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  • Title: Alkaline sucrose gradient sedimentation of chromosomal deoxyribonucleic acid from Escherichia coli PolA + and PolA - strains during thymine starvation.
    Author: Sedgwick SG, Bridges BA.
    Journal: J Bacteriol; 1971 Dec; 108(3):1422-3. PubMed ID: 4945202.
    Abstract:
    Single-strand breaks were not detected in the deoxyribonucleic acid of Escherichia coli after thymine starvation for up to 180 min, even in a sensitive PolA(-) strain.
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