Fig. 1.
(a) Radial phylogenetic tree constructed with the ClonalFrame program, displaying the clonal relationship between the STs of the S. oralis/mitis population at seven loci. The dendrogram was constructed from the combination of six ClonalFrame runs (with a cut-off value of 0.5, as a majority rule consensus; scale is coalescent units). (b) NJ tree constructed in mega v4.0, using the MLST concatenated sequences, and showing the relationship between the STs. ST-75, ST-76 and ST-77 (circled in both trees) are the STs for the S. oralis, S. pseudopneumoniae and S. mitis type strains, respectively.