Protein products of recombinant ColE1 plasmids are preferentially synthesized and can easily be identified in Escherichia coli cells recovering from prolonged treatment with chloramphenicol.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC294285PMC
http://dx.doi.org/10.1128/jb.143.1.535-537.1980DOI Listing

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