these results suggest that ( a ) high-level resistance to streptomycin and kanamycin among some clinical isolates of enterococci is associated with a 45 megadalton plasmid , and ( b ) the same plasmid is also responsible for the resistance to penicillin-aminoglycoside synergism observed in these strains .
C0022487
kanamycin
C0002556
aminoglycoside