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Plasmid profiles of pSF118-20- and pSF118-44-related replication regions in 27 L. salivarius strains. Southern hybridization of nuclease S1-treated genomic DNA of 27 L. salivarius strains with the pSF118-20 repA probe (A) and the pSF118-44 repA probe (C). (B) PFGE of nuclease S1-treated genomic DNA of 27 L. salivarius strains.
