what does a agglutination mean?
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Agglutination is the clumping of particles. The word agglutination comes from the Latin agglutinare (glueing to). Agglutination is the process that occurs if an antigen is mixed with its corresponding antibody called isoagglutinin. This term is commonly used in blood grouping.
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Definition. Agglutination is the process of clumping of antigens with their respective antibodies. Precipitation is a process where soluble antigens bind with their specific antibody at an optimum temperature and pH, resulting in the formation of an insoluble precipitate. Antigen size.
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Cold agglutinin disease is a rare type of autoimmune hemolytic anemia in which the body's immune system mistakenly attacks and destroys its own red blood cells .
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Agglutination is commonly used as a method of identifying specific bacterial antigens, and in turn, the identity of such bacteria. Because the clumping reaction occurs quickly and is easy to produce, agglutination is an important technique in diagnosis.
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The tube agglutination test is the most widely used procedure for purposes of international trade. Brucella abortus antigen is used and results are expressed as titers (international units of anti-Brucella antibodies).
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In hematology, red cell agglutination or autoagglutination is a phenomenon in which red blood cells clump together, forming aggregates. It is caused by the surface of the red cells being coated with antibodies.
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Agglutination is the process that occurs if an antigen is mixed with its corresponding antibody called isoagglutinin. ... This increases the efficacy of microbial elimination by phagocytosis as large clumps of bacteria can be eliminated in one pass, versus the elimination of single microbial antigens.
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Agglutination is the visible expression of the aggregation of antigens and antibodies. Agglutination reactions apply to particulate test antigens that have been conjugated to a carrier. ... If an antigen is present in a test specimen, it will bind to the antibody and form visible, cross-linked aggregates.
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Agglutination, a grammatical process in which words are composed of a sequence of morphemes (meaningful word elements), each of which represents not more than a single grammatical category. This term is traditionally employed in the typological classification of languages.
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The microscopic agglutination test (MAT) is the gold standard for sero-diagnosis of leptospirosis because of its unsurpassed diagnostic specificity. It uses panels of live leptospires, ideally recent isolates, representing the circulating serovars from the area where the patient became infected.
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An antigen is any substance that causes the immune system to produce antibodies — certain proteins — to fight it off. The ABO grouping system refers to the genetically-determined individual differences in the presence of two antigens (A and B), which stimulate the production of different antibodies.
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Agglutination means sperm adhering without other cells and debris. ... If cells, debris and immotile sperm are included, the clumping is most probably caused by aggregation. The agglutinates are caused by sperm antibodies and often contain a certain proportion motile sperm, while aggregates usually contain only dead sperm.
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Now, an agglutinogen is any antigen, or foreign cell, toxin, bacteria, or anything else that gets the immune system reacting, that makes your body generate agglutinins. Noticing the 'gen' in 'agglutinogen' can help you remember the difference. Agglutinins have multiple arms that can bind onto agglutinogens.
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the quantity of a substance required to react with or to correspond to a given amount of another substance. agglutination titer the highest dilution of a serum which causes clumping of microorganisms or other particulate antigens.
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Antigen-antibody interaction, or antigen-antibody reaction, is a specific chemical interaction between antibodies produced by B cells of the white blood cells and antigens during immune reaction. The antigens and antibodies combine by a process called agglutination.
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February 2017) In transfusion medicine, mixed-field agglutination refers to mixed reactions during cell typing where two distinct cell populations are present: agglutinated cells admixed with many unagglutinated cells. The presence of two or more cell populations is known as chimerism.
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A1 and A2 are distinguished by the reactivity of lectin i.e., anti-A1 which occurs as a cold agglutinin and exclusively agglutinates A1 cells. About 0.4% A2 and 25% of A2B subgroups possess anti-A1. These antibodies become clinically significant if they react at 37°C destroying A1 cells [2].