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About maxXpress

The maxXpress service combines Cobra’s cell line development team with Ubiquitous Chromatin Opening Elements (UCOEs) technology to provide a rapid solution to producing monoclonal antibodies and recombinant proteins from CHO-S cells. UCOE containing vectors have been shown to markedly enhance the expression of a wide variety of intracellular, secreted and membrane-bound proteins. Inclusion of a UCOE (4-8 kb in size) in a eukaryotic expression vector permits efficient expression in 
the vast majority of stable clones, whereas with conventional vectors only a minor proportion of transfectants demonstrate high-level expression. There is therefore no need for amplification and expression has been demonstrated to be stable over 130 generations. The combination of UCOE and CHO-S allows the generation of high yields of recombinant proteins.

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