Ginsberg, D M Chemical protection against single-strand breaks in DNA of gamma-irradiated E. coli. [electronic resource] - Radiation research Aug 1969 - 421-35 p. digital Publication Type: Journal Article ISSN: 0033-7587 Subjects--Topical Terms: Centrifugation, Density GradientDNA, Bacterial--radiation effectsEscherichia coli--radiation effectsEthylamines--pharmacologyMethionine--pharmacologyRadiation GeneticsRadiation-Protective Agents--pharmacologyThymidine--metabolismTritium