Antigenic shift

NIAID illustration of potential influenza genetic reassortment

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. Antigenic shift is a specific case of reassortment or viral shift that confers a phenotypic change.

单词	Antigenic shift
释义	Antigenic shift 原声例句 TED-Ed（视频版） This is called antigenic shift, and if you get infected by this version of influenza, none of the antibodies against Napoleon's head are going to help you. 这称为抗原转移，如果您感染了这种流感病毒，针对拿破仑脑袋的抗体将无济于事。英语百科 Antigenic shift 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. Antigenic shift is a specific case of reassortment or viral shift that confers a phenotypic change.
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