ABL has the capability to produce highly pure native envelope and gag HIV-1 and SIV antigens. These native proteins are purified from the conditioned media of chronically infected Human T-cell lines using immunoaffinity chromatography. They are purified by reverse phase chromatography resulting in purities greater than 95%. In addition, we offer a biologically active recombinant HIV-1 Tat protein which is produced in E. coli and purified using heparin sepharose and reverse phase chromatography. Tat is greater than 95% pure and biologically active by an HIV-1 rescue assay.

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