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Genomic organization of the tet(O)-harboring-region in C. coli 6461 and homologous regions in other Campylobacter genomes. Arrow orientations indicate putative directions of transcription. ORFs flanking the tet(O) cassette and conserved among the genomes are in black. C. coli-specific ORFs in the flanking regions are in gray. P2 to P8 are primers, which are also listed in Table 2.
