TABLE 3.

Susceptibility of selected Bacillus isolates to various antimicrobial agents^a

Strain	MIC (μg ml−1)
	AM	EM	CL	TC	GM	CI	LC
3	0.064	0.032	0.75	0.032	<0.016	0.032	125
37	0.023	0.047	1.5	0.064	0.047	0.023	31.25
56	0.25	>256	12	0.094	0.19	0.023	250b
197	0.023	0.032	6	0.094	0.064	0.047	7.8
200	0.023	0.064	2	3	0.094	0.047	62.5
210	0.023	0.064	1.5	0.064	0.064	0.032	31.25
259	0.19	>256	4	0.064	<0.016	0.38	2,500b

^aMICs for ampicillin (AM), erythromycin (EM), chloramphenicol (CL), tetracycline (TC), gentamicin (GM), and ciprofloxacin (CI) were determined by the E-test method, while the MIC for lincomycin (LC) was determined by the microdilution method on a 96-well microtiter plate. The experiment was repeated three times, and representative results are shown.

^bMIC values after induction by subinhibitory concentrations of erythromycin (0.4 μg ml⁻¹): 56, 2,500 μg ml⁻¹ and 259, > 5,000 μg ml⁻¹.