TABLE 1.

Organisms and susceptibilities

E. faecalis strainGentamicin MIC (μg/ml)Value for mutant of JH2-2
GeometricArithmeticGentamicin concn for selectiona (μg/ml)Frequency of mutation
JH2-26440
1477-G112880801.7 × 10−5-2.6 × 10−6
1573-G22562001602 × 10−8-7 × 10−8
1688-G35124004003.3 × 10−8-1 × 10−9
  • a Selection on BHI agar.