Preimplantation DiagnosisPregnancyEmbryo, MammalianEmbryo ImplantationEmbryo, NonmammalianBlastocystChick EmbryoEmbryonic DevelopmentBlastomeresEmbryo ResearchFertilization in VitroEmbryonic and Fetal DevelopmentEmbryo DispositionCryopreservationPersonhoodBeginning of Human LifeGene Expression Regulation, DevelopmentalZygoteEmbryo LossPregnancy RateMorulaEmbryo Culture TechniquesEmbryo TransferCulture TechniquesEctogenesisCleavage Stage, OvumSingle Embryo TransferOocytesSperm Injections, IntracytoplasmicCloning, OrganismLifeMosaicismEmbryologyValue of LifeAnatomy, ArtisticTheologyIncubatorsFetal ViabilityIn Situ HybridizationZebrafishMesodermResearch Embryo CreationMorphogenesisPrenatal InjuriesEthylene GlycolGestational AgeFetal ResearchGastrulaVitrificationCryoprotective AgentsReproductive TechniquesBody PatterningYolk SacMolecular Sequence DataPregnancy OutcomeFertilizationAneuploidyTrophoblastsTime FactorsMoralsCulture MediaHuman CharacteristicsGerm LayersZona PellucidaHomeodomain ProteinsRNA, MessengerNotochordCell DifferentiationNuclear Transfer TechniquesGamete Intrafallopian TransferEctodermBase SequenceTranscription FactorsZebrafish ProteinsFetusEmbryonic Stem CellsTotipotent Stem CellsFallopian TubesEndometriumPropylene GlycolCatholicismCell NucleusXenopus ProteinsChromosome AberrationsNontherapeutic Human ExperimentationMutationThiepinsImmunohistochemistryAmino Acid SequenceSeedsPhenotypeEndodermCell LineEastern OrthodoxyParthenogenesisCell LineageInfertility, FemaleDrosophilaEmbryonic InductionBlastoderm