TABLE 1.

Bacterial strains used in this study

Bacterial strain and plasmid	Relevant features	Source or reference
B. pertussis Tohama I	Wild type	29
B. pertussis TI Δtox	As Tohama I but Δptx	48
B. pertussis BP347	As Tohama I but bvgS::Tn5	61
B. pertussis W28	Wild type	33
B. pertussis 18323	Wild type and type strain	47
B. bronchiseptica BB7865	Wild type but Strr	55
B. bronchiseptica BB7866	As BB7865 but ΔbvgS	55
B. bronchiseptica Rem1	Wild type	22
B. bronchiseptica MUCOB4	Wild type	38
Serovar Typhimurium LT2		64
E. coli DH5α		GIBCO