Isotopes may be used for (tumor detection).Logical formLearned from4 sentences. A supplier of radioactive isotopes may halt production.Logical formLearned from4 sentences. Cent may pertain-to medical isotopes.Logical formLearned from4 sentences. A radioactive isotope can be constituted-of-or-filled-with iron.Logical formLearned from4 sentences. Radioactive isotopes can be in water.Logical formLearned from4 sentences. Ratios can be constituted-of-or-filled-with (oxygen isotopes).Logical formLearned from4 sentences. Light may shift a balance of (oxygen isotopes).Logical formLearned from4 sentences. Hospitals may face a shortage of a radioactive isotope.Logical formLearned from4 sentences. An isotope can be short-lived.Logical formLearned from4 sentences. Isotopes can be used.Logical formLearned from4 sentences. Isotopes can be heavier.Logical formLearned from4 sentences. An isotope can be constituted-of-or-filled-with phosphorus.Logical formLearned from4 sentences. A (research reactor) may produce radioactive isotopes.Logical formLearned from4 sentences. A reactor may make isotopes.Logical formLearned from4 sentences. A reactor may produce isotopes.Logical formLearned from4 sentences.