Viral Structure
Viruses are non-living, infectious particles composed of genetic material (either DNA or RNA) surrounded by a protective protein coating. They vary in size, shape and complexity and are capable of entering and hijacking the cells of living organisms to replicate themselves. Viruses are important to science and medicine as they can cause diseases in humans, plants, and animals. They can also be used in biotechnology to create genetically modified organisms and in the development of gene therapy. Understanding virus structures and the functions of their components is essential to advance our knowledge of human disease, especially in the development of antiviral strategies.
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