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Plasmid patterns of the Shigella clinical isolates and the transconjugant Escherichia coli from the S. flexneri isolate.
Lanes: MW, molecular weight, Escherichia coli 39R861; 1, S. sonnei n.1; 2, S. flexneri n.2; 3, S. sonnei n. 3; 4, S. sonnei n.4; 5, E. coli K12J5 transconjugant from the S. flexneri isolate n.2.
