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Anticorps (Immunoglobuline) under a microscope!

Les anticorps sont des protéines xénophobes dont le travail consiste à faire capituler les intrus étrangers. Découvrez comment et pourquoi.

Antibodies are Y-shaped proteins produced by the body’s immune system to help identify foreign interlopers such as viruses, bacteria, or toxic chemicals. Secreted by specialized B-cells, they function by grabbing onto suspicious antigens using the tips of their arms, and holding fast until other immune system cells have a chance to neutralize the threat.

While the bodies of antibodies come in a few specific types (or isotypes), the tips (or paratopes) can be custom made, like a lock to a key, to attach only to specific parts (or epitopes) of an antigen. There are more than 10 billion combinations to this lock, so it can identify a lot of alien intruders! (Sometimes a single antigen has a number of epitopes – which means it gets tackled by a swat team of antibodies, giving it little chance of escape.)

Although antibodies try to identify only foreign substances, sometimes they make mistakes and falsely accuse normal parts of the body of trespassing. In these instances, autoimmune diseases can result, as the body becomes a police state and unleashes its immune system on itself.

But normally, antibodies exercise good judgment. In addition, vaccines can help prepare antibodies for threats they’ve never encountered. By providing a sneak peek at epitopes found on genuine threats, vaccines train antibodies to respond quickly if they ever encounter the same threat again, allowing the body to neutralize it before it has a chance to fully develop.

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Anticorps (Immunoglobuline) GMEU-PD-0016

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Product Details

Informations complémentaires

Sizes Giantmicrobes are based on actual microbes, cells, organisms and other critters, only 1,000,000 times actual size!
Gigantic (GG) 40-60cm
XL (XL) 25-38cmDoudoune Fourrure T Tee Capuche Shirts Superdry Studio qCwES8qdx
Original (PD) 12-20cm
Minis (MM) 5-10cm each
Keychain (KC) 5-10cm with clip
Materials Plush from all new materials. Stuffed with polyester fiber fill. Surface washable: sponge with water & soap, air dry.
Emballage Each plush microbe includes a printed card with fun, educational and fascinating facts about the actual microbe or cell.
Safety Every product meets or exceeds U.S. and European standards for safety. For ages 3 and up.

All about Anticorps (Immunoglobuline)

Antibodies are Y-shaped proteins produced by the body’s immune system to help identify foreign interlopers such as viruses, bacteria, or toxic chemicals. Secreted by specialized B-cells, they function by grabbing onto suspicious antigens using the tips of their arms, and holding fast until other immune system cells have a chance to neutralize the threat.

While the bodies of antibodies come in a few specific types (or isotypes), the tips (or paratopes) can be custom made, like a lock to a key, to attach only to specific parts (or epitopes) of an antigen. There are more than 10 billion combinations to this lock, so it can identify a lot of alien intruders! (Sometimes a single antigen has a number of epitopes – which means it gets tackled by a swat team of antibodies, giving it little chance of escape.)

Although antibodies try to identify only foreign substances, sometimes they make mistakes and falsely accuse normal parts of the body of trespassing. In these instances, autoimmune diseases can result, as the body becomes a police state and unleashes its immune system on itself.

But normally, antibodies exercise good judgment. In addition, vaccines can help prepare antibodies for threats they’ve never encountered. By providing a sneak peek at epitopes found on genuine threats, vaccines train antibodies to respond quickly if they ever encounter the same threat again, allowing the body to neutralize it before it has a chance to fully develop.

Description

An antibody, or immunoglobulin, is a Y shaped protein that is used to identify and protect your body from harmful substances. There are amino acid chains on the ends of the Y that attach like puzzle pieces to a specific harmful substance, called an antigen. Humans can produce different antibodies by varying the amino acid chains.

Once the antibody attaches to the threat, it is able to protect the body in a couple different ways. The first is to coat the antigen in order to prevent it from hurting the healthy body cells. Another way is to tell the rest of the immune system to attack the threat. The antibody is the perfect gift for a biology teacher!

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Name

Alpha, Gamma, etc were used to distinguish the different immunoglobulin categories as part of an arbitrary scientific naming process. In 1964, the World Health Organization defined a system for naming each of the isotopes: IgA, IgG, etc.

Types
IgA: 10%-15%: found in mucosal places of the body such as the respiratory, digestive, and reproductive tracts, as well as in tears, saliva, and breast milk. They protect the body from antigens that come from the outside.

IgG: 75%-80%: found in all bodily fluids. These antibodies fight bacterial and viral infections.

IgM: 5%-10%: found in blood and lymph fluid and are the first antibodies made in response to an infection. They help the immune system to destroy the antigen by creating a bridge for other proteins to attach to the antigen and attack it.

IgE: found in mucous membranes, lungs, and skin. They are responsible for allergic reactions.

IgD: found in small amounts in belly and chest tissue. They activate the B-cells that they are attached to.
Actual Size 10 nm, meaning it would take 100,000 antibodies to stretch across a Skittles candy.
System Immune system
Quantity A healthy human has approximately 1012 different antibodies.
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History Discovery and Research:

1890: Emil von Behrig and Kitasato Shibasaburo recognized a substance in the blood that could neutralize and counter infections. They took serum from animals immunized against diphtheria and transferred it to animals who were suffering from it. This cured the infected animals and earned Behrig the Nobel Prize in 1901.

1920: Michael Heidelberger and Oswald Avery showed that antibodies were proteins, and antibodies could precipitate antigens.

1948: Astrid Fagraeus showed that plasma B cells are involved in antibody production.

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Fascinating Facts Antibodies in Babies: IgG are the only antibodies that can cross the placenta in a pregnant woman in order to protect the fetus.

Antibody: is a 2002 science fiction thriller.

Antibodies: is a 2005 German crime-drama-thriller.

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