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Uncertainty courtesy of jikas: whatis the difference between “antigen” and harmful foreign substance – “bacteria, virus, fungi”??
why do antigens need to be destroyed by antibodies?? cant the phagocytes do this?
where does antigens come from? what is its relationship with viruses, bacteria, and fungi?
there is “hepatitis b virus”… how come there is also “hepatitis b antigen”?
Definitely facts about whatis the difference between “antigen” and harmful foreign substance – “bacteria, virus, fungi”?? may should try to solve difficulties by themself. Eventually this will assist you in many ways: and formulate the way you live much better. Wishing facts about whatis the difference between “antigen” and harmful foreign substance – “bacteria, virus, fungi”?? are likely to be the most effective results tomorrow.
Best answer:
Answer by alynnemgb
In immunology, an antigen is defined as any substance (usually foreign) that is capable of inducing a specific immune response and binds specifically to an antibody or T cell receptors. Antigens are usually just small proteins or peptides and are often small subunits found on the outside of bacteria, viruses, fungi. For example, a bacteria has a host of different proteins that are found on the outermembrane and are exposed to the external environment. These antigens can be recognized by the immune system and subsequently antibodies will be produced against it. Antigens are not necessarily destroyed by antibodies, antibodies bind to the antigens to aid in killing of the bacteria, virus, etc.
Hepatitis B antigen is just a small protein found in the protein coat of the hepatitis B virus that can be recognized by the immune system.
Answer by Jo
An antigen or immunogen is a molecule that stimulates an immune response. Antigens are usually proteins or polysaccharides. This includes parts (coats, capsules, cell walls, flagella, fimbrae, and toxins) of bacteria, viruses, and other microorganisms. Lipids and nucleic acids are antigenic only when combined with proteins and polysaccharides. Non-microbial exogenous (non-self) antigens can include pollen, egg white, and proteins from transplanted tissues and organs or on the surface of transfused blood cells.
bacteria, virus & fungi contain antigen that immune system could recognize and than form some antibody.
Antibodies are Y-shaped proteins that are found in blood or other bodily fluids of vertebrates, and are used by the immune system to identify and neutralize foreign objects, such as bacteria and viruses.
The phagocytes is one of antibody form.
Yes there’re hep. B antigen : HbsAg, HbeAg, etc.
Be sure a lot better?
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