CHRIS BJORNBERG / SCIENCE PHOTO LIBRARY CHRIS BJORNBERG / SCIENCE PHOTO LIBRARY
Computer illustration of adenovirus infecting GI tract tissue. Adenoviruses are medium-sized (90-100 nm), nonenveloped, icosahedral viruses composed of a nucleocapsid and a double-stranded linear DNA genome. They most commonly cause respiratory disease in humans, but can also cause genitourinary diseases and gastroenteritis.
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