Efficient purification of mouse monoclonal antibodies from ascites fluid by medium-performance anion exchange chromatography.

Medium-performance anion-exchange chromatography was applied to the purification of murine IgG class monoclonal antibodies from ascites fluid. The separations were performed under mild conditions at pH 8 using relatively low sodium-chloride concentrations. Recoveries for monoclonal antibodies of subclasses IgG1, IgG2a, and IgG2b were about 90%. The IgG preparations were free of other ascites fluid proteins.