Multiple Birth OffspringOocyte DonationReproductive Techniques, AssistedOvumOvuleBirth RateEmbryo, MammalianBlastocystBlastomeresUrochordataAlstroemeriaCleavage Stage, OvumGerm Cells, PlantFertilizationEmbryonic DevelopmentPregnancyEmbryo, NonmammalianZygoteMorulaEmbryonic and Fetal DevelopmentClone CellsTissue DonorsSeedsEmbryo ImplantationChick EmbryoPollen TubeFertilization in VitroOocytesEndospermStarfishRosaPollenEgg YolkBlood DonorsPhloroglucinolFetal ViabilityFlowersLiving DonorsEmbryo TransferGene Expression Regulation, DevelopmentalCulture TechniquesEmbryo Culture TechniquesCryopreservationMolecular Sequence DataArabidopsisZona PellucidaFallopian TubesEgg ProteinsBase SequenceGene Expression Regulation, PlantEgg ShellArabidopsis ProteinsAlpha-AmanitinNuclear Transfer TechniquesCulture MediaZea maysEgg WhiteMice, Inbred ICRCloning, OrganismParthenogenesisRNA, MessengerPlant ProteinsEthylene GlycolCloning, MolecularGenes, PlantSpermatozoaMice, Inbred StrainsTotipotent Stem CellsEmbryo LossCryoprotective AgentsAmino Acid SequenceCattleCarbonic AcidSperm Injections, IntracytoplasmicMorphogenesisSperm-Ovum InteractionsMicroinjectionsTime FactorsReproductionSuperovulationIn Situ HybridizationMice, Inbred CBAEmbryonic InductionChimeraParasite Egg CountCell NucleusMesodermCytochalasinsMice, Inbred C57BLAmanitinsFreezingMetaphaseTranscription, GeneticXenopus laevisCell DifferentiationMesocricetusEmbryo DispositionCell DivisionCell MembranePotassium