Coloured TEM of hepatitis A virus particles

Coloured TEM of hepatitis A virus particles

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Credit: SCOTT CAMAZINE/CDC/SCIENCE PHOTO LIBRARY

Caption: Hepatitis A virus. Coloured Transmission Electron Micrograph (TEM) of Hepatitis A virus particles. Here, viruses appear circular in shape (blue), approximately 25-30 nanometres in diameter. These small RNA viruses are similar in structure to the Picornavirus group (which includes enterovirus and rhinovirus). Hepatitis A virus is the agent which causes infectious hepatitis. The virus attacks the liver producing liver inflammation, fever, followed by jaundice. The virus is excreted in the faeces. Hepatitis A is transmitted by water or food contaminated with infected faeces. The disease is more prevalent in warm countries with poor standards of hygiene.

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Keywords: biology, hepatitis a, hepatitis a virus, infectious hepatitis, microbiology, virology, virus, viruses

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