TABLE 1.

Activity of IBG against Staphylococcus aureus.

Organism	IBG MIC (μg/ml)	VAN MIC (μg/ml)
S. aureus ATCC 29213 (MSSA)	4	1
S. Aureus 29213 + 10% FBS	32	1
MRSA ATCC 43300	4	1
MRSA 43300 + 10% FBS	32	1
Clinical MSSA (50)	0.125–4	0.5–1
Clinical MRSA (55)	2–4	0.5–1

IBG, isopropoxy benzene guanidine; VAN, vancomycin; FBS, fetal bovine serum; -, undetected. MIC, Minimum inhibitory concentration; MSSA, methicillin-sensitive S. aureus; MRSA, methicillin-resistant S. aureus.