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Adenoviruses. Coloured transmission electron micrograph (TEM) of adenoviruses. Each virus consists of an icosahedral protein coat (capsid, blue and green) surrounding double stranded deoxyribonucleic acid (DNA), the virus' genetic material. The capsid has a glycoprotein fibre projecting from each of its apexes that aids attachment of the virus to its host cell. Adenoviruses most commonly cause respiratory disease in humans, but can also cause genitourinary diseases and gastroenteritis. These viruses have also proved successful for use as vectors in gene therapy and DNA vaccination. Magnification: x74000 when printed 10 centimetres wide.
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