DNA into cells, which can be accomplished by several methods, summarized below. This genetic material contains basic ‘instructions’ of how to produce more copies of these viruses, hacking the body’s normal production machinery to serve the needs of the virus. The host adenoviral vectors for gene therapy pdf will carry out these instructions and produce additional copies of the virus, leading to more and more cells becoming infected. Some types of viruses insert their genome into the host’s cytoplasm, but do not actually enter the cell.
Others penetrate the cell membrane disguised as protein molecules and enter the cell. Shortly after inserting its DNA, viruses of the lytic cycle quickly produce more viruses, burst from the cell and infect more cells. Lysogenic viruses integrate their DNA into the DNA of the host cell and may live in the body for many years before responding to a trigger. The virus reproduces as the cell does and does not inflict bodily harm until it is triggered.