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Abstract
SUMMARY: Bacteriophage øR was prepared and purified in sufficient quantity to determine the composition and base ratios of its nucleic acid. The ratios are such that the complementary double-stranded structure usually found in deoxyribonucleic acid (DNA) seems unlikely to be present. This observation and the accessibility of the DNA of phage øR to the action of formaldehyde support the view that phage øR, like phage øX-174 which it resembles, carries its nucleic acid in a single strand.
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© Society for General Microbiology 1962