A new scheme for serotyping group-G streptococci.
Ten antisera, prepared against nine selected strains of group-G streptococci and a strain of group-A streptococci of M-type 12, were used to serotype 102 isolates of group-G streptococci by means of precipitation reactions between the sera and hot-acid extracts of the streptococci. Fifty-six (54.9%) of the streptococci could be typed; eight serotypes were identified, of which type VIII was the most common (18.6%). The M12 and the R28 antigens, previously recorded in group-G streptococci, were not detected. The type antigens were trypsin sensitive and resembled the M antigens of group-A streptococci.
Lawal
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Dosunmu-Ogunbi
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D000818:Animals; D000942:Antigens, Bacterial / Q000276:immunology*; D001428:Bacterial Vaccines; D006801:Humans; D007106:Immune Sera; D051379:Mice; D011233:Precipitin Tests; D012703:Serotyping / Q000379:methods; D013291:Streptococcus / Q000145:classification* / Q000276:immunology / Q000472:pathogenicity; D014357:Trypsin
D000942:Antigens, Bacterial; D001428:Bacterial Vaccines; D007106:Immune Sera; D014357:Trypsin