Notophthalmus viridescensSalamandridaeExtremitiesRegenerationAmbystoma mexicanumUrodelaAmbystomaTriturusForelimbLimb BudsNerve RegenerationPleurodelesMammalsAmputationLiver RegenerationTailIn Situ HybridizationAmphibiansPlanariansTurbellariaAnimal FinsWound HealingNotophthalmusFibroblast Growth FactorsGene Expression Regulation, DevelopmentalBone RegenerationXenopus ProteinsHindlimbXenopus laevisLimb SalvagePAX7 Transcription FactorMolecular Sequence DataLimb Deformities, Congenital