[Filament and cellulose acetate columns for affinity chromatography]

Single-use filament columns for affinity chromatography are described. Antigenic filaments for the isolation of pure antibodies have proved to be much more effective than antibody filaments for the isolation of antigens. Nitrocellulose filter has been employed for the preparation of paper columns that may be used for the isolation of pure antibodies 8-10 times.