Energy MetabolismMetabolismLipid MetabolismNitrogenGlucoseAmino Acids, EssentialMuscle ProteinsMuscle, SkeletalPhenylalanineAmino Acids3-DeazauridineLiverMetabolic Networks and PathwaysInsulinSarcopeniaLeucineCarbon IsotopesMetabolism, Inborn ErrorsModels, BiologicalKineticsGlycolysisBone and BonesFatty AcidsOxidation-ReductionGlutamineDietary ProteinsPostprandial PeriodBlood GlucoseX-Ray MicrotomographyAgingRNA, MessengerSignal TransductionBody WeightTime FactorsCytochrome P-450 Enzyme SystemCarbonInsulin-Like Growth Factor IDietary SupplementsCholesterolParathyroid HormoneTriglyceridesCells, CulturedHomeostasisMicrosomes, LiverLactic AcidFatty Acids, NonesterifiedOxygen ConsumptionProteinsCarbon RadioisotopesUreaCarbohydrate MetabolismChromatography, High Pressure LiquidMitochondriaAryl Hydrocarbon HydroxylasesLegOsteogenesisBiological TransportProtein BiosynthesisLipidsMetabolomeLactatesGene Expression ProfilingMagnetic Resonance SpectroscopyGrowth HormoneDeoxyglucosePhosphorusBrainXenobioticsEatingMolecular Sequence DataMutationIronOsteoblastsRats, Sprague-DawleyGene Expression RegulationEnergy IntakeOxygenBody CompositionInsulin ResistanceBiotransformationAdipose TissueCarbon DioxideDietGas Chromatography-Mass SpectrometrySpecies SpecificityFolic AcidPhospholipidsPhenotypeGlutathioneMice, Inbred C57BLOxidative PhosphorylationRats, Inbred StrainsAdenosine TriphosphateMice, KnockoutFastingOxidative StressHepatocytesRats, WistarLipoproteinsGenotype