CephaloridineCephalosporinsCephalothinCephalosporinasebeta-LactamasesPenicillinaseCephalexinAnti-Bacterial AgentsMicrobial Sensitivity TestsCefazolinbeta-LactamsPenicillin GPenicillinsCephalosporin ResistanceCefotaximeCloxacillinDrug Resistance, MicrobialPenicillin ResistanceAmpicillinEnterobacterEnterobacteriaceaeBacteriaCefoxitinMandelic AcidsKlebsiellaProteusCefiximeCeftriaxoneProteus vulgarisBromobenzenesCitrobacterCefmenoximeAnion Exchange ResinsIsoelectric FocusingEscherichia colibeta-Lactam ResistanceImipenemCefotiamCeftazidimeStaphylococcusCeftizoximeMethicillinCephradineHydrolysisL-Iditol 2-DehydrogenaseKlebsiella pneumoniaeAztreonamLincomycinCarbenicillinEnterobacteriaceae InfectionsGram-Negative BacteriaChemistryCefamandoleChemical PhenomenaMuramoylpentapeptide CarboxypeptidaseProbenecidCephamycins