BoronBoron CompoundsBoranesBoric AcidsBoratesBorohydridesNeutron Capture TherapyIsotopesNeutronsSpectrometry, Mass, Fast Atom BombardmentNutritional RequirementsPhenylalanineSulfhydryl CompoundsRadiation-Sensitizing AgentsModels, MolecularMolecular StructureTrace ElementsSpectrometry, Mass, Secondary IonTissue DistributionMagnetic Resonance SpectroscopyFluorineStereoisomerism