LymphopeniaT-Lymphocytopenia, Idiopathic CD4-PositiveToxicity TestsCarboprostLymphocyte CountPropylene GlycolsRats, Inbred BBToxicity Tests, AcuteLeukocyte CountLeukocytosisLymphocytesReceptors, LysosphingolipidT-LymphocytesInterleukin-7Severe Combined ImmunodeficiencyLeukopeniaDose-Response Relationship, DrugSphingosineAntineoplastic Agents, AlkylatingDacarbazineFood Coloring AgentsAntineoplastic Combined Chemotherapy ProtocolsAntineoplastic AgentsImmunologic Deficiency SyndromesNeutropeniaDrug Administration ScheduleThymus GlandCD4-Positive T-LymphocytesOpportunistic InfectionsBlood Cell CountTreatment OutcomeLymphocyte SubsetsImmunosuppressive AgentsT-Lymphocyte SubsetsMice, Inbred C57BLSpleenTime FactorsFlow CytometryMaximum Tolerated DoseLethal Dose 50HomeostasisLymphopoiesisNeoplasmsCombined Modality TherapyHematologic DiseasesCell ProliferationLupus Erythematosus, SystemicB-LymphocytesToxicity Tests, ChronicBone MarrowAntibodies, MonoclonalInfusions, IntravenousCD8-Positive T-LymphocytesT-Lymphocytes, RegulatoryAdoptive TransferMice, KnockoutLymphocyte ActivationCyclophosphamideCell SurvivalLymphocyte DepletionReceptors, Interleukin-7ApoptosisAnti-Neutrophil Cytoplasmic Antibody-Associated VasculitisImmunocompromised HostRetrospective StudiesAntibodies, Monoclonal, HumanizedMice, TransgenicLymphoid TissueAutoimmunityLupus Vasculitis, Central Nervous SystemAntibodies, NeoplasmRats, Inbred LewThrombocytopeniaCD4-CD8 RatioFeverSurvival AnalysisCells, CulturedDisease Models, AnimalDisease-Free SurvivalSurvival RateThymectomyBlood CellsImmunotherapy