Viral Vectors 

Viral vectors are used for gene transfer. Scientists take advantage of the innate abilities of viruses to infuse their genetic material into a cell but instead use viruses to transfer desired genes. For example, genes coding for insulin production in the case of diabetes, leaving the genes which allow the virus to replicate intact.
Different viruses are being employed in gene therapy with varying levels pathogenicity and immunogenicity.
This video explains how viral vectors work in gene therapy. The different types of viral vector including Adenovirus, Retrovirus and Adeno-Associated Virus. The different uses and applications of viral vectors and various side effects including immune reactions and gene overexpression.
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