Thermorestoration of mutagenic radiation damage in bacterial spores

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Science  30 Jun 1978:
Vol. 200, Issue 4349, pp. 1493-1494
DOI: 10.1126/science.96526


The frequency of mutations in Bacillus subtilis spores irradiated anoxically with ionizing radiation decreased as a result of subsequent anoxic heating to the same extent as the increase in spore survival. This result indicates that DNA damage is the origin of the "thermorestoration" phenomenon.