the mics of azithromycin , erythromycin and roxithromycin were determined ( by an agar dilution method ) for 65 strains of gram-negative bacteria responsible for endocarditis and gastrointestinal infections , for 20 strains of non-fermenting gram-negative bacteria and for 16 strains of anaerobic bacteria .
C0052796
azithromycin
C0014806
erythromycin