CarbenicillinCefamandoleCefuroximePenicillin ResistanceExtrachromosomal InheritancePseudomonas aeruginosaCephalosporinsCephalothinTicarcillinMandelic AcidsDrug Resistance, MicrobialMicrobial Sensitivity TestsPenicillinsAnti-Bacterial AgentsGentamicinsCefazolinDrug ResistanceAmpicillinDrug Resistance, BacterialCefoxitinEnterobacteriaceaeCephalosporinaseTobramycinBacteriaDrug Resistance, NeoplasmCephaloridinePenicillinaseProteusbeta-Lactamsbeta-LactamasesKanamycinDrug Resistance, MultiplePenicillin GDisease ResistanceCephalexinDrug Resistance, Multiple, BacterialVascular ResistanceAmikacinDrug Resistance, ViralAminoglycosidesCephamycinsMoxalactamCephapirinKlebsiellaEnterobacterCefonicidLactamsCefaclorCefotaximeMezlocillinBacterial InfectionsSerratiaR FactorsHalf-LifeStaphylococcusDrug SynergismEscherichia coliSisomicinCefoperazoneSerratia marcescensPiperacillinPremedicationIndenesCeftizoximePseudomonas InfectionsPseudomonasMutationBacteroides fragilisHaemophilus influenzaeTetracycline ResistanceTetracyclineMethicillinCulture MediaStaphylococcus aureus