32P-retention and Physical Change of DNA Irradiated in a Reactor

Abstract
Salmon sperm DNA irradiated under various conditions in a reactor was examined in two points, 32P-retention and hyperchromicity. Observed results show that no essential relationship can be found between the two phenomena. When DNA containing water was irradiated at dry-ice temperature, the 32P-retention was enhanced with increasing irradiation time (dose).

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