NeuronsCell ProliferationNeurons, AfferentMotor NeuronsCells, CulturedSignal TransductionCell DifferentiationAction PotentialsImmunohistochemistryApoptosisMice, Inbred C57BLDopaminergic NeuronsCell DivisionCell SurvivalRNA, MessengerCell Line, TumorTime FactorsMice, TransgenicNerve Tissue ProteinsHippocampusGABAergic NeuronsCell CyclePatch-Clamp TechniquesMice, KnockoutElectrophysiologyCell CountBromodeoxyuridineAnimals, NewbornAxonsCell MovementSynapsesGanglia, SpinalDendritesSensory Receptor CellsDose-Response Relationship, DrugSynaptic TransmissionOlfactory Receptor NeuronsCerebral CortexCell LineSpinal CordElectric StimulationRats, WistarBlotting, WesternGene Expression RegulationStem CellsMembrane PotentialsCholinergic Neuronsgamma-Aminobutyric AcidRats, Sprague-DawleyReverse Transcriptase Polymerase Chain ReactionLymphocyte ActivationPhosphorylationNeurogenesisNeural InhibitionBrainNeurons, EfferentMotor Neuron DiseaseGene Expression Regulation, DevelopmentalModels, NeurologicalNeuropeptidesGene ExpressionDisease Models, AnimalPyramidal CellsMesencephalonTranscription FactorsTransfectionKi-67 AntigenDopamineMedulla OblongataInterneuronsMolecular Sequence DataCalciumRNA, Small InterferingExcitatory Postsynaptic PotentialsDown-RegulationNeurogliaIn Situ HybridizationProliferating Cell Nuclear AntigenFlow CytometryCatsT-LymphocytesUp-RegulationSerotonergic NeuronsMutationGreen Fluorescent ProteinsTumor Cells, CulturedEnzyme InhibitorsGlutamic AcidCell DeathPhenotypeNerve Growth FactorsFibroblastsEmbryo, MammalianOrgan Culture TechniquesTyrosine 3-MonooxygenaseModels, BiologicalTetrodotoxinEpithelial CellsNeuritesGene Expression Regulation, Neoplastic