Spectroscopy, Electron Energy-LossMicroscopy, Energy-Filtering Transmission ElectronElectron Probe MicroanalysisElectronsMass SpectrometryEnergy MetabolismTandem Mass SpectrometryRadiation DosageMicroscopy, ElectronSpectrometry, Mass, Electrospray IonizationMagnetic Resonance SpectroscopyMicroscopy, Electron, ScanningSpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationGas Chromatography-Mass SpectrometryMicroscopyChromatography, LiquidEnergy IntakeNumerical Analysis, Computer-AssistedElectron Transport