FIG. 2.

Phylogenetic unrooted tree showing relationships among the sodA_int fragments from various staphylococcal type strains. The tree was established from an analysis of the sequences listed in Table 1 by using the neighbor-joining method. The sodA_int sequence of M. caseolyticus type strains included in this work was used as an outgroup sequence to root the tree. The value on each branch is the estimated confidence limit (expressed as a percentage) for the position of the branch as determined by bootstrap analysis. Only the bootstrap values superior to 95% were considered significant (4). The scale bar (neighbor-joining distance) represents 10% differences in nucleotide sequences. The accession numbers of sodA and sodM were AF121672 and Z49245, respectively.