TABLE 1.

Antimicrobial activity observed by disk diffusion assay^a

Antibiotic	Diam of zone of inhibition (mm)
	Control	1 mM A	2 mM A	1 mM B	2 mM B	1 mM N	2 mM N
Erythromycin	24	26	26.5	27.5	29	29.5	33
Gentamicin	18.5	21	23	25	27	25.5	35
Vancomycin	18	18	20	19	21	22	25

^aThe effects of increasing sesquiterpenoid concentrations on the susceptibility of S. aureus to erythromycin (15 μg), gentamicin (10 μg), or vancomycin (30 μg) were assayed. Abbreviations: A, apritone; B, bisabolol; N, nerolidol.