Limb BudsExtremitiesBone Morphogenetic ProteinsLimb Deformities, CongenitalChick EmbryoPolydactylyMesodermGene Expression Regulation, DevelopmentalEctodermFibroblast Growth Factor 4Bone Morphogenetic Protein 4Hedgehog ProteinsMorphogenesisBone Morphogenetic Protein 2Body PatterningFibroblast Growth Factor 8Fibroblast Growth FactorsIn Situ HybridizationForelimbBone Morphogenetic Protein 7WingEmbryonic InductionCartilageHomeodomain ProteinsLimb SalvageBone Morphogenetic Protein ReceptorsHindlimbQuailGenes, HomeoboxMSX1 Transcription FactorBone Morphogenetic Protein Receptors, Type ISignal TransductionTrans-ActivatorsPhantom LimbEmbryo, MammalianAmbystoma mexicanumTranscription FactorsChondrogenesisProteinsCell DifferentiationFibroblast Growth Factor 10SomitesRegenerationAvian ProteinsEctromeliaEmbryonic and Fetal DevelopmentToesMolecular Sequence DataSmad ProteinsWnt ProteinsTretinoinXenopus ProteinsSmad1 ProteinSyndactylyEmbryo, NonmammalianIntercellular Signaling Peptides and ProteinsBone Morphogenetic Protein 6Zebrafish ProteinsMutationPaired Box Transcription FactorsLegTeratogensMice, TransgenicKruppel-Like Transcription FactorsSalamandridaeFeathersLower ExtremityBase SequenceSOX9 Transcription FactorCoturnixMice, Mutant StrainsDNA-Binding ProteinsAmino Acid SequenceT-Box Domain ProteinsTime FactorsEmbryonic DevelopmentUreterIschemiaOrgan Culture TechniquesGene ExpressionModels, BiologicalAmputationSmad5 ProteinNotophthalmus viridescensOrganogenesisPhenotypeOsteogenesisRNA, MessengerBone and BonesMuscle, SkeletalChimeraZebrafishBone Morphogenetic Protein 5ImmunohistochemistryAmbystomaCells, CulturedVertebratesElaeagnaceaeBone Morphogenetic Protein Receptors, Type IIMuscles