HomeostasisMice, Inbred C57BLMice, KnockoutInterleukin-7Receptors, Interleukin-7Signal TransductionMice, TransgenicLymphopeniaCell ProliferationCD4-Positive T-LymphocytesB-Cell Activating FactorCell DifferentiationApoptosisLymphocyte ActivationLymphocyte CountCD8-Positive T-LymphocytesThymus GlandT-Lymphocyte SubsetsT-LymphocytesImmunologic MemoryB-Lymphocyte SubsetsCells, CulturedReceptors, Antigen, T-CellT-Lymphocytes, RegulatoryB-Cell Activation Factor ReceptorTumor Necrosis Factor Ligand Superfamily Member 13B-LymphocytesForkhead Transcription FactorsCell SurvivalStem CellsInterleukin-15Gene Expression RegulationFlow CytometryInterleukin-7 Receptor alpha SubunitAdoptive TransferCD4-CD8 RatioInterleukin Receptor Common gamma SubunitMeristemAutophagyMembrane ProteinsModels, BiologicalLymphoid TissueB-Cell Maturation AntigenIntestinesCell LineageSpleenAutoimmunityGene DeletionInterleukin-15 Receptor alpha SubunitCell DivisionApoptosis Regulatory ProteinsLymphopoiesisMice, Inbred BALB CReverse Transcriptase Polymerase Chain ReactionMice, CongenicMice, Mutant StrainsReceptors, Interleukin-15Antigens, CDModels, ImmunologicalImmunophenotypingDown-RegulationReceptors, Interleukin-2Plant ShootsPhenotypeStem Cell NicheAgingDendritic CellsIntestinal MucosaMutationCell LineCytokinesAntigens, CD95STAT5 Transcription FactorEpithelial CellsCell DeathInterleukin-2RNA, MessengerMolecular Sequence DataInflammationAntigens, DifferentiationDNA-Binding ProteinsCarrier ProteinsPlasma CellsLymphocytic ChoriomeningitisFeedback, PhysiologicalTranscription FactorsInterferon-gammaKiller Cells, NaturalHematopoietic Stem CellsBlotting, WesternFas Ligand ProteinRNA InterferenceReceptors, Antigen, T-Cell, alpha-betaArabidopsis ProteinsMembrane GlycoproteinsCTLA-4 AntigenOxidative StressProto-Oncogene Proteins c-bcl-2Gene ExpressionUp-Regulation