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All mice partially deuterated by ingestion of 29% heavy water for 12 days survived whole body gamma irradiation (8.5 Gy) from a 60Co source, whereas 42% of nondeuterated control animals died from bone marrow failure. The incorporation of 3HTdR into enterocytic DNA, as measured by autoradiography and liquid scintillation spectrometry, was used to assess the(More)
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