Germ CellsCloning, OrganismNuclear Transfer TechniquesPluripotent Stem CellsEmbryo, MammalianStem CellsEmbryonic Stem CellsClone CellsOctamer Transcription Factor-3Cell DifferentiationCloning, MolecularCell LineageTestisGenomic ImprintingNeoplasms, Germ Cell and EmbryonalGene Expression Regulation, DevelopmentalGerm LayersBlastocystStem Cell TransplantationTeratomaEmbryo ResearchEmbryo ImplantationInduced Pluripotent Stem CellsHematopoietic Stem CellsBlastomeresEmbryonic DevelopmentAdult Stem CellsCell Culture TechniquesEmbryo, NonmammalianGonadsMolecular Sequence DataSpermatogenesisBase SequencePregnancyStage-Specific Embryonic AntigensEmbryoid BodiesFertilization in VitroEmbryonic and Fetal DevelopmentChick EmbryoCells, CulturedAmino Acid SequenceHematopoietic Stem Cell TransplantationStem Cell NicheCell LineTesticular NeoplasmsKaryotypingChimeraNeural Stem CellsSpermatogoniaEmbryo Culture TechniquesPersonhoodCryopreservationBeginning of Human LifeParthenogenesisMultipotent Stem CellsSpermatozoaMesodermStem Cell FactorEmbryo DispositionTranscription FactorsMesenchymal Stem Cell TransplantationOvaryGerminomaRNA, MessengerMesenchymal Stromal CellsBiological MarkersSertoli CellsGene Expression ProfilingSeminiferous TubulesEndodermEmbryo TransferTotipotent Stem CellsOocytesZygoteDNA, ComplementarySpermatocytesSequence Homology, Amino AcidMice, TransgenicImmunohistochemistrySpermatidsGene ExpressionIn Situ HybridizationCulture TechniquesMice, SCIDTime FactorsMosaicismSeminomaPregnancy RatePhenotypeCell ProliferationAlkaline PhosphataseStem Cell ResearchMutationMorulaMice, Inbred C57BLPreimplantation DiagnosisValue of LifeHomeodomain ProteinsLifeFetus