Biology, asked by karan26, 1 year ago

what is the basis of principle of immunization?

Answers

Answered by chandravilas0
4
When a disease causing microbe enters our body our immune system responds against it.
when the same microbe or its close relative again  enters our body our immune system  responds against it vigorously and eliminates the microbe faster than before.

This is the principle of immunization. 
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