Cell DifferentiationMesodermCell SurvivalSurvival RateGene Expression Regulation, DevelopmentalMorphogenesisSignal TransductionCells, CulturedTranscription FactorsIn Situ HybridizationDisease-Free SurvivalChick EmbryoStem CellsOdontogenesisHomeodomain ProteinsRNA, MessengerSurvivalUreterCell ProliferationCell LineageLimb BudsTime FactorsBone Morphogenetic ProteinsEpitheliumImmunohistochemistryToothCell DivisionSurvival AnalysisCell LineMice, TransgenicExtremitiesEmbryo, MammalianGraft SurvivalMice, Inbred C57BLMSX1 Transcription FactorMolecular Sequence DataEmbryonic InductionMice, KnockoutBone Morphogenetic Protein 4TretinoinDNA-Binding ProteinsGene Expression RegulationEmbryonic Stem CellsOrgan Culture TechniquesSex DifferentiationHedgehog ProteinsReverse Transcriptase Polymerase Chain ReactionBase SequencePhenotypeApoptosisEctodermNeural CrestFibroblast Growth Factor 9Gene ExpressionEmbryonic and Fetal DevelopmentFibroblast Growth FactorsTrans-ActivatorsEpithelial CellsTooth GermOsteogenesisFibroblast Growth Factor 10OrganogenesisMutationModels, BiologicalPalateEndodermWnt ProteinsSkullOsteoblastsCartilageQuailMesenchymal Stromal CellsAntigens, DifferentiationGene Expression ProfilingBody PatterningProto-Oncogene ProteinsNeuronsEmbryo, NonmammalianTranscription, GeneticTreatment OutcomeSea UrchinsBone Morphogenetic Protein 2Basic Helix-Loop-Helix Transcription FactorsBlotting, WesternNerve Tissue ProteinsAmino Acid SequenceTransforming Growth Factor betaMice, Mutant StrainsFibroblast Growth Factor 4Nuclear ProteinsUrogenital SystemChondrogenesisCell MovementCell Culture TechniquesTumor Cells, CulturedPromoter Regions, GeneticDNA PrimersDown-RegulationTransfectionCoturnix