DNA Base Sequence Homologies among Strains of Streptococcus sanguis

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DNA base sequence homologies among strains of Streptococcus sanguis.

DNA was isolated from 19 strains and substrains of Streptococcus sanguis and analysed for guanine plus cytosine (GC) contents and base sequence homologies. Three groups could be discerned: group 1 strains had 40-8 to 42-8 mol % GC; group 2, 42-7 to 44-0 mol % GC; group 3, 43-8 to 46-4 mol % GC. DNA homologies between groups 1 and 3 were 40 to 60% at 67 degrees C and 40% at 72 degrees C. The hom...

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ژورنال

عنوان ژورنال: Journal of General Microbiology

سال: 1975

ISSN: 0022-1287

DOI: 10.1099/00221287-91-1-92