Limb BudsExtremitiesFibroblast Growth FactorsLimb Deformities, CongenitalChick EmbryoFibroblast Growth Factor 4PolydactylyFibroblast Growth Factor 8MesodermEctodermHedgehog ProteinsGene Expression Regulation, DevelopmentalMorphogenesisBody PatterningIn Situ HybridizationForelimbFibroblast Growth Factor 10Embryonic InductionCartilageWingHomeodomain ProteinsLimb SalvageMSX1 Transcription FactorHindlimbReceptors, Fibroblast Growth FactorBone Morphogenetic ProteinsGenes, HomeoboxQuailPhantom LimbSignal TransductionAmbystoma mexicanumFibroblast Growth Factor 2Embryo, MammalianTranscription FactorsTrans-ActivatorsSomitesReceptor, Fibroblast Growth Factor, Type 1Receptor, Fibroblast Growth Factor, Type 2Bone Morphogenetic Protein 2Bone Morphogenetic Protein 4RegenerationChondrogenesisAvian ProteinsEmbryonic and Fetal DevelopmentMolecular Sequence DataProteinsCell DifferentiationTretinoinEctromeliaToesFibroblast Growth Factor 3Wnt ProteinsSyndactylyPaired Box Transcription FactorsZebrafish ProteinsSalamandridaeMutationLegFibroblast Growth Factor 1Embryo, NonmammalianTeratogensT-Box Domain ProteinsMice, TransgenicKruppel-Like Transcription FactorsLower ExtremityBase SequenceMice, Mutant StrainsAmino Acid SequenceSOX9 Transcription FactorFeathersCoturnixTime FactorsGene ExpressionIschemiaEmbryonic DevelopmentOrgan Culture TechniquesAmputationNotophthalmus viridescensDNA-Binding ProteinsModels, BiologicalMuscle, SkeletalIntercellular Signaling Peptides and ProteinsXenopus ProteinsProto-Oncogene ProteinsPhenotypeChimeraBone and BonesAmbystomaUreterEmbryonic StructuresImmunohistochemistryZebrafishFetal ProteinsOrganogenesisBranchial RegionMusclesElaeagnaceaeVertebratesCells, CulturedCell Division