FIG. 1.

Phylogenetic analysis at the 16S DNA locus of our clinical isolate compared to other members of the Peptostreptococcaceae family, with Clostridium perfringens as the outgroup. The GenBank sequence accession numbers used for analysis are as follows: for Peptostreptococcus micros, U60326; for Helcococcus kunzii, X69837; for Helcococcus sp., Y1629; for “Helcococcus pyogenica,” AY559040; for Finefoldia magna, AY169413; for Sedimentibacter hongkongensis, AF43316; for Clostridium ultunense, Z69293; for Tisierella praeacuta, X80833; for Clostridium perfringens, AB075767; and for Fusobacterium nucleatum, AJ006964.