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Some virus are harmless, and they can serve as a protection on other harmful viruses. Some of these viruses are vaccinia virus or shope fibroma virus that protects against other viruses, which are harmful. Viruses are also used in genetic modification in an organism, some are also used in therapies.
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We know that virus cause many disease.. but today's generation.. a newly field to be introduced .. viruses also play vital roles .. genetic engineering use them as a tool for killing a population of tumor or cancerous cells.. also virus programmed to carry genetic information into cell.
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