Figure 2. Phylogenetic placement of sequence 3CB1-4, which was derived from a 3-CB–degrading sediment microcosm. The neighbor joining tree is based on 16S rRNA sequence positions 357–907 (E. coli numbering). The solid bracket shows the sequences targeted by S-G-Syn-0424-a-A-18, and the scale bar represents the estimated number of base changes per nucleotide. Bold type indicates the sequence was obtained in this study.