Abstract
THE presence of molecular hydrogen during irradiation is known to affect radiation chemical reactions. Its influence is ascribed to the reaction H2 + OH ⇐ H + H2O1 in which the very active oxidizing hydroxyl radicals disappear and hydrogen atoms arise. If hydrogen were to affect biological response to radiation, hydroxyl radicals would be strongly implicated as being responsible for part of the damage. Read2 found no difference in the effect of radiation on growth of bean roots exposed in 14 atm. of hydrogen, or in 14 atm. of nitrogen. We have found that when gases are applied at 50 atm., hydrogen influences radiation damage differently from nitrogen.
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References
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EBERT, M., HOWARD, A. Modification of X-Ray Sensitivity of Bean Roots by Hydrogen Gas. Nature 176, 828–829 (1955). https://doi.org/10.1038/176828a0
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DOI: https://doi.org/10.1038/176828a0
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