Antigenic shift

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Julian Thomas

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Jul 30, 2013, 3:22:21 AM7/30/13
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Antigenic shift is the process by which two or more different strains of a virus, or strains of two or more different viruses, combine to form a new subtype having a mixture of the surface antigens of the two or more original strains. The term is often applied specifically to influenza, as that is the best-known example, but the process is also known to occur with other viruses, such as visna virus in sheep.[1] Antigenic shift is a specific case of reassortment or viral shift that confers a phenotypic change.






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Julian Thomas
http://www.biosolutions.info/


 
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