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picornavirus |
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picornavirusAny of a group of the smallest known animal viruses. (Pico refers to their small size, rna to their core of RNA.) This group of spheroidal viruses includes viruses that attack the vertebrate intestinal tract and often invade the central nervous system as well (such as polioviruses), viruses that infect tissues in the vertebrate nose (rhinoviruses), and the virus agent of foot-and-mouth disease. picornavirus [pē′kȯr·nə‚vī·rəs] (virology) A viral group made up of small (18-30 nanometers), ether-sensitive viruses that lack an envelope and have a ribonucleic acid genome; among subgroups included are enteroviruses and rhinoviruses, both of human origin. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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