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- W1979291292 abstract "Experiments were conducted to investigate the effects of increasing or decreasing the yield of hydroxyl radicals (.OH) reacting with target molecules on the survival of CHO cells irradiated in a thin layer with single 3-nsec pulses of electrons. Dimethyl sulfoxide (DMSO), a known radioprotector, was used as an .OH scavenger. The gas nitrous oxide (N2O), which scavenges hydrated electrons and in the process generates an additional yield of .OH, was used in an attempt to produce sensitization by increasing the amount of .OH-induced cellular damage. It was found that DMSO at high concentration was an effective radioprotective agent in cells equilibrated with nitrogen, air, and N2O and irradiated at ultrahigh dose rates. Sensitization by N2O was observed, but only under certain conditions, specifically, when a high concentration of the .OH scavenger DMSO was also present. The enhancement ratio (ER) for oxygen sensitization was reduced in the presence of DMSO, as was the ER for sensitization by misonidazole. Interpretation of these results according to radiation chemistry considerations will be discussed." @default.
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- W1979291292 date "1983-09-01" @default.
- W1979291292 modified "2023-09-23" @default.
- W1979291292 title "Effects of Modifiers of the Yield of Hydroxyl Radicals on the Radiosensitivity of Mammalian Cells at Ultrahigh Dose Rates" @default.
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- W1979291292 doi "https://doi.org/10.2307/3576105" @default.
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