. 2001 Oct;183(20):6065–6073. doi: 10.1128/JB.183.20.6065-6073.2001

TABLE 2.

RecA dependence for viability tested by P1 transduction of recA::Tn10 into intR1 strains

Host strain	Relative transduction frequency
MG1655	1.0^a
MG::71CW-L	0.16^a
MG::71CC-L	0^a ^c
MG::71CW-L tus::Kan^r	0.30^a
MG::71CC-L tus::Kan^r	0.38^a
EC1005	0.63^b
EC::CW-L	0.61^b
EC::CC-L	0^b ^c
EC1005 tus::Kan^r	0.80^b
EC::71CW-L tus::Kan^r	0.63^b
EC::71CC-L tus::Kan^r	0.60^b

Relative to the number of transductants obtained with the wild-type parent, MG1655.

Ratio between the number of recA::Tn10 transductants and the number of met⁺ transductants.

Tiny colonies emerged on selective plates after 3 to 4 days of incubation, but none were temperature sensitive. Temperature sensitivity is a characteristic feature of the intR171_CW and intR171_CC strains.