Zu-Jia Sheng

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Plasmid pUC13 was used to clone DNA fragments of known sites from the chromosome of Escherichia coli. Each chimeric plasmid was introduced individually into the same dnaA46 mutant strain LC381 and suppressive integration (Sin) strains were selected. By means of cotransduction the null mutation recA56 was then introduced into each Sin strain and growth of(More)
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