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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 a dead or altered viruses or bacteria that are used to stimulate the body to be on alert are called?
Dead or altered viruses or bacteria that are used to stimulate the body's immune response are called vaccines. Vaccines contain weakened or inactivated forms of the pathogen, or certain proteins or subunits of the pathogen, to trigger an immune response without causing the disease. This allows the body to recognize and fight the pathogen more effectively if encountered in the future.
Many pathogens injure the host by producing what?
Many pathogens injure the host by producing toxins. Toxins are harmful substances produced by certain pathogens that can damage host cells, tissues, and organs, leading to the development of disease symptoms.
What is a pathogen that grows inside a cell called?
An intracellular pathogen is a pathogen that grows inside a host cell. Examples include viruses, some bacteria like Chlamydia, and certain parasites like Plasmodium.
Are viruses pathogen?
Anything that causes disease is considered to be pathogenic. This includes viruses and bacteria. People who come in contact with certain of these organisms may become very ill.
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 a dead or altered viruses or bacteria that are used to stimulate the body to be on alert are called?
Dead or altered viruses or bacteria that are used to stimulate the body's immune response are called vaccines. Vaccines contain weakened or inactivated forms of the pathogen, or certain proteins or subunits of the pathogen, to trigger an immune response without causing the disease. This allows the body to recognize and fight the pathogen more effectively if encountered in the future.
Is it true that antigenic proteins from certain pathogens can be administered as vaccine's instead of using weekend or killed viruses?
True.
What solutions contain all or part of a harmless version of a pathogen?
Vaccines are the primary solutions that contain all or part of a harmless version of a pathogen. They often include inactivated or attenuated forms of the pathogen, or specific proteins or pieces of genetic material that stimulate an immune response without causing disease. Other examples include certain therapeutic treatments, like monoclonal antibodies, which may utilize harmless components of pathogens to target and neutralize infections. These solutions help the immune system recognize and fight off the actual pathogen if encountered in the future.
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
Why do vaccines have to be changed every year?
Because certain viruses and bacteria evolve to become resistant to the old vaccines.
A vaccine provides?
Vaccines provides active immunity to certain diseases.
What is a pathogen that grows inside a cell called?
An intracellular pathogen is a pathogen that grows inside a host cell. Examples include viruses, some bacteria like Chlamydia, and certain parasites like Plasmodium.
Many pathogens injure the host by producing what?
Many pathogens injure the host by producing toxins. Toxins are harmful substances produced by certain pathogens that can damage host cells, tissues, and organs, leading to the development of disease symptoms.
What is special about vaccines?
Because it helps to prevent certain diseases to immunize our body
Why are people vaccinated?
People are given vaccines so that they are protected from certain illnesses.
Why do vaccines are giving to people?
in order to immunize them against certain diseases. (2) :)
