The immune response occurring on the first exposure to an antigen is called

Secondary response

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Primary response

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Passive response

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None of the above

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Solution

The correct option is B Primary response
The immune response occurring on the first exposure to an antigen is called primary response. The immune response occurring on second or subsequent exposures to an antigen with stronger response and in a shorter period of time is called secondary response.

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Similar questions

Select the correct option.

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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