prior to aminoglycoside therapy , 77 % of strains were susceptible to less than or equal to 8 micrograms/ml of tobramycin , but only 35 % and 28 % were susceptible to tobramycin after initiation of tobramycin/ticarcillin and netilmicin/ticarcillin therapy , respectively .
C0002556
aminoglycoside
C0027780
netilmicin