biological preparations that improv
es immunity to a particular. diseases
Answers
Answer:
these processes which improve immunity to a particular diseases are called vaccination which are done when we are baby they have our body to make a immune system against a particular diseases when these insects vaccines are injected in a body they contain a little contamination of the diseases first of all are white white blood cells doesn't recognise it but later on as these are very small quantity of contamination containing bodies so they don't have a body too much and later on a white blood cells may be aware of these diseases and win the renal disease occurs to us a white blood cells for prerequisite of these vaccinations so that they can recognise the diseases in first chance only so that these diseases may not harm our body.
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