Difference between - Allergy and Allergen
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an allergy occurs when the body's immune system sees a substance as harmful and over reacts to it . the substance that cause allergic reactions are allergens
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Allergies are one of the most common chronic diseases. A chronic disease lasts a long time or occurs often. An allergy occurs when the body’s immune system sees a substance as harmful and overreacts to it. The substances that cause allergic reactions are allergens. When someone has allergies, their immune system makes an antibody called immunoglobulin E (IgE). These antibodies respond to allergens. The symptoms that result are an allergic reaction.
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