. 2017 Jan 4;22(1):71. doi: 10.3390/molecules22010071

Table 3.

Fractional inhibitory concentration (FIC) values of tested compounds in combination with metronidazole against clinical strains of H. pylori (11, 12) and control strain by standard checkerboard titration method with two-fold serial agar dilutions.

Compounds	FIC Values (Index) (MIC Combination)			FIC Mean
	Strain Number
	11	12	Control Strain
3a-MTZ	0.328 (*)	0.328 (*)	0.328 (*)	0.328 (*)
3a-MTZ	(2.5)	(2.5)	(2.5)	0.328 (*)
3b-MTZ	1.312 (=)	1.312 (=)	1.312 (=)	1.312 (=)
3b-MTZ	(10)	(10)	(10)	1.312 (=)
3c-MTZ	0.656 (+)	0.656 (+)	0.656 (+)	0.656 (+)
3c-MTZ	(5)	(5)	(5)	0.656 (+)
3d-MTZ	0.328 (*)	0.328 (*)	0.328 (*)	0.328 (*)
3d-MTZ	(2.5)	(2.5)	(2.5)	0.328 (*)
3e-MTZ	1.312 (=)	0.656 (+)	0.656 (+)	0.874 (+)
3e-MTZ	(10)	(5)	(5)	0.874 (+)

(*): Synergism; (+): Additive; (=): Indifferent.