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Antibody - Wikipedia
An antibody (Ab), also known as an immunoglobulin (Ig), is a large, Y-shaped protein used by the immune system to identify and neutralize foreign objects such as pathogenic bacteria and viruses. The antibody recognizes a unique molecule of the pathogen, called an antigen. Each tip of the "Y" of an antibody contains a paratope (analogous to a lock) that is specific for one particular e…
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Antibody - Genome.gov
Antibody is a part of the host cell's defense. It's made by a certain type of white blood cell that's called a B cell. The structure of the antibody consists of two light chains and two heavy chains, and at the very tip of the antibody is a hypervariable region, and this hypervariable region allows the antibody to make different types of antibodies that will respond to all of the antigens that ...
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antibody | Definition, Structure, Function, & Types | …
Aug 27, 2021 · Antibody, a protective protein produced by the immune system in response to the presence of a foreign substance, called an antigen. Antibodies recognize and latch onto antigens in order to remove them from the body. Learn more about the function and structure of antibodies in this article.
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Antibody: MedlinePlus Medical Encyclopedia
Sep 01, 2021 · Antibody. An antibody is a protein produced by the body's immune system when it detects harmful substances, called antigens. Examples of antigens include microorganisms (bacteria, fungi, parasites, and viruses) and chemicals. Antibodies may be produced when the immune system mistakenly considers healthy tissue a harmful substance.
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Antibody | Definition of Antibody by Merriam-Webster
Sep 04, 2021 · Antibody definition is - any of a large number of proteins of high molecular weight that are produced normally by specialized B cells after stimulation by an antigen and act specifically against the antigen in an immune response, that are produced abnormally by some cancer cells, and that typically consist of four subunits including two heavy chains and two light chains —called also ...
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Can antibodies kill a virus?
Antibiotics cannot kill viruses because bacteria and viruses have different mechanisms and machinery to survive and replicate. The antibiotic has no “target” to attack in a virus. However, antiviral medications and vaccines are specific for viruses. Vaccines stimulate your own immune system to produce antibodies,...
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How do antibodies keep us well?
Antibodies help to defend us against infection and also destroy the antigen which is then engulfed and digested by macrophages. White blood cells can also generate chemicals called antitoxins which destroy the fatal some bacteria produce when they have invaded the body.
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What are the parts of an antibody?
Parts of an antibody: Heavy chains - made of alpha, gamma, delta, mu, or epsilon chains. Light chains - made of kappa or lambda chains. Disulfide bonds - hold chains together. Hinge region - allows antibody to flex to reach more antigen sites. Fab fragments - contains variable portion of antibody: antigen-binding sites.
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What causes high antibodies?
When your immune system attacks the thyroid, it often targets thyroglobulin. This causes it to produce antithyroglobulin antibodies. Your doctor can order an antithyroglobulin antibody test to check the level of these antibodies in your bloodstream. A high level may indicate an autoimmune condition.
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