Germ CellsStem CellsNeoplasms, Germ Cell and EmbryonalStem Cell TransplantationEmbryonic Stem CellsHematopoietic Stem CellsAdult Stem CellsTestisPluripotent Stem CellsSpermatogenesisCell DifferentiationHematopoietic Stem Cell TransplantationStem Cell NicheTesticular NeoplasmsInduced Pluripotent Stem CellsSpermatogoniaNeural Stem CellsMultipotent Stem CellsStem Cell FactorMesenchymal Stem Cell TransplantationSpermatozoaGerminomaSeminiferous TubulesSertoli CellsMesenchymal Stromal CellsCell LineageSpermatocytesGonadsSpermatidsSeminomaGene Expression Regulation, DevelopmentalOctamer Transcription Factor-3Stem Cell ResearchCells, CulturedCell ProliferationTeratomaPlant StemsFetal Stem CellsGerm LayersMeiosisEmbryo, MammalianHematopoietic Stem Cell MobilizationOvaryOogenesisNeoplastic Stem CellsWheat Germ AgglutininsMice, Inbred C57BLCell Culture TechniquesTotipotent Stem CellsBone Marrow CellsImmunohistochemistrySeminiferous EpitheliumCell SeparationRegenerationGametogenesisDysgerminomaProto-Oncogene Proteins c-kitSignal TransductionReverse Transcriptase Polymerase Chain ReactionOogoniaFlow CytometryRNA, MessengerEndodermal Sinus TumorTransplantation, AutologousRegenerative MedicineMice, TransgenicSOXB1 Transcription FactorsPeripheral Blood Stem Cell TransplantationHematopoiesisGene Expression ProfilingTranscription FactorsMolecular Sequence DataAntigens, CD34PhenotypeSex DifferentiationTransplantation, HomologousNuclear Receptor Subfamily 6, Group A, Member 1Cell MovementHomeodomain ProteinsCell LineModels, BiologicalGreen Fluorescent ProteinsApoptosisInfertility, MaleBase SequenceGene Expression RegulationColony-Forming Units AssayCryptorchidismCell SurvivalTooth GermGene ExpressionRNA-Binding ProteinsChimeraCell CountCell DivisionBiological MarkersCarcinoma, EmbryonalTime FactorsIn Situ HybridizationCell Transplantation