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Locus and composition of DNA-based probes used for dot hybridization. The three probes were designed on the basis of the sequence of a 1,653-bp fragment from strains of S. sanguinis. The sequence of probe SSA-1 comprised a portion of the first ORF (uncC gene) and the entire intergenic region, the sequence of probe SSA-2 comprised only the intergenic region, and the sequence of probe SSA-3 comprised an internal region of the second ORF (murA gene).
