TABLE 1.
Bacterial strains employed in the study
| Species | Serotype or strain | Sourcea | Property |
|---|---|---|---|
| L. monocytogenes | 1/2a | CDC | Wild type, 1 of 3 strains commonly causing listeriosis |
| 1/2b | TT 1707 | Wild type | |
| 1/2c | CDC | Wild type | |
| 3a | IMVS 0224 | Wild type | |
| 3b | IMVS 0270 | Wild type | |
| 3c | IMVS 1830 | Wild type | |
| 4a | TT 1706 | Wild type | |
| 4b | CDC | Wild type | |
| 4c | ATCC 19116 | Wild type | |
| 4d | ATCC 19117 | Wild type | |
| 4e | ATCC 19118 | Wild type | |
| EGD | K. Iretonb | Wild type | |
| EGD | K. Ireton | Mutant strain lacking inlA | |
| EGD | K. Ireton | Mutant strain lacking inlB | |
| EGD | K. Ireton | Mutant strain lacking inlAB | |
| L. innocua | 4 | IMVS 1871 | Wild type |
| 6a | ATCC 33090 | Wild type, representative serotype | |
| L. ivanovii | 5 | IMVS 1918 | Wild type |
| IMVS 1171 | Wild type | ||
| ATCC 19119 | Wild type | ||
| TECRA food isolate | Wild type | ||
| Bacillus cereus | NDc | TECRA food isolate | Wild type |
| Escherichia coli | ER2738 | NEB | K-12; F′ proA+B+lacIq Δ(lacZ)M15 zzf::Tn10(Tetr) fhuA2 glnV Δ(lac-proAB) thi-1 Δ(hsdS-mcrB)5 |
a
CDC, Centers for Disease Control and Prevention, Atlanta, Ga.; TT, Toxin Technology, Sarasota, Fla.; IMVS, Institute for Microbiological and Veterinary Sciences, Adelaide, Australia; NEB, New England Biolabs, Beverly, Mass.; TECRA, TECRA International, French's Forest, Australia.
b
University of Toronto, Canada (all strains were from reference 30).
c
ND, not determined.