FasciculationAtrophyAxonsMuscular AtrophySuccinylcholineContactin 2Cell Adhesion Molecules, NeuronalOptic AtrophyCell Adhesion Molecules, Neuron-GliaMuscular Atrophy, SpinalSemaphorin-3ALeukocyte L1 Antigen ComplexNeural Cell Adhesion Molecule L1Motor NeuronsNeuromuscular DiseasesNeuropilin-1Multiple System AtrophyNeurologic ManifestationsNeural Cell Adhesion MoleculesNeuritesMuscle CrampMotor Neuron DiseaseElectromyographyNerve Tissue ProteinsNervous SystemSpinal Muscular Atrophies of ChildhoodAbducens NerveContactinsVomeronasal OrganCranial NervesChick EmbryoNeuropilin-2Growth Cones