AmpicillinAmpicillin ResistanceSulbactamAnti-Bacterial AgentsMicrobial Sensitivity TestsPivampicillinPenicillinsPenicillin ResistanceEscherichia coliChloramphenicolDrug Resistance, MicrobialHaemophilus influenzaebeta-LactamasesProtein BiosynthesisPenicillin GGentamicinsPenicillinaseTrimethoprimKineticsR FactorsSulfamethoxazoleTetracyclineDrug Resistance, BacterialPenicillanic AcidEnterococcus faecalisCloxacillinCephalosporinsProtein Synthesis InhibitorsMolecular Sequence DataCephalexinDNA, BacterialStereoisomerismbeta-LactamsEnterococcus faeciumEnterobacteriaceaeDysentery, BacillaryRNA, MessengerAmoxicillinCulture MediaDrug Resistance, Multiple, BacterialMutationPlasmidsBacterial ProteinsTalampicillinCarbenicillinProbenecidMolecular StructureCephaloridineBase SequenceGram-Positive Bacterial InfectionsShigellaCells, CulturedKlebsiellaFecesTime FactorsConjugation, GeneticCycloheximideDNADNA ReplicationCyclizationProteusNitrofurantoinCell LineTrimethoprim-Sulfamethoxazole CombinationHaemophilus InfectionsShigella sonneiEnterococcusStreptomycinPenicillin VBacteriaSalmonellaNalidixic AcidTritiumCephalothinSalmonella InfectionsPenicillin-Binding ProteinsCefamandoleLeucineLactamsCeftriaxoneLiverMeningitisDrug SynergismTranscription, GeneticAnti-Infective AgentsAmino Acid SequenceCarbon IsotopesRNAMeningitis, HaemophilusKanamycinChloramphenicol ResistanceDrug Therapy, CombinationCefotaximeGenes, BacterialDactinomycinEnterobacterSalmonella typhiEscherichia coli InfectionsCephalosporinaseCefuroxime