homologous genes encoding resistance to gentamicin , tobramycin , and kanamycin through the bifunctional acetylating [ aac ( 6 ' ) ] and phosphorylating [ aph ( 2 '' '' ) ] aminoglycoside-modifying enzyme were identified in staphylococci isolated from patients in the united states .
C0040341
tobramycin
C0002556
aminoglycosid