what do you mean by active and passive immunisation.
Kindly refer to the following link.
https://www.meritnation.com/ask-answer/question/wht-isimmune-system/science/3235094
what do you mean by active and passive immunisation.
Kindly refer to the following link.
https://www.meritnation.com/ask-answer/question/wht-isimmune-system/science/3235094