Poliovirus Type 1

Poliovirus Type 1

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Credit: JEAN-YVES SGRO/VISUALS UNLIMITED, INC. /SCIENCE PHOTO LIBRARY

Caption: Poliovirus Type 1 Mahoney strain protein capsid. The single stranded RNA genome inside the capsid is not visible here. Poliovirus causes poliomyelitis, which is highly contagious and spreads easily by human-to-human contact. Most infections cause no symptoms but about 1% enter the central nervous system destroying motor neurons leading to muscle weakness and acute flaccid paralysis. The polio vaccines developed by Jonas Salk in 1952 (dead virus) and Albert Sabin (live, attenuated virus) in 1962 are credited with reducing the global number of polio cases per year from many hundreds of thousands to around a thousand. Rendering is colored by radial depth-cue to highlight surface topography. View is along the 2-fold icosahedral symmetry axis. Individual

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Keywords: capsid, close up, color image, digitally generated image, enterovirus, horizontal, human biology, icosahedral, mahoney, medical, microbiology, no people, pathogen, picornaviridae, poliomyelitis, poliovirus, red, single object, single stranded rna, type 1, virus, white background, x-ray crystallography, xray, yellow

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