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Superinfection with R Factors by Transduction in Escherichia coli and Salmonella typhimurium
1968
Journal of Bacteriology
Superinfection immunity is found in the conjugal transfer of R factors between two fi+ R factors and between two ft-R factors (fi = fertility inhibition), as we reported previously. In contrast, no reduction in the frequencies of transduction of an fi+ R factor 222 was caused by the presence offi+ R factors in the recipients in transduction systems with phage Plkc in Escherichia coli K-12 and with phage P22 in Salmonella typhimurium LT-2. The absence of superinfection immunity in transduction
doi:10.1128/jb.96.5.1796-1802.1968
fatcat:f5x6qwpaxfadxfthzmujm6pxfm