sheep. Antigenic shift is a specific case of reassortment or viral shift that confers a phenotypic change. Antigenic shift is contrasted with antigenic drift...

population. Antigenic drift occurs in both influenza A and influenza B viruses. (Confusion can arise with two very similar terms, antigenic shift and genetic...

influenza viruses evolve through are antigenic drift and antigenic shift. Antigenic drift is when an influenza virus' antigens change due to the gradual accumulation...

population. There are two natural mechanisms for change - antigenic drift and antigenic shift. Antigenic drift arises over a period of time as an accumulation...

Antigenic variation or antigenic alteration refers to the mechanism by which an infectious agent such as a protozoan, bacterium or virus alters the proteins...

However studies in Vietnam have shown that CPV2 can undergo minor antigenic shift and natural mutation to infect felids. Analyses of feline parvovirus...

mutations (antigenic drift) or reassortment in which a new type of HA or NA is produced (antigenic shift). Influenza virus C is only capable of antigenic drift...

vaccine for the Hong Kong flu. He also played a role in the discovery of antigenic shift and drift, the cold-producing adenoviruses, the hepatitis viruses,...

blockade of antigen presentation, cytokine resistance, evasion of natural killer cell activities, escape from apoptosis, and antigenic shift. Other viruses...

mutations (antigenic drift) or reassortment in which a new HA or NA is produced (antigenic shift). Influenza viruses C and D are only capable of antigenic drift...