VertebratesLimb BudsExtremitiesZebrafishLimb Deformities, CongenitalLimb SalvageGene Expression Regulation, DevelopmentalMolecular Sequence DataPhantom LimbBody PatterningEvolution, MolecularAmino Acid SequenceZebrafish ProteinsEmbryo, NonmammalianChordata, NonvertebrateBiological EvolutionFishesIn Situ HybridizationLampreysBase SequenceReptilesHomeodomain ProteinsHagfishesSequence Homology, Amino AcidInvertebratesLegXenopus ProteinsLower ExtremityForelimbMorphogenesisMesodermHindlimbSequence AlignmentSpecies SpecificityAmphibiansGenes, HomeoboxConserved SequenceChickensIschemiaAmputationTranscription FactorsChordataOryziasSharksTakifuguXenopusCiona intestinalisGene DuplicationPetromyzonAmbystoma mexicanumAnimals, Genetically ModifiedGenomeMammalsXenopus laevisCloning, MolecularAvian ProteinsDrosophila ProteinsDrosophilaSignal TransductionLizardsChick EmbryoUrochordataBirdsModels, BiologicalFish ProteinsDNA, ComplementarySalamandridaeFibroblast Growth Factor 8TetraodontiformesArmSyntenyEmbryonic InductionMutationPhotoreceptor Cells, VertebrateLarvaMuscle, SkeletalRegenerationFibroblast Growth FactorsRhombencephalonLoop of HenleNervous SystemBone Morphogenetic ProteinsGastrulaPolydactylyJawLocomotionUrodelaTime FactorsUpper ExtremityRNA, MessengerEmbryonic DevelopmentWnt ProteinsNeural CrestDrosophila melanogasterDNA-Binding ProteinsFossilsBiomechanical PhenomenaEctodermTurtlesMuscles