Q. 83.9( 8 Votes )

Differentiate between the roles of B-lymphocytes and T-lymphocytes in generating immune responses.

OR

Principle of vaccination is based on the property of “memory” of the immune system. Taking one suitable example, justify the statement.

Answer :


OR


Principle of vaccination is based on the property of “memory” of the immune system. Taking an example of polio vaccine in which weakened pathogens of polio are introduced into the body orally. The body starts producing anti-bodies against those pathogens which fight against the pathogens during actual infection. The vaccine generates memory B-cells and T-cells which recognize the pathogen quickly on subsequent exposure. The vaccination works similarly in all the cases.

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