Neural TubeNeurulationNeural CrestNervous SystemEctodermChick EmbryoNeural Tube DefectsCentral Nervous SystemNotochordGene Expression Regulation, DevelopmentalAnencephalyIn Situ HybridizationMorphogenesisEmbryo, NonmammalianEmbryo, MammalianBody PatterningQuailMesodermSpinal DysraphismRhombencephalonSkullXenopus ProteinsEmbryonic InductionGastrulaAmbystoma mexicanumPollen TubeEmbryonic and Fetal DevelopmentHomeodomain ProteinsMicroscopy, Electron, ScanningMesencephalonTranscription FactorsAmbystomaFolic AcidCell MovementGallic AcidCell DifferentiationGenes, HomeoboxXenopus laevisXenopusMolecular Sequence DataSpina Bifida OccultaCoturnixCulture TechniquesHeadSomitesHedgehog ProteinsPregnancyFallopian TubesSignal TransductionPaired Box Transcription FactorsAmino Acid SequenceTime FactorsMicroscopy, ElectronEpitheliumEncephalocelePapaverineMeningomyeloceleCadherinsEustachian TubeImmunohistochemistrySpina Bifida CysticaChest TubesReceptor, Platelet-Derived Growth Factor alphaBrainEmbryonic DevelopmentVitamin B ComplexZebrafish ProteinsSpinal CordAvian ProteinsZebrafishPreconception CareColchicineTissue TransplantationNeural PlateNerve Tissue ProteinsCranial NervesBone Morphogenetic ProteinsMutationDiazepamCell FusionNocodazoleBase SequencePrenatal DiagnosisMice, Mutant StrainsWnt3 ProteinDNA-Binding ProteinsCongenital AbnormalitiesMembrane FusionProteinsFood, FortifiedWnt ProteinsRNA, MessengerChimeraTailFolic Acid DeficiencyTrans-ActivatorsWnt1 ProteinCell PolarityFallopian Tube NeoplasmsPhenotype