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A cosmid (pPR1347) carrying both the rfb gene cluster and the rfc gene of a Salmonella group B serovar has been constructed; Escherichia coli K-12 strains carrying this cosmid produce long-chain O antigen, are sensitive to phage P22, and can be transduced by P22. Some of the benefits of P22 transduction are now available for studying E. coli and potentially other genera.
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Neal et al. (1993) studied this question.
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