the mutation frequencies of pseudomonas aeruginosa , staphylococcus aureus , escherichia coli , salmonella sp. , and haemophilus influenzae to enoxacin , norfloxacin , nalidixic acid , tobramycin , cephalexin , cefotaxime , ampicillin , azlocillin , oxacillin , and ticarcillin were determined by plating large numbers of organisms onto antibiotic-containing agar .
C0002680
ampicillin
C0004499
azlocillin