Neural TubeNeurulationAnencephalyNeural CrestSpinal DysraphismChick EmbryoNervous SystemNotochordCentral Nervous SystemPollen TubeGene Expression Regulation, DevelopmentalBody PatterningNeural Tube DefectsFolic AcidQuailIn Situ HybridizationSpina Bifida OccultaCoturnixRhombencephalonSomitesHedgehog ProteinsMorphogenesisEctodermEmbryonic InductionFallopian TubesPregnancyEmbryo, MammalianMesodermPaired Box Transcription FactorsEncephaloceleMeningomyeloceleEustachian TubeHomeodomain ProteinsSpina Bifida CysticaChest TubesEmbryonic and Fetal DevelopmentEmbryo, NonmammalianTranscription FactorsVitamin B ComplexZebrafish ProteinsSpinal CordEmbryonic DevelopmentAvian ProteinsPreconception CareTissue TransplantationNeural PlateCell DifferentiationZebrafishCranial NervesBone Morphogenetic ProteinsMesencephalonCell MovementNerve Tissue ProteinsMolecular Sequence DataPrenatal DiagnosisWnt3 ProteinXenopus ProteinsGastrulaCongenital AbnormalitiesSignal TransductionMice, Mutant StrainsFood, FortifiedWnt ProteinsTailFolic Acid DeficiencyWnt1 ProteinCulture TechniquesFallopian Tube NeoplasmsNeuroepithelial CellsTeratogensCell PolarityIntubation, GastrointestinalChimeraDNA-Binding ProteinsTrans-ActivatorsGenes, HomeoboxMutationAmino Acid SequenceProteinsAbortion, Therapeuticalpha-FetoproteinsTime FactorsInfant, NewbornProsencephalonNeuronsFetal DeathStem CellsLIM-Homeodomain ProteinsImmunohistochemistryBase SequencePhenotypeFetal Tissue TransplantationXenopus laevisSkullMice, TransgenicPrenatal CareUrochordataVertebratesBone Morphogenetic Protein 4Xenopus