CefamandoleProteusProteus vulgarisProteus mirabilisProteus InfectionsProteus penneriCephalosporinsMandelic AcidsCephalothinProteus SyndromeCefazolinCefoxitinEnterobacteriaceaeMicrobial Sensitivity TestsCephapirinCephalosporinaseAnti-Bacterial AgentsBacteriaCephaloridinePenicillin ResistanceAmpicillinCefonicidCefuroximeDrug Resistance, MicrobialCarbenicillinEnterobacterCephalexinCephamycinsMethicillinMoxalactamStaphylococcusCefoperazoneProvidenciaSpecies Specificitybeta-LactamasesPremedicationEscherichia coliCulture MediaHypoprothrombinemiasPenicillinsPenicillinaseTobramycinSequence Analysis, DNAAmoebaCefotaximeStaphylococcus aureusHalf-LifeBacterial InfectionsSarcinaCefaclorGram-Negative Aerobic BacteriaTicarcillinbeta-LactamsGenes, BacterialGentamicinsRNA, Ribosomal, 16SStaphylococcus epidermidisChloramphenicolDNA, BacterialBacterial Typing TechniquesLactamsKlebsiellaHaemophilus influenzaeKineticsDNA, RibosomalVirulenceUreaseMice, Inbred Strains