Citrobacter rodentiumCitrobacterEnterobacteriaceae InfectionsCitrobacter freundiiColonCitrobacter koseriColitisEnteropathogenic Escherichia coliColonic DiseasesMice, Inbred C57BLMice, Inbred C3HIntestinal MucosaRodent DiseasesEscherichia coli ProteinsHyperplasiaBacterial AdhesionVirulenceEscherichiaBacterial LoadAdhesins, BacterialImmunity, MucosalMice, KnockoutVirulence FactorsBacterial Proteins