Limb BudsExtremitiesLimb Deformities, CongenitalPolydactylyChick EmbryoFibroblast Growth Factor 4MesodermEctodermHedgehog ProteinsGene Expression Regulation, DevelopmentalMorphogenesisFibroblast Growth Factor 8ForelimbFibroblast Growth FactorsBody PatterningIn Situ HybridizationWingCartilageLimb SalvageEmbryonic InductionHomeodomain ProteinsHindlimbBone Morphogenetic ProteinsMSX1 Transcription FactorGenes, HomeoboxQuailPhantom LimbAmbystoma mexicanumTrans-ActivatorsEmbryo, MammalianChondrogenesisBone Morphogenetic Protein 2Fibroblast Growth Factor 10RegenerationTranscription FactorsEctromeliaSomitesEmbryonic and Fetal DevelopmentProteinsToesAvian ProteinsTretinoinMolecular Sequence DataBone Morphogenetic Protein 4SyndactylyLegSalamandridaeTeratogensLower ExtremitySignal TransductionKruppel-Like Transcription FactorsCell DifferentiationPaired Box Transcription FactorsCoturnixFeathersSOX9 Transcription FactorIschemiaMutationWnt ProteinsAmputationNotophthalmus viridescensBase SequenceAmino Acid SequenceMice, TransgenicMice, Mutant StrainsTime FactorsMuscle, SkeletalAmbystomaChimeraGene ExpressionT-Box Domain ProteinsUreterEmbryonic DevelopmentDNA-Binding ProteinsElaeagnaceaeOrgan Culture TechniquesMusclesEmbryo, NonmammalianBone and BonesIntercellular Signaling Peptides and ProteinsMolecular Probe TechniquesMyogenic Regulatory Factor 5Models, BiologicalVertebratesUlnaOrganogenesisArmProto-Oncogene ProteinsEmbryonic StructuresImmunohistochemistryPhenotypeRNA, MessengerMuscle DevelopmentFootLoop of HenleBone Morphogenetic Protein ReceptorsXenopus ProteinsZebrafish ProteinsSyndecan-3Sequence Homology, Amino Acid