what does mean agglutination titer?
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[ti´ter] 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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passive agglutination. A test for the presence of a specific antibody in which inert particles or cells with no foreign antigenic markers are coated with a known soluble antigen and mixed with serum. If clumping occurs, the patient's blood contains antibodies specific to the antigen.
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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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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. This occurs in biology in two main examples: The clumping of cells such as bacteria or red blood cells in the presence of an antibody or complement.
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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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The ASO titer test measures antibodies produced by your body in response to a toxin known as streptolysin O. Streptolysin O is a toxin produced by group A Streptococcus (GAS) bacteria. Your body makes the antistreptolysin O antibodies when you have a strep infection caused by GAS bacteria.
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Agglutination reactions can be used to type blood cells for transfusion, to identify bacterial cultures, and to detect the presence and relative amount of specific antibody in a patient's serum. Agglutination has been commonly used to determine whether a patient had or has a bacterial infection.
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In blood typing, antigens on the surfaces of red blood cells (RBCs) are also known as agglutinogens and the antibodies that react against them are also called agglutinins.
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Agglutination tests detect antibody or antigen and involve agglutination of bacteria, red cells, or antigen- or antibody-coated latex particles. They rely on the bivalent nature of antibodies, which can cross-link particulate antigens. ... IgM causes agglutination more effectively than IgG.
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Agglutination is the clumping of particles. ... When people are given blood transfusions of the wrong blood group, the antibodies react with the incorrectly transfused blood group and as a result, the erythrocytes clump up and stick together causing them to agglutinate.
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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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Agglutination Tests. Agglutination tests detect antibody or antigen and involve agglutination of bacteria, red cells, or antigen- or antibody-coated latex particles.
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Mycoplasma Infections Cold agglutinin responses are nonspecific and consist mostly of immunoglobulin M (IgM). They occur in association with half the cases of M. pneumoniae infection. A 4-fold rise in antibody or a titer greater than 1:64 suggests a recent M.
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Column agglutination technology (CAT) is a new. system for blood grouping and the detection of unex- pected antibodies based on the sieving effect of glass. bead microparticles. Glass beads are placed in a.
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Titer Questions: This test determines if you have immunity to a specific disease. 16. How long will it take to get my titer results? Most titer results come back to the clinic within 3-4 days.
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the clumping together in suspension of antigen-bearing cells, microorganisms, or particles in the presence of specific antibodies (agglutinins).
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Agglutination or aggregation involves the cross-linking of pathogens by antibodies to create large aggregates (Figure 18.1. ... 6: Neutralization involves the binding of specific antibodies to antigens found on bacteria, viruses, and toxins, preventing them from attaching to target cells.