Motor NeuronsCell DifferentiationNeuronsNuclear Receptor Subfamily 4, Group A, Member 2Motor Neuron DiseaseNeurogenesisDopaminergic NeuronsMesencephalonGene Expression Regulation, DevelopmentalNeurons, AfferentNerve Tissue ProteinsHomeodomain ProteinsTranscription FactorsStem CellsCells, CulturedSurvival of Motor Neuron 1 ProteinChick EmbryoTyrosine 3-MonooxygenaseBasic Helix-Loop-Helix Transcription FactorsEmbryonic Stem CellsDopamineImmunohistochemistryIn Situ HybridizationMotor CortexSurvival of Motor Neuron 2 ProteinEvoked Potentials, MotorSignal TransductionSpinal CordAmyotrophic Lateral SclerosisHedgehog ProteinsMolecular Sequence DataMuscular Atrophy, SpinalMotor ActivityAxonsSMN Complex ProteinsAction PotentialsMice, TransgenicMice, Inbred C57BLMolecular Motor ProteinsRNA, MessengerTime FactorsSynapsesElectric StimulationGene Expression RegulationNerve DegenerationCell LineNeuromuscular DiseasesGanglia, InvertebrateMice, KnockoutElectrophysiologyMutationInterneuronsAnimals, NewbornCell LineageSynaptic TransmissionMovementCholinergic NeuronsPhenotypeBrainAplysiaSuperoxide DismutaseSex DifferentiationNeuromuscular JunctionDendritesDenture Precision AttachmentSensory Receptor CellsCaricatures as TopicElectromyographyAnimals, Genetically ModifiedEmbryo, MammalianGanglia, SpinalAnterior Horn CellsCell CountGABAergic NeuronsGreen Fluorescent ProteinsPatch-Clamp TechniquesCell DivisionMuscle, SkeletalCell ProliferationCerebral CortexCell SurvivalNeural InhibitionBulbar Palsy, ProgressiveModels, NeurologicalGene ExpressionBase SequenceTretinoinReverse Transcriptase Polymerase Chain ReactionMusclesHippocampusCentral Nervous SystemNeuropeptides