Abstract

A preparative free-flow isotachophoretic method for the purification of monoclonal antibodies from mouse ascites fluid and tissue culture media is described. This high-resolution method allows the direct separation of monoclonal antibodies from antibody-containing tissue culture media or ascites fluid and gives a better separation from the major contaminant protein fractions and a higher recovery of the monoclonal antibodies than anion-exchange chromatography. The purification can run continuously and without any time-consuming regeneration procedures; the monoclonal antibody is obtained under mild conditions in a small electrolyte volume.

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