Isotopes can be vital to medical treatments.Logical formLearned from4 sentences. Isotopes may undergo uses.Logical formLearned from4 sentences. Isotopes may undergo an abundance.Logical formLearned from4 sentences. A stable isotope can be constituted-of-or-filled-with lead.Logical formLearned from4 sentences. Elements may have isotopes.Logical formLearned from4 sentences. An isotope may undergo additions.Logical formLearned from4 sentences. Thousands can be constituted-of-or-filled-with isotopes.Logical formLearned from4 sentences. A (laser isotope separation program) can be atomic.Logical formLearned from4 sentences. Isotopes can be spherical.Logical formLearned from4 sentences. Isotopes can be undiscovered.Logical formLearned from4 sentences. Stable isotopes may pertain-to elements.Logical formLearned from4 sentences. (Isotope identification devices) can be radioactive.Logical formLearned from4 sentences. Isotopes can be reactive.Logical formLearned from4 sentences. Stable isotopes may undergo a fractionation.Logical formLearned from4 sentences. Isotopes may undergo a diversion/separation.Logical formLearned from4 sentences.