title: Serogrouping single colonies of beta-hemolytic streptococci with achromopeptidase extraction.
abstract: Achromopeptidase (TBL-1; Wako Chemicals, USA, Inc., Dallas, Tex.) prepared as a 2,000-U/ml solution will extract the serogroup antigens from single colonies of groups A, B, C, F, and G streptococci in 1 min at room temperature. This enzyme extraction is not effective for the serogrouping of all group D streptococcus species. Achromopeptidase extracts can be used with latex or coagglutination reagents.
authors.forename: M
authors.initials: M
authors.lastname: Slifkin
authors.forename: R
authors.initials: R
authors.lastname: Cumbie
mesh_terms: D000372:Agglutination Tests; D000942:Antigens, Bacterial / Q000032:analysis* / Q000302:isolation & purification; D001433:Bacteriolysis; D010450:Endopeptidases; D012697:Serine Endopeptidases; D012703:Serotyping; D013291:Streptococcus / Q000145:classification* / Q000276:immunology
chemical_list: D000942:Antigens, Bacterial; D010450:Endopeptidases; D012697:Serine Endopeptidases; C036813:lysyl endopeptidase