the comparative in vitro activity of ciprofloxacin , norfloxacin , aztreonam , cefotaxime , ceftazidime , mezlocillin , azlocillin , and tobramycin was evaluated against 188 isolates from bacteremic patients and 161 aminoglycoside-resistant gram-negative rods .
C0040341
tobramycin
C0002556
aminoglycoside