Cephalosporin ResistanceCefotaximeCephalosporinsMicrobial Sensitivity Testsbeta-LactamasesAnti-Bacterial AgentsCefuroximeEnterobacteriaceae Infectionsbeta-Lactam ResistanceDrug Resistance, BacterialPenicillin-Binding ProteinsDrug Resistance, MicrobialAcremoniumGram-Positive Bacterial InfectionsEscherichia coliEnterococcus faecalisCeftriaxoneDNA, BacterialBacterial ProteinsPlasmidsCephalosporinaseCeftizoximeCeftazidimeMoxalactamCephamycinsCefmenoximeDrug ResistanceEnterobacteriaceaePenicillin ResistanceCefoperazonePenicillinsBacteriaCephalexinCephalothinbeta-LactamsDrug Resistance, Multiple, BacterialCephaloridineEnterobacterCefazolinBacterial InfectionsGram-Negative BacteriaDrug Resistance, NeoplasmStreptococcus pneumoniaePenicillin AmidaseDrug Resistance, MultipleCefamandoleCefotiamCefoxitinCefaclorMuramoylpentapeptide CarboxypeptidaseAmpicillinAztreonamKlebsiella pneumoniaeCefiximeGram-Positive BacteriaDisease ResistancePeptidyl TransferasesHexosyltransferasesLactamsVascular ResistancePenicillinasePenicillin GDrug StabilityImipenemDrug Resistance, ViralKlebsiella InfectionsKlebsiellaPseudomonas aeruginosaCiprofloxacinPiperacillinPenicillanic AcidStaphylococcus aureusCefonicidMutationThienamycinsMolecular Sequence DataAmpicillin ResistanceFleroxacinAnti-Infective AgentsClavulanic AcidClavulanic AcidsCephapirinNeisseria gonorrhoeaeCephradine