netilmicin , a new semisynthetic aminoglycoside derived by ethylation of the 1-n position of the deoxystreptamine ring of sisomicin , was tested in vitro with 4,070 strains of gram-negative bacilli isolated at the ucla medical center during 1975 to 1976 , using the agar dilution technique and an inoculum of approximately 10 ( 4 ) organisms .
C0027780
netilmicin
C0037209
sisomicin