Notophthalmus viridescensSalamandridaeExtremitiesRegenerationAmbystoma mexicanumUrodelaAmbystomaTriturusForelimbLimb BudsPleurodelesNerve RegenerationAmputationLiver RegenerationTailIn Situ HybridizationPlanariansTurbellariaAmphibiansAnimal FinsWound HealingNotophthalmusFibroblast Growth FactorsBone RegenerationXenopus ProteinsGene Expression Regulation, DevelopmentalHindlimbXenopus laevisLimb SalvagePAX7 Transcription FactorLimb Deformities, Congenital