CefamandoleMandelic AcidsCephalosporinsCephalothinCefazolinCefoxitinMicrobial Sensitivity TestsCephapirinAnti-Bacterial AgentsEnterobacteriaceaeCephalosporinasePenicillin ResistanceCefuroximeCefonicidDrug Resistance, MicrobialCephaloridineAmpicillinBacteriaMethicillinCarbenicillinCephamycinsMoxalactamCephalexinPremedicationCefoperazoneStaphylococcusTobramycinHypoprothrombinemiasbeta-LactamasesEnterobacterStaphylococcus aureusProteusSequence Analysis, DNAHalf-LifeCefotaximeBacterial Typing TechniquesSpecies SpecificitySarcinaPenicillinsPenicillinaseDNA, BacterialCulture MediaStaphylococcus epidermidisVancomycinTicarcillinCefaclorStaphylococcal InfectionsGentamicinsbeta-LactamsMolecular Sequence DataEscherichia coliBacterial InfectionsOxacillinLactamsHaemophilus influenzaeDrug Resistance, Bacterial