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. 1983 Sep;41(3):1386-8.
doi: 10.1128/iai.41.3.1386-1388.1983.

Prevalence of transformable Streptococcus mutans in human dental plaque

G Westergren, C G Emilson

Prevalence of transformable Streptococcus mutans in human dental plaque

G Westergren et al. Infect Immun. 1983 Sep.

Abstract

A total of 100 strains of Streptococcus mutans serotypes c/e/f and d/g, freshly isolated from dental plaque, were screened for their ability to undergo genetic transformation to streptomycin resistance. Of the serotype c/e/f strains, 28% were found to be transformable, whereas none of the serotype d/g strains could be transformed by donor DNA from streptomycin-resistant S. mutans strains of either serotype c or d/g. Two of the transformable serotype c/e/f strains were transformed by DNAs from a variety of oral streptococcal species commonly found in the microflora.

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