title: Isoelectric point of cell-free K99 antigen exhibiting hemagglutinating properties.
abstract: The isoelectric point of the K99 antigen in partially purified preparations isolated from Escherichia coli B41 was 4.2. Electrofocused K99 antigen hemagglutinated guinea pig and sheep erythrocytes and gave a single precipitin line on diffusion against antisera to E. coli B41 and absorbed factor K99 antisera.
mesh_terms: D000373:Agglutinins; D000942:Antigens, Bacterial; D004926:Escherichia coli / Q000276:immunology*; D006388:Hemagglutinins; D007526:Isoelectric Point; D010957:Plasmids
chemical_list: D000373:Agglutinins; D000942:Antigens, Bacterial; D006388:Hemagglutinins