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A tetramer assay (also known as a tetramer stain) is a procedure that uses tetrameric proteins to detect and quantify T cells that are specific for a given antigen within a blood sample. [1] The tetramers used in the assay are made up of four major histocompatibility complex (MHC) molecules, which are found on the surface of most cells in the ...
This ability gives rise to several clinical applications. MHC multimers allow for ex vivo selection and proliferation of T-cells specific to viral or tumor-related antigens, which can then be reintroduced to augment the immune system. MHC multimers can also be used to eliminate graft-originating T-cells on transplant organs, ex vivo.
Hemoglobin A (HbA), also known as adult hemoglobin, hemoglobin A1 or α 2 β 2, is the most common human hemoglobin tetramer, accounting for over 97% of the total red blood cell hemoglobin. [1] Hemoglobin is an oxygen-binding protein, found in erythrocytes , which transports oxygen from the lungs to the tissues. [ 2 ]
Vivo Software was a pioneer internet streaming media company which was acquired by RealNetworks in March 1998. Vivo Software designed the Vivo Video/Audio platform, including its encoding tools and end-user VivoActive Player. The Vivo format, obsolete today, was one of the first to be designed and used for internet streaming.
"VCR"-format cassettes in case (left) and on own (right). A full-size CD is shown for scale. Size comparison between a Betamax cassette (top) and a VHS cassette (bottom) The videotape format war was a period of competition or "format war" of incompatible models of consumer-level analog video videocassette and video cassette recorders (VCR) in the late 1970s and the 1980s, mainly involving the ...
VP6, Sorenson Spark, Screen video, Screen video 2, H.264: MP3, ADPCM, Nellymoser, Speex, AAC: Use of the H.264 and AAC compression formats in the FLV file format has some limitations and authors of Flash Player strongly encourage everyone to embrace the new standard F4V file format [2] de facto standard for web-based streaming video (over RTMP ...
Tryptophan synthase or tryptophan synthetase is an enzyme (EC 4.2.1.20) that catalyzes the final two steps in the biosynthesis of tryptophan. [1] [2] It is commonly found in Eubacteria, [3] Archaebacteria, [4] Protista, [5] Fungi, [6] and Plantae. [7] However, it is absent from Animalia. [8] It is typically found as an α2β2 tetramer.
A tetramer (/ ˈ t ɛ t r ə m ər /) (tetra-, "four" + -mer, "parts") is an oligomer formed from four monomers or subunits. The associated property is called tetramery . An example from inorganic chemistry is titanium methoxide with the empirical formula Ti(OCH 3 ) 4 , which is tetrameric in solid state and has the molecular formula Ti 4 (OCH ...