. 2018 Apr 3;2018:3438453. doi: 10.1155/2018/3438453

Table 3.

MICs and FICI of CRE and ampicillin when used either alone or in combination against S. aureus strains.

Strains		MIC		FIC^∗∗	FICI^∗∗∗
Strains	AMP (g/ml)	CRE (mg/ml)	NIS (g/ml)	AMP+ CRE (g/ml + mg/ml)
S. aureus DMST 20651	64^R	0.5^ND	16	1.0 + 0.125	0.27^SI
S. aureus DMST 20652	64^R	0.5^ND	16	1.0 + 0.125	0.27^SI
S. aureus DMST 20653	64^R	0.5^ND	16	1.0 + 0.125	0.27^SI
^∗ S. aureus ATCC 29213	0.25^S	0.25^ND	0.5	NT	NT

^∗ S. aureus ATCC 29213 was used as a reference strain; FIC^∗∗ was the lowest FIC value; FICI^∗∗∗ was the lowest FICI value. ^SSusceptible; ^Rresistant; ^SIsynergistic interaction. ^NDNo data in CLSI; NT = no test; AMP = ampicillin; CRE = Cyperus rotundus extract; NIS = nisin.