VIRUSES

THE SHAPES OF VIRUSES

Polyhedral

  • Adenovirus- A group of DNA viruses first discovered in adenoid tissue, most of which cause respiratory diseases.

Spherical

  • Influenza- A highly contagious viral infection of the respiratory passages causing fever, severe aching, and catarrh, and often occurring in epidemics.

Helical

  • Tobacco mosaic- A virus that causes mosaic disease in tobacco, much used in biochemical research.

Complex

  • Bacteriophage- A virus that parasites a bacterium by infecting it and reproducing inside it.