Growth ConesNerve RegenerationDecapodiformesAxonal TransportNeuronsMotor NeuronsMyelin SheathOptic NerveNerve Tissue ProteinsSpinal CordRetinal Ganglion CellsDendritesSchwann CellsOptic ChiasmNeural ConductionSemaphorinsWallerian DegenerationSemaphorin-3ANeuritesNeurons, AfferentCentral Nervous SystemGanglia, SpinalSynapsesPeripheral NervesSuperior ColliculiNerve Growth FactorsRetinaAction PotentialsNerve Fibers, MyelinatedGAP-43 ProteinSensory Receptor CellsAxotomyNeurogliaGene Expression Regulation, DevelopmentalRanvier's NodesVisual PathwaysMicroscopy, ElectronPresynaptic TerminalsHorseradish PeroxidaseNerve CrushChick EmbryoAnimals, Genetically ModifiedCells, CulturedNervous SystemImmunohistochemistryNerve DegenerationRats, Sprague-DawleyNeuropilin-1Contactin 2DiencephalonCatsAnimals, NewbornOlfactory NerveSpinal Nerve RootsGreen Fluorescent ProteinsAstacoideaZebrafishElectric StimulationOlfactory BulbPeripheral Nervous SystemDrosophilaMolluscaNerve EndingsThalamusEphrin-A2Cerebral CortexReceptors, Eph FamilyPyramidal TractsMyelin ProteinsFasciculationInterneuronsEphrin-A5OligodendrogliaDrosophila ProteinsOlfactory PathwaysEmbryo, NonmammalianSpinal Cord InjuriesTrochlear NerveSynaptic TransmissionSignal TransductionHippocampusNeurogenesisModels, NeurologicalAfferent PathwaysEfferent PathwaysTime FactorsNeuropilin-2MicrotubulesElectrophysiologyMembrane PotentialsPolychaetaTectum MesencephaliGangliaMice, TransgenicOlfactory Receptor NeuronsMice, Inbred C57BLEmbryo, MammalianMice, KnockoutBrainCaenorhabditis elegans Proteins