A comparison by gel diffusion of the Lancefield and Rantz extraction techniques used in grouping haemolytic streptococci.
D000942:Antigens, Bacterial; D006801:Humans; D005779:Immunodiffusion / Q000379:methods; D012703:Serotyping / Q000379:methods; D013291:Streptococcus / Q000302:isolation & purification*
D000942:Antigens, Bacterial