CefamandoleMandelic AcidsCephalosporinsCephalothinCefazolinCefoxitinCephapirinCephalosporinaseMicrobial Sensitivity TestsCefonicidEnterobacteriaceaeCefuroximeCephaloridinePenicillin ResistanceAmpicillinCarbenicillinCephamycinsBacteriaMoxalactamCephalexinMethicillinPremedicationCefoperazoneHypoprothrombinemiasAnti-Bacterial AgentsTobramycinEnterobacterHalf-LifeStaphylococcusDrug Resistance, MicrobialProteusDrug IndustrySarcinaCefotaximePenicillinaseEconomic CompetitionTicarcillinCefaclor