Stable isotope may undergo a use.Logical formLearned from4 sentences. An isotope can be fissile.Logical formLearned from4 sentences. Operators may identify isotopes.Logical formLearned from4 sentences. (Isotope ratios) can be constituted-of-or-filled-with elements.Logical formLearned from4 sentences. A stable isotope can be constituted-of-or-filled-with nitrogen.Logical formLearned from4 sentences. A (carbon isotope ratio) can be stable.Logical formLearned from4 sentences. Isotopes may undergo a fractionation.Logical formLearned from4 sentences. An isotope can be dangerous.Logical formLearned from4 sentences. Some specialists can be in (isotope separation).Logical formLearned from4 sentences. Medical isotopes can be for (cancer patients).Logical formLearned from4 sentences. A (research reactor) may provide medical isotopes.Logical formLearned from4 sentences. A reactor may produce medical isotopes.Logical formLearned from4 sentences. A shutdown may spark a shortage of medical isotopes.Logical formLearned from4 sentences. A reactor may provide a supply of isotopes.Logical formLearned from4 sentences. A nuclear reactor may produce medical isotopes.Logical formLearned from4 sentences.