with repeated transfers in drug-free medium , a complete reversal to susceptibility to gentamicin , but not to other aminoglycosides , was obtained for strains that had previously been transferred in sub-mics of gentamicin , whereas strains that had been transferred in increasing concentrations of gentamicin did not revert to their original sensitivity to aminoglycosides despite repeated transfers in drug-free medium .
C0017436
gentamicin
C0002556
aminoglycosides