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  • Title: Segregation into and replication of plasmid deoxyribonucleic acid in chromosomeless segregants of Escherichia coli.
    Author: Inselburg J.
    Journal: J Bacteriol; 1970 Jun; 102(3):642-7. PubMed ID: 4914069.
    Abstract:
    The progeny cells of Escherichia coli strain P678-54, which normally do not contain deoxyribonucleic acid (DNA), were found to carry DNA when the parental cell carried colicin factor E1 (Col E1). The DNA found in the normally DNA-less segregants was shown to be Col E1 DNA, which is present primarily as a covalently closed circular molecule that can undergo more than one complete cycle of replication.
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