KidneyUreterRegenerationExtremitiesMesodermAmbystoma mexicanumCell DifferentiationSalamandridaeMorphogenesisGene Expression Regulation, DevelopmentalNephronsWolffian DuctsPAX2 Transcription FactorNotophthalmus viridescensTurbellariaAmbystomaIn Situ HybridizationGlial Cell Line-Derived Neurotrophic FactorAnimal FinsLimb BudsPlanariansOrgan Culture TechniquesOrganogenesisTriturusHomeodomain ProteinsWnt4 ProteinMesonephrosTailUrogenital SystemWilms TumorSignal TransductionProto-Oncogene Proteins c-retEmbryonic and Fetal DevelopmentEpitheliumTranscription FactorsStem CellsEmbryonic InductionAmputationForelimbWnt ProteinsImmunohistochemistryEmbryo, MammalianMolecular Sequence DataBone Morphogenetic Protein 4Fibroblast Growth FactorsBone Morphogenetic ProteinsUrodelaPleurodelesZebrafishRNA, MessengerCell ProliferationBone Morphogenetic Protein 7Mice, TransgenicNerve TissueBody PatterningCells, CulturedMSX1 Transcription FactorTretinoinBase SequenceNotophthalmusFibroblast Growth Factor 9Gene ExpressionMice, KnockoutKidney TubulesCartilageGlial Cell Line-Derived Neurotrophic Factor ReceptorsChick EmbryoEpithelial CellsCell DivisionReverse Transcriptase Polymerase Chain ReactionKidney Tubules, CollectingMice, Mutant StrainsCell LineNerve Growth FactorsCell LineageUrogenital AbnormalitiesTrans-ActivatorsGenes, HomeoboxFibroblast Growth Factor 10EpidermisHedgehog ProteinsModels, BiologicalPhenotypeReceptor, Fibroblast Growth Factor, Type 2OdontogenesisDNA PrimersDNA-Binding ProteinsAmino Acid SequenceTime FactorsUrinary TractReceptor Protein-Tyrosine KinasesZebrafish ProteinsEmbryo, NonmammalianMice, Inbred C57BLGene Expression ProfilingGene Expression RegulationAnaplasiaToothCell DedifferentiationEmbryonic Development