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Question

Allergens are

A
Infectious and excessive secretions of IgE
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B
Non-infectious and excessive secretions of IgE
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C
Infectious and excessive secretions of IgG
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D
Non-infectious and excessive secretions of IgM
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Solution

The correct option is B Non-infectious and excessive secretions of IgE
An allergen is a type of antigen that produces an immune response and called as an allergy in which the immune system fights off a perceived threat that would otherwise be harmless to the body. It is a non-infectious and capable of stimulating a type-I hypersensitivity reaction through immunoglobulin IgE.
Thus, the correct answer is option B.

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