title: Purification of the i-antigen 51A from Paramecium tetraurelia by immunoaffinity chromatography.
mesh_terms: D000818:Animals; D000954:Antigens, Surface / Q000302:isolation & purification*; D002846:Chromatography, Affinity / Q000379:methods; D002852:Chromatography, Ion Exchange; D004591:Electrophoresis, Polyacrylamide Gel; D007525:Isoelectric Focusing; D010247:Paramecium / Q000276:immunology*
chemical_list: D000954:Antigens, Surface