Chick EmbryoChickensEmbryo, MammalianEmbryo, NonmammalianEmbryo ImplantationGene Expression Regulation, DevelopmentalAvian ProteinsEmbryonic DevelopmentBlastocystAllantoisPoultry DiseasesQuailMesodermIn Situ HybridizationCulture TechniquesMorphogenesisBursa of FabriciusEmbryonic and Fetal DevelopmentEctodermGastrulaChorioallantoic MembraneMolecular Sequence DataChorionCoturnixCartilageBlastodermEmbryo LossEmbryonic InductionBase SequenceSomitesBody PatterningCleavage Stage, OvumAmino Acid SequenceNeural CrestNotochordFertilization in VitroRNA, MessengerCell DifferentiationBlastomeresTime FactorsPregnancyChicken anemia virusNervous SystemMusclesHomeodomain ProteinsCells, CulturedMicroscopy, ElectronRhombencephalonAvian Sarcoma VirusesLathyrismChimeraExtraembryonic MembranesEndodermZebrafishTranscription FactorsHeartLimb BudsExtremitiesZygoteEmbryo DispositionAvian leukosis virusMorulaNeural TubeDNAMicroscopy, Electron, ScanningFibroblastsElectroporationAvian LeukosisCloning, MolecularYolk SacFeathersWingOviductsFibroblast Growth FactorsCryopreservationFibroblast Growth Factor 8ImmunohistochemistryZebrafish ProteinsSpecies SpecificityCloacaBone Morphogenetic ProteinsOocytesDicarbethoxydihydrocollidineEgg ShellLiverDNA, ComplementaryOrganizers, EmbryonicTissue TransplantationFluorescent Antibody TechniqueRetinaMolecular WeightCollagenSpinal CordHedgehog ProteinsCell MovementSequence Homology, Amino AcidNewcastle disease virusXenopus Proteins5-Aminolevulinate SynthetaseGene Expression