LymphopeniaT-Lymphocytopenia, Idiopathic CD4-PositiveCarboprostLymphocyte CountPropylene GlycolsRats, Inbred BBLeukocytosisLeukocyte CountReceptors, LysosphingolipidInterleukin-7LymphocytesT-LymphocytesSevere Combined ImmunodeficiencySphingosineImmunologic Deficiency SyndromesCD4-Positive T-LymphocytesFood Coloring AgentsThymus GlandOpportunistic InfectionsLymphocyte SubsetsDacarbazineT-Lymphocyte SubsetsAntineoplastic Agents, AlkylatingBlood Cell CountLeukopeniaImmunosuppressive AgentsLymphopoiesisSpleenFlow CytometryHomeostasisLupus Erythematosus, SystemicNeutropeniaB-LymphocytesMice, Inbred C57BLT-Lymphocytes, RegulatoryAdoptive TransferCD8-Positive T-LymphocytesReceptors, Interleukin-7Lymphocyte ActivationAnti-Neutrophil Cytoplasmic Antibody-Associated VasculitisLymphocyte DepletionCell ProliferationImmunocompromised HostLupus Vasculitis, Central Nervous SystemMice, KnockoutAutoimmunityLymphoid TissueCD4-CD8 RatioRats, Inbred LewThymectomyBone MarrowAntibodies, Neoplasm