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Immunoelectrophoresis (IES) is the electrophoresis of a determined antigen mixture in an agarose gel that allows the separation of different proteins along the gel slide, and then the lateral diffusion in the gel of an immune serum or a monoclonal antibody. Antibodies specific to the antigens form prepicitation arcs seen over a dark background, or by Coomassie blue staining.
Additional recommended knowledge
This method was very useful to determine the number of antigens recognised against a particular mosaic antigen (crude parasite extracts, for example) but today the Western blot method is preferred because the apparent molecular weight of each antigen can be determined and it is more sensitive, but IEF are still useful when non reducing conditions are needed.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Immunoelectrophoresis". A list of authors is available in Wikipedia.|