FIG. 1.

Neighbor-joining phylogram inferred from analysis of the combined pVGC sequence data. Strains are identified by their NRRL numbers and serotype designations. Lineages are demarcated with numbered brackets, and the L. monocytogenes type strain is marked with an asterisk. The tree was rooted with L. ivanovii (NRRL 33017 and NRRL 33021) and L. seeligeri (NRRL 33019) sequences (not shown). The frequency (percent) with which a given branch was recovered in 1,000 neighbor-joining bootstrap replications is shown above branches recovered in more than 70% of bootstrap replicates, with bootstrap values from maximum-parsimony analysis given in parentheses.