Food AnalysisPlant ExtractsDietCholine KinaseCholine O-AcetyltransferaseCholine DeficiencyHemicholinium 3BetaineCytidine Diphosphate CholineCholine DehydrogenasePhosphatidylcholinesPhosphorylcholinePhosphatidylethanolamine N-MethyltransferaseGlycerylphosphorylcholineEthanolamineLipotropic AgentsDeanolAcetylcholineSarcosinePhospholipidsMagnetic Resonance SpectroscopyEthanolaminesCreatineMethioninePhosphatidylethanolaminesKineticsInositolCholine-Phosphate CytidylyltransferaseTime FactorsCholinergic FibersAcetylcholinesteraseVesicular Acetylcholine Transport ProteinsBetaine-Aldehyde DehydrogenaseDiacylglycerol CholinephosphotransferaseMolecular Sequence DataNootropic AgentsBrainLiverAspartic AcidMembrane Transport ProteinsCarbonReproducibility of ResultsThiocholineBiological TransportAmino AlcoholsSodiumCholinergic AgentsCarbon RadioisotopesCulture MediaTritiumLysophosphatidylcholinesPregnancyPhysostigmineNitrogenSphingomyelinsHydrogen-Ion ConcentrationBetaine-Homocysteine S-MethyltransferasePlasmalogensCells, CulturedChromatography, Thin LayerQuaternary Ammonium CompoundsCarbon IsotopesAmino Acid SequenceNutritional RequirementsModels, BiologicalNeuronsRats, Sprague-DawleyNucleotidyltransferasesBiological Transport, ActiveParasympathetic Nervous SystemBase SequenceArthrobacterPhospholipasesPhospholipase DCholinergic NeuronsPhosphotransferasesLithiumDose-Response Relationship, DrugPotassiumTemperatureCattleAlcohol OxidoreductasesFolic AcidSensitivity and SpecificityRats, Inbred StrainsMutationProtonsEscherichia coliDietary SupplementsSeptum of BrainCholinesterase InhibitorsHomocysteineEthanolaminephosphotransferaseOrganic Cation Transport ProteinsReceptors, NicotinicAnimal FeedMagnetic Resonance ImagingTreatment OutcomeSpecies SpecificitySequence Analysis, DNA