Growth ConesNerve RegenerationDecapodiformesNeuronsAxonal TransportMotor NeuronsMyelin SheathOptic NerveNerve Tissue ProteinsSpinal CordRetinal Ganglion CellsImage Processing, Computer-AssistedTime FactorsImage EnhancementDendritesPhantoms, ImagingSchwann CellsConditioning, ClassicalLearningOptic ChiasmImaging, Three-DimensionalNeural ConductionArtifactsImage Interpretation, Computer-AssistedSemaphorinsWallerian DegenerationSemaphorin-3ANeurons, AfferentSynapsesNeuritesCentral Nervous SystemRats, Sprague-DawleyCells, CulturedGene Expression Regulation, DevelopmentalBrainReproducibility of ResultsAction PotentialsPeripheral NervesGanglia, SpinalNerve Growth FactorsRetinaNerve Fibers, MyelinatedConditioning (Psychology)Superior ColliculiMolecular Sequence DataAvoidance LearningMutationMicroscopy, ElectronAlgorithmsSensory Receptor CellsChick EmbryoNeurogliaImmunohistochemistryAnimals, NewbornBehavior, AnimalAnimals, Genetically ModifiedGAP-43 ProteinAssociation LearningAxotomyMice, Inbred C57BLNervous SystemVisual PathwaysMagnetic Resonance ImagingMemoryExtinction, PsychologicalPresynaptic TerminalsSignal TransductionRanvier's NodesGreen Fluorescent ProteinsHorseradish PeroxidaseRetention (Psychology)Nerve CrushCerebral CortexCatsElectric StimulationConditioning, OperantFearIronSiderophoresZebrafishSensitivity and SpecificityDrosophilaPhenotypeDiencephalonThalamusCell DifferentiationMaze LearningMice, TransgenicConditioning, EyelidNerve DegenerationModels, BiologicalMice, KnockoutAnalysis of VarianceNeuropilin-1Olfactory BulbContactin 2Embryo, NonmammalianPyramidal TractsOlfactory NerveLanguage Development