Question

what is alergic reaction​

Answer 1

Answer:

Alergic reaction is a condition in which the immune system reacts abnormally to a foreign substance.

Explanation:

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Answer 2

Answer:

Allergic reactions are sensitivities to substances called allergens that come into contact with the skin, nose, eyes, respiratory tract, and gastrointestinal tract. They can be breathed into the lungs, swallowed, or injected.

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