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  SARSCoV2

Sigma KEE - SARSCoV2
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SARS-CoV-2
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Parents coronavirus Coronaviruses are a group of RNA viruses that cause diseases in mammals and birds and include the viruses that cause SARS, MERS and COVID19. In humans and birds, they cause respiratory tract infections that can range from mild to lethal. Coronaviruses constitute the subfamily Orthocoronavirinae, in the family Coronaviridae, order Nidovirales, and realm Riboviria. They are enveloped viruses with a positive-sense single-stranded RNA genome and a nucleocapsid of helical symmetry.The genome size of coronaviruses ranges from approximately 26 to 32 kilobases, one of the largest among RNA viruses. They have characteristic club-shaped spikes that project from their surface, which in electron micrographs create an image reminiscent of the solar corona, from which their name derives.[from Wikipedia]


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