Table 1.

Bacteria used in this study

Bacterial strain	Description	Source
E. coli JW0013	ΔdnaK734::kan, Δ(araD-araB)567, ΔlacZ4787(::rrnB-3),λ-, rph-1, Δ(rhaD-rhaB)568, hsdR514	Keio Collection, GenoBase
E. coli O157:H7 472	Common pathogenic species	University of Minnesota
E. coli MC1061 F’	Plasmid-free, recA+, non-amber suppressor strain	Lucigen
E. coli J2210	Common pathogenic species	University of Minnesota
E. coli JJ2487	Common pathogenic species	Minneapolis VA hospital
Salmonella enterica serovar Enteritidis MH91989	Common pathogenic species	University of Minnesota
Salmonella enterica serovar Typhimurium ATCC SL1344	Common pathogenic species	University of Minnesota