Definition of Allergen
Allergen: A substance that can cause an allergic reaction. Common allergens include ragweed pollen, animal dander, and mold.
Source: MedTerms™ Medical Dictionaryhttp://www.medterms.com/script/main/art.asp?articlekey=2194
Last Editorial Review: 3/19/2012
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Allergies & Asthma
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