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Question

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Statement 1: Allergens causes an exaggerated response of the immune system

Statement 2: Mast cells on exposure to allergens produce only histamines

Statement 3: When a body gets exposed to active microorganisms from nature it is called natural passive immunity.


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Solution

Allergens are substances that produce an exaggerated immune response in the body of individuals.

Mast cells on exposure to allergens not only produce histamines but also produce various chemicals like cytokines, prostaglandins etc. to enhance the inflammatory responses in case of allergy.

When a body gets exposed to active microorganisms from nature, it results in natural active immunity as it triggers the body for the production of antibodies that fights the infection.


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