allergens are things that can cause allergies. They are specific to the person, but some common alergens are things like: dust, pollen, mold, pet hair, etc...
An allergen is a substance that causes an allergy..
up your rectom. fact
The word 'allergen' means any substance that can cause an allergy
yes, a pathogen is anything that elicits a response from the immune system
an allergy is an unusually high sensitivity to some substance but an allergen is Any substance that causes an allergic reaction
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