title: Counterimmunoelectrophoresis for Lancefield-grouping of streptococci.
mesh_terms: D000942:Antigens, Bacterial; D003378:Counterimmunoelectrophoresis; D007122:Immunoelectrophoresis; D011233:Precipitin Tests / Q000379:methods; D013291:Streptococcus / Q000145:classification* / Q000276:immunology
chemical_list: D000942:Antigens, Bacterial