a clinical isolate of escherichia coli , strain cb-134 , recovered in 1986 from an abdominal abscess , exhibited resistance to penams , oxyimino-beta-lactams including broad-spectrum cephalosporins ( cefotaxime , ceftriaxone , ceftazidime ) , and aztreonam but remained susceptible to cephamycins ( cefoxitin , cefotetan ) and to moxalactam and imipenem .
C3536856
cephalosporins
C0007557
cefoxitin