at usual therapeutic doses , penicillin ( pen ) , ampicillin ( amp ) , cyclacillin ( cyc ) , cephalothin ( ct ) , cefazolin ( cz ) , cephradine ( cpd ) , cefamandole ( cmd ) , cefaclor ( ccl ) , cefuroxime ( crx ) , spectinomycin ( spt ) , tetracycline ( tet ) , ethambutol ( emb ) and isoniazid ( inh ) were ineffective against b .
C0030842
penicillin
C0010523
cyclacillin