MorphogenesisGene Expression Regulation, DevelopmentalMesodermBody PatterningCell DifferentiationEmbryo, NonmammalianSignal TransductionIn Situ HybridizationMutationEpitheliumDrosophila ProteinsCell PolarityCell LineageDrosophilaOrganogenesisEpithelial CellsPhenotypeUreterMolecular Sequence DataZebrafish ProteinsModels, BiologicalZebrafishChick EmbryoAnimals, Genetically ModifiedHomeodomain ProteinsCell ShapeCell MovementOrgan Culture TechniquesEctodermOdontogenesisTranscription FactorsAmino Acid SequenceFibroblast Growth Factor 10Embryo, MammalianCaenorhabditis elegansBone Morphogenetic ProteinsHyphaeToothMice, TransgenicMembrane ProteinsCaenorhabditis elegans ProteinsMammary Glands, AnimalHedgehog ProteinsStem CellsWnt ProteinsEmbryonic DevelopmentVulvaEpidermisFibroblast Growth FactorsHair FollicleCell DivisionEmbryonic and Fetal DevelopmentExtremitiesEndodermImmunohistochemistryCadherinsDrosophila melanogasterBase SequenceMice, KnockoutEmbryonic InductionBranchial RegionActinsCells, CulturedMicroscopy, ElectronNeural CrestEyeCell ProliferationWingNerve Tissue ProteinsDNA-Binding ProteinsTooth GermExtracellular MatrixLarvaGenes, InsectCell AdhesionCell LineFeathersBone Morphogenetic Protein 4Ear, InnerGenes, HomeoboxRNA, MessengerSequence Homology, Amino AcidMicroscopy, Electron, ScanningGreen Fluorescent ProteinsNervous SystemSubmandibular GlandCytoskeletonNotochordTrans-ActivatorsFungal ProteinsTime FactorsHeartGastrulationXenopus ProteinsLamininMice, Mutant StrainsGastrulaMicroscopy, FluorescenceDNA PrimersT-Box Domain Proteins