TolC Promotes ExPEC Biofilm Formation and Curli Production in Response to Medium Osmolarity

Table 3

Antimicrobial susceptibility of the experimental strains.

	MIC (μg mL^−1)
Strain	AMI	GEN	ERY	STR	AMP	FLO	NOR	CHL	TET	CIP	SDS
WT	16	>512	128	512	>512	128	512	64	256	256	≥1024
tolC	4	512	4	512	>512	4	64	≤1	64	8	32
Cm-tolC	16	>512	128	>512	>512	64	512	N.D.	256	256	≥1024

AMI: amikacin; GEN: gentamycin; ERY: erythromycin; STR: streptomycin; AMP: ampicillin; FLO: florfenicol; NOR: norfloxacin; CHL: chloramphenicol; TET: tetracycline; CIP: ciprofloxacin; SDS: sodium dodecyl sulfonate.
N.D.: not determined because the Cm-tolC strain has plasmid pHSG-tolC with the gene resistant to chloramphenicol.