Mass SpectrometryAntidiuretic AgentsProteinsMethylhistidinesSpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationSpectrometry, Mass, Electrospray IonizationProteomicsBody CompositionLipoprotein LipaseBody WeightMolecular Sequence DataLiverAmino Acid SequenceMuscle ProteinsProteomeMolecular WeightMuscle, SkeletalSwineRNA, MessengerRats, Sprague-DawleyCholesterolElectrophoresis, Polyacrylamide GelBody Mass IndexInsulinKineticsTandem Mass SpectrometryChromatography, LiquidChromatography, High Pressure LiquidSpectrometry, Mass, Secondary IonObesityMass ScreeningGas Chromatography-Mass SpectrometrySpectrometry, Mass, Fast Atom BombardmentAbsorptiometry, PhotonMass MediaAdipose TissuePeptidesMass Casualty IncidentsRisk FactorsOrgan SizeTime FactorsBone DensitySensitivity and SpecificityAnthropometryPeptide MappingTomography, X-Ray ComputedElectrophoresis, Gel, Two-DimensionalHypertrophy, Left VentricularMass VaccinationMass BehaviorCross-Sectional StudiesBase SequenceOverweightProspective StudiesBody ConstitutionIsotope LabelingMolecular StructurePeptide FragmentsAdiposityEnergy MetabolismCloning, MolecularRegression AnalysisBiological MarkersBone and BonesLinear ModelsSequence Homology, Amino AcidBody SizeCohort StudiesIonsThinnessMagnetic Resonance SpectroscopyMagnetic Resonance ImagingBody HeightRecombinant ProteinsCalibrationCattleSex FactorsChromatography, GelFourier AnalysisModels, BiologicalReference StandardsAge FactorsSubstrate SpecificityDeuterium Exchange MeasurementAdnexal DiseasesChromatography, Ion ExchangeAgingExerciseWeight LossAlgorithmsBasal MetabolismCyclotronsFollow-Up StudiesReference ValuesBlood GlucoseTrypsinLipidsDeuteriumCase-Control StudiesEscherichia coli