Table 1.
Strain | sef genotype* | IP LD50† | Oral LD50† |
---|---|---|---|
LK5 | sef+ | <10 | >104 |
TYT3230 | ΔsefA | <10 | >104 |
LK19 | sefA∷Kan | >104 | >107 |
TYT3150 | ΔsefD | >104 | >107 |
*Only the sef genotype is shown.
† To reduce the number of mice required, we only tested two mice for each dilution of S. enteritidis; therefore, all LD50 values are approximate.