. 2005 Dec;187(23):7901–7911. doi: 10.1128/JB.187.23.7901-7911.2005

TABLE 4.

Virulence properties in BALB/c mice of serovar Typhimurium dam mutants cured of prophages or with a defect in excision

Strain 1^a	Strain 2^a	Competition index^b
Strain 1^a	Strain 2^a	Liver	Spleen
dam	Wild type	0.0012 ± 0.001	0.0009 ± 0.0002
dam Δ[Gifsy-1, Gifsy-2, SopEΦ, ST64B]	dam	0.059 ± 0.013	0.027 ± 0.0003
dam Δ[Gifsy-1, Gifsy-2, SopEΦ, ST64B] sodC1⁺gtgE⁺	dam	0.97 ± 0.15	1.09 ± 0.54
dam [ST64B Δxis]	dam	1.79 ± 0.48	1.17 ± 0.46

All these strains are isogenic to wild-type strain SL1344 (see Table 1 for details).

Values were calculated upon intraperitoneal challenge of three BALB/C mice per mixed infection. Organ homogenates were prepared at 48 to 72 hours postinfection.