TABLE 3.

Characteristics of strains used in growth competition assays.

Strain	Susceptibility groupa	MICCIP (mg/L)	Target mutations	PMQR genes	Gene location
M36	S (−)	0.008	ParC T57S	–	ND
M39	RS (c +)	0.06	ParC T57S	oqxAB,	chromosome
HB137	RS (−)	0.25	GyrA D87Y	–	ND
SP79	I (p +)	1	GyrA D87N	oqxAB, aac(6′)-Ib-cr	plasmid
SP80	I (p +)	1	GyrA D87N	oqxAB, aac(6′)-Ib-cr	plasmid
F64	R (c +)	4	ParC T57S	oqxAB, aac(6′)-Ib-cr and qnrS	chromosome
K46	HR (p +)	32	GyrA, S83F/D87G ParC, T57S/S80R	aac(6′)-Ib-cr	plasmid
CL108	HR(c +)	32	GyrA, S83F/D87G ParC, T57S/S80R	oqxAB, aac(6′)-Ib-cr and qnrS	chromosome

^a−, lacking PMQR; +, PMQR present; p, plasmid location; c, chromosomal location; ND, not detected.