title: Grouping of beta-haemolytic streptococci from primary plates by micronitrous acid-coagglutination method.
mesh_terms: D000372:Agglutination Tests; D001431:Bacteriological Techniques; D009573:Nitrites; D009608:Nitrous Acid; D013291:Streptococcus / Q000145:classification*
chemical_list: D009573:Nitrites; D009608:Nitrous Acid