Bacterial InfectionsHost-Pathogen InteractionsSendai virusImmunity, InnateHelicobacter pyloriHelicobacter InfectionsRespiratory Tract InfectionsMice, Inbred C57BLVirus ReplicationCytokinesDisease Models, AnimalCytomegalovirus InfectionsCell LineCells, CulturedMice, Inbred BALB CLungGram-Negative Bacterial InfectionsInflammationMice, KnockoutTime FactorsReverse Transcriptase Polymerase Chain ReactionListeriosisAntiviral AgentsMolecular Sequence DataAnti-Bacterial AgentsCytomegalovirusHIV InfectionsApoptosisInfant, NewbornPolymerase Chain ReactionRNA, MessengerGram-Positive Bacterial InfectionsCalcitoninSignal TransductionDNA, ViralCD4-Positive T-LymphocytesGene Expression RegulationRNA, ViralAntigens, ViralAntibodies, ViralFeverT-LymphocytesNeutrophilsListeria monocytogenesBacteriaVirus DiseasesSepsisStaphylococcus aureusHIV-1BrainPneumonia, BacterialLipopolysaccharidesEscherichia coli InfectionsBacterial Infections and MycosesPseudomonas InfectionsStaphylococcal InfectionsPseudomonas aeruginosaPhagocytosisSkin Diseases, BacterialAntimicrobial Cationic PeptidesGram-Positive BacteriaCitrobacter rodentiumGram-Negative BacteriaStreptococcal InfectionsBacteremiaAnti-Infective AgentsOpportunistic InfectionsToll-Like Receptor 2MacrophagesKlebsiella InfectionsBacterial LoadToll-Like Receptor 4InfectionLeukocyte CountFever of Unknown OriginProtein PrecursorsPeritonitisToll-Like ReceptorsDisease SusceptibilityEnterobacteriaceae InfectionsEyelashesConjunctivitis, BacterialStreptococcus pneumoniaeNeutropeniaHaemophilus InfectionsEscherichia coliPneumoniaUrinary Tract InfectionsColony Count, MicrobialMycosesPneumococcal InfectionsSalmonella Infections, AnimalProspective StudiesKlebsiella pneumoniaeTumor Necrosis Factor-alphaSalmonella InfectionsInterleukin-8Eye Infections, BacterialImmunologic Deficiency SyndromesDrug Resistance, Bacterial