in vitro activity against aztreonam was compared with amikacin , ampicillin , carbenicillin , cephalosporin , cefoxitin , chloramphenicol , gentamicin , nitrofurantoin , piperacillin , tetracycline , sulfamethoxazole-trimethoprim and tobramycin .
C3536856
cephalosporin
C0007557
cefoxitin