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Thirty-four strains of Streptococcus mutans whose antigenic or genetic positions were unclear or unknown with respect to the serological scheme of Bratthall (1970) and Perch et al. (1974), or the genetic (deoxyribonucleic acid base sequence homology) scheme of Coykendall were analyzed to clarify their relationship to previously well-characterized strains. Strain OMZ175 of the "new" serotype f was genetically homologous with strains of S. mutans subsp. mutans. Strains of the "new" serotype g were homologous with serotype d strains (S. mutans subsp. sobrinus). Strains isolated from wild rats constituted a new genetic group but carried the c antigen. Thus, strains within a "genospecies" (subspecies) of S. mutans may not always carry a unique or characteristic antigen. We suggest that the existence of multiple serotypes within subspecies represents antigenic variation and adaptations to hosts.
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A L Coykendall, and
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January 1970,
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A L Coykendall, and
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January 1972,
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A L Coykendall, and
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January 1972,
Odontologisk revy,
A L Coykendall, and
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R A Dvarskas
January 1984,
Acta veterinaria Hungarica,
A L Coykendall, and
D Bratthall, and
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January 1974,
Caries research,
A L Coykendall, and
D Bratthall, and
K O'Connor, and
R A Dvarskas
April 1976,
Journal of dental research,
A L Coykendall, and
D Bratthall, and
K O'Connor, and
R A Dvarskas
October 1974,
Journal of bacteriology,
A L Coykendall, and
D Bratthall, and
K O'Connor, and
R A Dvarskas
June 1981,
Infection and immunity,
