Virus particles and bacterium. Coloured transmission electron micrograph (TEM) of rotaovirus particles (orange) with an Escherichia coli, gut bacteriu


Virus particles and bacterium. Coloured transmission electron micrograph (TEM) of rotaovirus particles (orange) with an Escherichia coli, gut bacterium (green). Rotaviruses are named after their wheel-like appearance, with a rounded core and radiating spikes on the outer protein shell. They cause vomiting and diarrhoea and are the most common cause of severe diarrhoea in children. Escherichia coli is a normal part of the intestinal flora, where they aid digestion. However, some strains can produce toxins that lead to severe illness. Magnification: x50000 when printed 10 centimetres wide.


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Photo credit: © EYE OF SCIENCE/SCIENCE PHOTO LIBRARY / Alamy / Afripics
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