Table 1.

List of Salmonella strains used for study.

Serial no.	Name of straina	Mutation
1	SL1344	None (wild type)
2	ΔphoP	Mutation in PhoP/Q two-component sensor of the host intracellular environment
3	ΔssrB	Mutation in SsrB regulator of SPI2-proteins
4	ΔflhD	Mutation in flagellar transcription regulator
5	ΔsipB	Mutation in SPI1 translocator protein SipB
6	ΔpurA	Mutation in adenylosuccinate synthetase (purine metabolism)

^aAll strains were provided by Dirk Bumann (University of Basel). All mutant strains are in SL1344 background.