Chick EmbryoEmbryo, MammalianEmbryo, NonmammalianEmbryo ImplantationChickensGene Expression Regulation, DevelopmentalEmbryonic DevelopmentBlastocystAllantoisMesodermMorphogenesisQuailIn Situ HybridizationCulture TechniquesGastrulaEmbryonic and Fetal DevelopmentEctodermAvian ProteinsChorionChorioallantoic MembraneEmbryo LossCartilageEmbryonic InductionBlastodermCleavage Stage, OvumBody PatterningSomitesCoturnixFertilization in VitroNotochordNeural CrestBlastomeresPregnancyNervous SystemCell DifferentiationHomeodomain ProteinsLathyrismRhombencephalonTime FactorsExtraembryonic MembranesEndodermMolecular Sequence DataZebrafishRNA, MessengerChimeraEmbryo DispositionMicroscopy, ElectronZygoteMorulaHeartTranscription FactorsLimb BudsNeural TubeMusclesExtremitiesCells, CulturedMicroscopy, Electron, ScanningCryopreservationWingFibroblast Growth Factor 8Yolk SacFibroblast Growth FactorsZebrafish ProteinsBase SequenceBursa of FabriciusElectroporationOrganizers, EmbryonicDicarbethoxydihydrocollidineAmino Acid SequenceBone Morphogenetic ProteinsOocytesAvian Sarcoma VirusesTissue TransplantationMesonephrosHedgehog ProteinsCell MovementSpinal CordXenopus ProteinsImmunohistochemistryEmbryo Research5-Aminolevulinate SynthetaseSingle Embryo TransferCentral Nervous SystemAminopropionitrileAllylisopropylacetamideCloning, OrganismCollagenBranchial RegionEgg ShellEctogenesisSignal TransductionCulture MediaOrgan Culture TechniquesRetinaFibroblastsNuclear Transfer TechniquesGenes, HomeoboxCell DivisionMicroinjectionsMotor Neurons