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Comparison of the rpoS-mutS intergenic regions of E. coli K-12 (laboratory) (4), E. coli CFT073 (pyelonephritis) (this study), and E. coli O157:H7 (hemorrhagic colitis) (21). E. coli CFT073 lacks the 6.1-kb DNA deletion in the rpoS-mutS intergenic region that is characteristic of enterohemorrhagic strains (e.g., O157:H7). However the presence of the full 6.1-kb rpoS-mutS intergenic sequence found in E. coli MG1655 has not been verified for E. coli CFT073.
