why it is difficult to develop vaccines for some diseases
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hy
here is your answer
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it is difficult to develop vaccines against the diseases caused by viruses viruses are very specify to hosts they live and multiply only in the living cells they cannot be cultured on artificial medium it is because of these factor and vaccines are difficult to prepared in such cases however living cells of humans body which is exposed to action of a wire secret I heat stable basic antiviral of lower molecular weight is called interferon.
======================
here is your answer
=================
it is difficult to develop vaccines against the diseases caused by viruses viruses are very specify to hosts they live and multiply only in the living cells they cannot be cultured on artificial medium it is because of these factor and vaccines are difficult to prepared in such cases however living cells of humans body which is exposed to action of a wire secret I heat stable basic antiviral of lower molecular weight is called interferon.
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Answered by
11
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