they were resistant to amino- , carboxy- and ureidopenicillins , aminoglycosides ( except gentamicin ) , chloramphenicol , sulphonamides , tetracyclines and , most importantly , to cephalosporins ( except cefoxitin and latamoxef ) and to aztreonam .
C0002556
aminoglycosides
C0017436
gentamicin