Stem CellsInfertilityInfertility, MaleInfertility, FemaleStem Cell TransplantationHematopoietic Stem CellsEmbryonic Stem CellsAdult Stem CellsPluripotent Stem CellsHematopoietic Stem Cell TransplantationStem Cell NicheNeural Stem CellsInduced Pluripotent Stem CellsCell DifferentiationMultipotent Stem CellsMesenchymal Stem Cell TransplantationMesenchymal Stromal CellsStem Cell FactorReproductive Techniques, AssistedCell LineagePregnancyStem Cell ResearchSpermatozoaFertilityPlant StemsFallopian Tube DiseasesFetal Stem CellsCells, CulturedCell ProliferationAzoospermiaHematopoietic Stem Cell MobilizationFertilization in VitroTestisSpermatogenesisNeoplastic Stem CellsSperm CountBone Marrow CellsOligospermiaSperm MotilityEndometriosisRegenerationMice, Inbred C57BLHysterosalpingographyOctamer Transcription Factor-3VaricoceleCell Culture TechniquesSemenSpermatogoniaCell SeparationEmbryo, MammalianReproductive TechniquesSemen AnalysisRegenerative MedicineGenitalia, FemaleTransplantation, AutologousPregnancy RateHematopoiesisFlow CytometryPeripheral Blood Stem Cell TransplantationGerm CellsTotipotent Stem CellsAntigens, CD34Time FactorsTransplantation, HomologousOvarySignal TransductionPhenotypeClomipheneGene Expression Regulation, DevelopmentalAnovulationSOXB1 Transcription FactorsSperm Injections, IntracytoplasmicReverse Transcriptase Polymerase Chain ReactionAsthenozoospermiaColony-Forming Units AssayOvulation InductionBiological MarkersChromosomes, Human, YReproductive MedicineGene Expression ProfilingImmunohistochemistryReproductionSex CharacteristicsMice, SCIDModels, BiologicalCell- and Tissue-Based TherapyTissue EngineeringCell LineEmbryo ResearchMice, TransgenicProto-Oncogene Proteins c-kitFertility Agents, FemaleGene Expression RegulationHomeodomain ProteinsCord Blood Stem Cell TransplantationMice, KnockoutNestinInsemination, ArtificialCell SurvivalTreatment Outcome