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The species and serotypes of various strains of S. mutans and S. sobrinus were characterized by pulsed-field gel electrophoresis after the genomic DNA from the various strains had been digested with five restriction enzymes (EcoR I, Xba I, Hind III, Sfi I and BssH II) separately. Among these restriction enzymes, BssH II was very useful for the characterization of species and serotypes and, in particular,...
Restriction profiles of chromosomal DNA were studied in different Acidithiobacillusferrooxidans strains grown on medium with Fe2+ and further adapted to another oxidation substrate (S0, FeS2, or sulfide ore concentrates). The restriction endonuclease XbaI digested the chromosomal DNA from different strains into different numbers of fragments of various sizes. Adaptation of two strains (TFBk and TFN-d)...
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