susceptibility testing of 96 clinical group ive isolates to 19 antimicrobial agents by agar dilution revealed that , at drug levels achievable in serum , the isolates were susceptible only to aminoglycosides , cephalosporins , and colistin , whereas at drug concentrations attainable in urine , they were susceptible to erythromycin , tetracycline , and nitrofurantoin as well .
C1136254
antimicrobial
C0014806
erythromycin