The __________ that produce allergic ractions are call allergy.
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Explanation:
An allergic reaction occurs when a person's immune system becomes hypersensitive to certain substances, such as foods, pollen, medications, or bee venom. A substance that causes an allergic reaction is called an allergen.
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Explanation:
Pathogens that are present on that object due to that our immune system respond and that response we call allergy is the answer of this question
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