Spectroscopy, Electron Energy-LossMicroscopy, Energy-Filtering Transmission ElectronElectron Probe MicroanalysisElectronsMass SpectrometryEnergy MetabolismTandem Mass SpectrometryRadiation DosageMagnetic Resonance SpectroscopySpectrometry, Mass, Electrospray IonizationSpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationGas Chromatography-Mass SpectrometryMicroscopy, ElectronChromatography, LiquidEnergy IntakeNumerical Analysis, Computer-AssistedMicroscopy, Electron, ScanningElectron Transport