Table 2. Bacterial strains used in this study.

Bacterial strain	Serotype/ID	Source	Reference
EHEC NIPH-11060424 a	O103:H25	EHEC	[90]
EHEC 12009	O103:H2	EHEC	[50]
B. thetaiotaomicron		CCUG 10774 b	[91]
B. fragilis		Isolated from horse	This study
C. perfringens		DSM756	[92]
DH5α E. coli		Laboratory strain	[89]

^aSynonym with NVH-734

^bAlso designated VPI-5482