MorphogenesisCell DifferentiationGene Expression Regulation, DevelopmentalSignal TransductionCells, CulturedTranscription FactorsStem CellsMesodermMolecular Sequence DataCell LineIn Situ HybridizationCell DivisionHomeodomain ProteinsPhenotypeCell LineageCell ProliferationRNA, MessengerSex DifferentiationMutationEmbryonic Stem CellsEpitheliumEpithelial CellsGene Expression RegulationBase SequenceDNA-Binding ProteinsImmunohistochemistryEmbryo, NonmammalianMice, TransgenicMice, KnockoutTretinoinBody PatterningEmbryo, MammalianModels, BiologicalMice, Inbred C57BLReverse Transcriptase Polymerase Chain ReactionZebrafishBone Morphogenetic ProteinsAmino Acid SequenceEpidermisGene ExpressionDrosophila ProteinsChick EmbryoOrganogenesisTrans-ActivatorsCell PolarityCell MovementCell ShapeMembrane ProteinsOsteogenesisZebrafish ProteinsOrgan Culture TechniquesNeuronsDrosophilaAntigens, DifferentiationTime FactorsTranscription, GeneticCell Culture TechniquesOsteoblastsEndodermNerve Tissue ProteinsUreterKeratinocytesDNA PrimersMesenchymal Stromal CellsRepressor ProteinsWnt ProteinsBasic Helix-Loop-Helix Transcription FactorsHedgehog ProteinsGene Expression ProfilingMuscle DevelopmentBlotting, WesternNuclear ProteinsTransfectionAdipogenesisMammary Glands, AnimalApoptosisReceptors, NotchPromoter Regions, GeneticActinsCell AdhesionEmbryonic and Fetal DevelopmentAnimals, Genetically ModifiedBone Morphogenetic Protein 4Cell CycleFibroblast Growth FactorsFibroblast Growth Factor 10Transforming Growth Factor betaExtracellular MatrixEctodermMicroscopy, ElectronCadherinsDown-RegulationEmbryonic DevelopmentMyoblastsHair FollicleTumor Cells, CulturedFluorescent Antibody TechniqueOdontogenesisMice, Mutant StrainsBone Morphogenetic Protein 2