Define immunity. What are the different types of immunity?

Define immunity. What are the different types of immunity?
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Answer :

Definition: Immunity is the power of body to resist effect of invasion of micro organisms

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Active Immunity-Antigens are injected in human body; as a result antibodies are formed.

It develops slowly

Remains for longer time

Treatment is preventive

Passive Immunity-Readymade antibodies are injected in human body.

It develops quickly, it remains for short period treatment is therapeutic

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