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Phylogenetic tree for Campylobacter spp. based on a fragment of the rpoB gene. The sequences of PCR-amplified fragments of rpoB genes from several campylobacters were compared using neighbor-joining analysis. The chinchilla isolate is closest to the type strain of C. lanienae but has only 86.9% sequence identity. This is a greater separation than seen for subspecies pairs of C. fetus, C. hyointestinalis, and C. jejuni.
