21. What is immunization ?
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Answer:
to increase defensive power of body towards foreign substance which may enter to body.
It is to increase the immunity of body.
it is of two types-1. active immunity 2.passive immunity
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Answered by
0
Answer:
To increase defensive power of body towards foreign substance which may enter to body
It is to increase the immunity of body .
It is of two types - 1 activity immunity
2- passive immunity
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