 2003.
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The disposition to develop an allergic reaction.
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