A source may pertain-to an (isotope polonium-210).Logical formLearned from3 sentences. A program may include use of (carbon isotope ratio testing).Logical formLearned from3 sentences. Isotopes can be for medical research.Logical formLearned from3 sentences. Uraniums may have concentration of fissile isotopes.Logical formLearned from3 sentences. A (radio isotope) may be needed for weapons.Logical formLearned from3 sentences. A percent may pertain-to a (radio isotope).Logical formLearned from3 sentences. A radioactive isotope may be used in (cancer treatment).Logical formLearned from3 sentences. A male may be involved in an (isotope separation program).Logical formLearned from3 sentences. An (isotope separation program) can be for nuclear weapons.Logical formLearned from3 sentences. A (u-235 isotope) can be fissionable.Logical formLearned from3 sentences. An experiment can be with (laser isotope enrichment).Logical formLearned from3 sentences. Al-qaida may construct a device by providding medical isotopes.Logical formLearned from3 sentences. Letters may describe an isotope.Logical formLearned from3 sentences. Isotopes may be separated.Logical formLearned from3 sentences. A (radiation exposure) can be from isotopes.Logical formLearned from3 sentences.