FIG. 4.

Phylogenetic analysis of 16S rRNA, mvaS, and mecA genes. Strain names are preceded by the names of the bacterial species. The branch length indicates the distance, which is expressed as the number of substitutions per 100 bases. Numbers at the branching points represent the percent occurrence in 1,000 random bootstrap replications of neighbor-joining analyses. Values of less than 50% are not shown. The sizes of mvaS genes varied from 1,167 to 1,179 bp, except for the truncated mvaS gene (369 bp) present in SCCmec. The genes identified in SCCmec and obtained from the S. sciuri species group are colored red and blue, respectively.