Mice, KnockoutPhenotypeDrug ResistanceDrug Resistance, MicrobialDrug Resistance, BacterialDrug Resistance, NeoplasmDrug Resistance, MultipleDisease ResistanceVascular ResistanceGene Knockout TechniquesDrug Resistance, ViralDrug Resistance, Multiple, BacterialAnti-Bacterial AgentsMicrobial Sensitivity TestsMutationMice, Inbred C57BLTetracycline ResistancePlant DiseasesPenicillin ResistanceMolecular Sequence DataDrug Resistance, FungalAirway ResistanceBacterial Proteinsbeta-Lactam ResistanceResistance TrainingImmunity, InnateR FactorsEscherichia coliSignal TransductionP-GlycoproteinDNA, BacterialGenotypeBase SequenceAmpicillin ResistanceChloramphenicol ResistancePlasmidsInsulinGenes, BacterialAmino Acid SequenceTetracyclineDisease Models, AnimalGene DeletionTime FactorsSequence Analysis, DNAConjugation, GeneticPolymerase Chain ReactionReverse Transcriptase Polymerase Chain ReactionCell Line, TumorMethicillin ResistanceApoptosisMultidrug Resistance-Associated ProteinsRNA, MessengerATP-Binding Cassette TransportersAntineoplastic AgentsCephalosporin Resistance