| 11. | Until e-beams became available, radioactive isotopes were used to supply the radiation.
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| 12. | This sparked songs about the invisibility of environmental effects like radioactive isotopes.
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| 13. | Now they're helping fight disease with radioactive isotopes salvaged from the nuclear waste.
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| 14. | Radioactive isotopes can be tested using the autoradiographs of gels in gel electrophoresis.
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| 15. | Cesium _ 137 is named after a radioactive isotope of caesium.
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| 16. | Cobalt-60 is a radioactive isotope often used in cancer treatment and industrial processes.
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| 17. | This was first demonstrated by specifically labelling replicating bacterial chromosomes with radioactive isotopes.
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| 18. | Bexxar consists of a monoclonal antibody attached to a radioactive isotope.
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| 19. | The method uses radiocarbon, abbreviated 14C, a radioactive isotope of carbon.
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| 20. | Ukrainian factories and laboratories have seen many thefts of appliances with radioactive isotopes.
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