The Conserved nhaAR Operon Is Drastically Divergent between B2 and Non-B2 Escherichia coli and Is Involved in Extra-Intestinal Virulence
Figure 5
Recombinant nhaA B2 strains have a lower virulence.
Lines represent the mean survival of OF1 mice after subcutaneous injection of 108 cells of the following strains: solid line: K-12 MG1655; dotted line: B2 strains lacking recombination in nhaA (i.e CFT073, 536, S88, RS218) and dashed line: strains showing evidence of recombination in nhaA region (i.e ED1a, E2348/65, SE15, B671, H001, TA103, TA435).