pa-96 accumulated [ 3h ] tobramycin in a normal triphasic manner , whereas the aminoglycoside-resistant variants were unable to take up measurable quantities of [ 3h ] tobramycin even when long incubation times ( 120 min ) and high external aminoglycoside concentrations ( 27 micrograms/ml ) were used .
C0040341
tobramycin
C0002556
aminoglycoside