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प्रश्न
Answer the following question:
The principle of vaccination is based on the property of the "memory" of the immune system. Taking one suitable example, justify the statement.
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उत्तर
The principle of vaccination is based on the property of 'memory' of the immune system. In vaccination, a preparation of antigenic proteins of the pathogen or attenuated (inactivated/weakened) pathogen is introduced in the body. The antibodies produced in the body against these pathogens will neutralize the pathogenic agents during actual infection. The vaccine also generates memory B-cells and T-cells that recognize the pathogen quickly on subsequent exposure. For example, vaccination against polio prevents the actual pathogen from resulting in infection.
संबंधित प्रश्न
State the cause of adenosine deaminase enzyme deficiency.
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Mention role of interferons
Given below is a scheme of classifying immunity against human diseases. Fill up the types of immunity in the blanks 1-9.

State the function of interpherons.
Innate immunity is provided by __________.
____________ is a foreign substance capable of stimulating an immune response.
Virally infected cells release ______ to protect healthy cells from viral infection.
Which of the following components does not participate in innate immunity?
