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KidsHealth > Kids > WORD! A Glossary of Medical Words > A > Word! Allergen


 

Allergen

(En español: Alérgeno)

Say: al-ur-jun

An allergen is a medical word for anything that causes an allergic reaction. Allergens can be many different things, including grass, dust mites, or animal dander — the stuff that flakes off dogs' and cats' skin.




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