Poliovirus type 3 capsid, molecular model. This enterovirus causes poliomyelitis (polio) in humans, which affects the nervous system, sometimes leadin
Poliovirus type 3 capsid, molecular model. This enterovirus causes poliomyelitis (polio) in humans, which affects the nervous system, sometimes leading to paralysis. The three types produce similar symptoms. In viruses, the capsid is the protein shell that encloses the genetic material. A capsid consists of subunits called capsomeres that self-assemble to form the shell seen here. Here, this shell, approximately spherical in shape, has icosahedral symmetry. One of the functions of the capsid is to aid the transmission of the viral genetic material into host cells.
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Photo credit: © LAGUNA DESIGN/SCIENCE PHOTO LIBRARY / Alamy / Afripics
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