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Chromosomal context of Sdf I. Schematic representation of the Sdf I region from Salmonella serovar Enteritidis CAHFS-285 (phage type 4). Open boxes indicate sequence with identity to S. enterica serovar Typhi. Gray and black boxes indicate novel sequences. Sdf I, bounded by Sau3AI sites, is shown in black. All ORFs of more than 100 codons are indicated with black arrows.
