Genes, HomeoboxMorphogenesisHomeodomain ProteinsLegislation, PharmacyNotochordPrimitive StreakLymph NodesGene Expression Regulation, DevelopmentalTranscription FactorsIn Situ HybridizationMolecular Sequence DataBody PatterningAmino Acid SequenceBase SequenceLIM-Homeodomain ProteinsMesodermOtx Transcription FactorsMSX1 Transcription FactorEmbryo, NonmammalianGoosecoid ProteinAvian ProteinsDrosophila ProteinsDrosophilaCell DifferentiationSequence Homology, Amino AcidAntennapedia Homeodomain ProteinMutationZebrafish ProteinsExtremitiesPhenotypeLymph Node ExcisionTrans-ActivatorsEctodermEmbryonic and Fetal DevelopmentGene ExpressionEndodermDNA-Binding ProteinsRepressor ProteinsChick EmbryoCloning, MolecularZebrafishXenopus ProteinsEye ProteinsRNA, MessengerHeadEmbryo, MammalianSignal TransductionSentinel Lymph Node BiopsyGastrulaNerve Tissue ProteinsMultigene FamilyDNA, ComplementarySinoatrial NodeEpitheliumEmbryonic InductionEyeNervous SystemVertebratesGenes, InsectMice, TransgenicBranchial RegionChordata, NonvertebrateImmunohistochemistrySequence AlignmentMeristemAnimals, Genetically ModifiedMice, Mutant StrainsDNA PrimersBone Morphogenetic ProteinsOrganogenesisProsencephalonMice, KnockoutOdontogenesisPaired Box Transcription FactorsCaenorhabditis elegans ProteinsCell LineageBone Morphogenetic Protein 4Lymphatic MetastasisPhylogenyGene Expression RegulationCaenorhabditis elegansChromosome MappingCell MovementAtrioventricular NodeTranscription, GeneticToothRhombencephalonEpithelial CellsReverse Transcriptase Polymerase Chain ReactionPromoter Regions, GeneticModels, BiologicalNuclear ProteinsHedgehog ProteinsCentral Nervous SystemTelencephalonStem CellsMice, Inbred C57BLDrosophila melanogasterBlotting, NorthernCell Line