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Types of Allergens

Allergens can be anywhere, indoors, outdoors, at work, at home, in our food, and in our air, and are typically grouped into the eight major categories described below.

Allergens are foreign substances that can enter the body and cause an allergic reaction in certain people with a hypersensitive response. While most people mount significant immunoglobin E (IgE) responses only as a defense against parasitic infections, some individuals experience a similar response against common environmental antigens, which are then identified as allergic reactions.

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