Abstract
MUTANT strains of enteric bacteria that carry a derepressed R-factor have been isolated during laboratory experiments. These strains are characterized by the production of sex-pili by the majority of the cells in the culture and by the cells' ability to transfer their R-factors to R−recipients at high frequency. Transfer rates per donor cell of 10−1 to 10−2 often occur, as compared with a rate of transfer from a repressed strain of about 10−4 to 10−5 (refs. 1–3).
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Lee, P. A., and Richmond, M. H., J. Bacteriol. (in the press) (1969).
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LEE, P., LINTON, K. Isolation from Faeces of Cells capable of Transferring R-factors at a Derepressed Rate. Nature 224, 922 (1969). https://doi.org/10.1038/224922a0
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DOI: https://doi.org/10.1038/224922a0
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