Genes, HomeoboxIn Situ HybridizationMolecular Sequence DataHomeodomain ProteinsTranscription FactorsGene Expression Regulation, DevelopmentalAmino Acid SequenceBase SequenceHistocompatibility Antigens Class IOtx Transcription FactorsHistocompatibility Antigens Class IILIM-Homeodomain ProteinsAntennapedia Homeodomain ProteinMSX1 Transcription FactorSequence Homology, Amino AcidGoosecoid ProteinAvian ProteinsBody PatterningTrans-ActivatorsCloning, MolecularCell DifferentiationMutationRepressor ProteinsDNA-Binding ProteinsMorphogenesisDrosophila ProteinsEmbryo, NonmammalianGene ExpressionMultigene FamilyDrosophilaRNA, MessengerPhenotypeMesodermEye ProteinsGene Expression RegulationSequence AlignmentPromoter Regions, GeneticDNA, ComplementaryPhylogenyNerve Tissue ProteinsEndodermCell LineMeristemExtremitiesMice, TransgenicZebrafish ProteinsEctodermChordata, NonvertebrateChromosome MappingVertebratesMice, Inbred C57BLEmbryonic and Fetal DevelopmentProsencephalonNuclear ProteinsHeadDNAEmbryo, MammalianProtein BindingChick EmbryoEyeNervous SystemTranscription, GeneticBinding SitesReverse Transcriptase Polymerase Chain ReactionImmunoglobulin Class SwitchingConserved SequenceSequence Homology, Nucleic AcidMice, KnockoutGenes, InsectEvolution, MolecularSocial ClassCells, CulturedMice, Mutant StrainsSignal TransductionPlant ProteinsDNA PrimersCell LineagePolymerase Chain ReactionTelencephalonEmbryonic InductionSequence Analysis, DNABlotting, NorthernAllelesCentral Nervous SystemTransfectionImmunohistochemistryRecombinant Fusion ProteinsRhombencephalonAntigen PresentationStem CellsRetinaGene Expression ProfilingBiological EvolutionBone Morphogenetic ProteinsGenes, ReporterPOU Domain FactorsBone Morphogenetic Protein 4Caenorhabditis elegans ProteinsDown-RegulationProtein Structure, Tertiary