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. 1965 Jul 16;149(3681):308-10.
doi: 10.1126/science.149.3681.308.

Thymine Photoproducts but not Thymine Dimers Found in Ultraviolet-Irradiated Bacterial Spores

J E Donnellan Jr, R B Setlow

Thymine Photoproducts but not Thymine Dimers Found in Ultraviolet-Irradiated Bacterial Spores

J E Donnellan Jr et al. Science. .

Abstract

Bacillus megateriunm spores labeled with tritiated thymidine were irradiated with monochromatic ultraviolet light, and the DNA of the spores was analvzed for thymine-containing, products. No thymine dimers were observed, but three other thymine photoproducts were found. The unknown products of radiation were produced in vitro by irradiation of DNA that had been dried in the, presence of various salts.

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