Enteric Nervous SystemHirschsprung DiseaseMyenteric PlexusSubmucous PlexusNeural CrestCentral Nervous SystemNervous SystemGastrointestinal TractProto-Oncogene Proteins c-retGastrointestinal MotilityDigestive SystemPeripheral Nervous SystemSOXE Transcription FactorsEndothelin-3NeuronsNeurogliaGlial Cell Line-Derived Neurotrophic FactorIntestinesGangliaColonIleumGlial Cell Line-Derived Neurotrophic Factor ReceptorsQuailDigestive System Physiological PhenomenaImmunohistochemistryMegacolonVasoactive Intestinal PeptideSerotonin 5-HT4 Receptor AgonistsIntestine, SmallCentral Nervous System DiseasesPeristalsisVagus NerveGuinea PigsInterstitial Cells of CajalCell MovementIntestinal Pseudo-ObstructionJejunumNeurofilament ProteinsReceptor Protein-Tyrosine KinasesGene Expression Regulation, DevelopmentalHigh Mobility Group ProteinsChick EmbryoBrainIleusIntestine, LargeCeliac PlexusNitrergic NeuronsStem CellsCentral Nervous System NeoplasmsReceptors, Serotonin, 5-HT4In Situ HybridizationMice, TransgenicNeurotransmitter AgentsNerve Tissue ProteinsCoturnixUbiquitin ThiolesteraseMice, Inbred C57BLNeurogenesisNerve Growth FactorsAutonomic Nervous SystemReceptor, Endothelin BCholine O-AcetyltransferaseManducaIntestinal MucosaGastrointestinal DiseasesStomachCell DifferentiationSympathetic Nervous SystemHexamethoniumCalbindin 2NADPH DehydrogenaseIrritable Bowel SyndromeTetrodotoxinSerotoninGastrointestinal TransitMice, Mutant StrainsGanglia, AutonomicSignal TransductionMuscle, SmoothDisease Models, AnimalNervous System Physiological PhenomenaZebrafishCell CountDrosophila ProteinsMice, KnockoutCells, CulturedRats, Sprague-DawleyGastroparesisNeurturinNitric Oxide Synthase Type IMyoelectric Complex, MigratingMutationNeuropeptidesEmbryo, NonmammalianGastric EmptyingZebrafish ProteinsTyrosine 3-MonooxygenaseCentral Nervous System InfectionsTime FactorsMolecular Sequence Data