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An antigenic variation is the mechanism by which an infectious organism changes its surface proteins in favour of circumventing a host immune response.
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What is an antigenic variation?
Antigenic variation is a mechanism used by certain pathogens, such as viruses and bacteria, to change their surface antigens, making it difficult for the immune system to recognize and mount an effective response against them. This allows the pathogen to evade immune detection and establish persistent infections in the host.
What is the difference between antigenic and phase variation?
The Phase Variation is the reversible ability of some bacteria to turn an and off the expression of genes coding for the surface antigens . While the Antigenic Variation is the modification of the gene for an expressed surface antigen by genetic recombination with one of many variable unexpressed DNA sequences. In this manner , the expressed surface antigen can assume many different antigenic structures
What is the suffix of antigenic?
The suffix of antigenic is -ic.
Antigenic determinants is the site of an antobody?
Words " Antigenic Determinant " itself yells that it is on antigen
Does the influenza virus readily change the expressions of its genetic material?
RNA genome of influenza virus is segmented in to 7 pieces. It has the unique property of undergoing two types of genetic variation ie antigenic drift and antigenic shift. In antigenic drift the antigenic variations are minor where genetic recombination take place between strains of two similar species whereas in antigenic shift the recombination take place between strains of dissimilar species leading to major antigenic variations and hence seasonal epidemics.
What are haptens?
antigenic when bound to proteins
What are antigens with only one antigenic site called?
Antigens with only one antigenic site are called Major histocompatibility complex (MHC)
Is swine flu H1N1 an antigenic shift or drift?
Swine flu H1N1 is considered an antigenic shift, as it resulted from a reassortment of genetic material from different influenza virus strains in animals. This led to the emergence of a new subtype that can infect humans.
What the name of a diamond in geometry?
the technical is a antigenic, frogulation.
What is an antigenic shift?
influenza A viruses can trade genetic materials with the viruses of other species. Two different strains trade or merge material, a process known as an antigenic shift.
Can monoclonal antibodies be specific for multiple antigenic determinants?
Yes, monoclonal antibodies can be specific for multiple antigenic determinants if those determinants share similar structural features that allow the antibody to bind to them. This property is known as cross-reactivity. However, some monoclonal antibodies are designed to target a single specific antigenic determinant to ensure high specificity in diagnostic or therapeutic applications.
What contributes to antigenic shift in influenza viruses?
a segmented genome
