Cloning, OrganismBioethicsEmbryo ResearchTwinning, MonozygoticGenetic DeterminismReproductive Techniques, AssistedCloning, MolecularStem CellsNuclear Transfer TechniquesEmbryo, MammalianEmbryonic Stem CellsMolecular Sequence DataBase SequenceAmino Acid SequenceBlastocystStem Cell TransplantationEmbryo ImplantationHematopoietic Stem CellsPluripotent Stem CellsBlastomeresEmbryonic DevelopmentAdult Stem CellsEmbryo, NonmammalianCell DifferentiationDNA, ComplementarySequence Homology, Amino AcidInduced Pluripotent Stem CellsFertilization in VitroChick EmbryoEmbryonic and Fetal DevelopmentHematopoietic Stem Cell TransplantationStem Cell NicheNeural Stem CellsPregnancyPersonhoodEmbryo Culture TechniquesGene Expression Regulation, DevelopmentalBeginning of Human LifeCryopreservationCell LineageMultipotent Stem CellsRNA, MessengerEmbryo DispositionMesenchymal Stem Cell TransplantationCell LineMesenchymal Stromal CellsCells, Cultured