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Conservation of chromosomal organization flanking HP0333 in three H. pylori strains. (A) Map of 4.7-kb region from nadE (HP0329) through HP0335 in strain 26695. Arrowheads refer to PCR primers (Table 2); arrows reflect the direction of transcription. (B) Products of PCR using these primer pairs for strains 84-183 (lanes 1), HPK5 (lanes 2), and 26695 (lanes 3). Lanes 4 are no-DNA controls.
