Abstract
Highly purified interferon-alpha (IFN-alpha) prepared from a human lymphoblastoid line (Namalwa) was analysed by gel filtration and polyacrylamide gel electrophoresis (PAGE). Gel filtration separated the IFN-alpha into two peaks (A and B). All the components of peak A were retained by a monoclonal antibody (NK2) column, but some of those from peak B were not retained. The IFN that was not bound was active on mouse cells and could be resolved into two major bands by PAGE. The bound fraction (about 75% of the interferon protein) was purified by means of the monoclonal antibody column, although complete purification of crude interferon was not achieved in one passage.
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