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PFGE analysis of DNA isolated from human Salmonella strains (strains Snp1, Snp5, Snp6, and Snp7) and a Salmonella strain from a commercial product (strain Snp8). DNA was cleaved with the endonuclease XbaI or BlnI. Snp1, Snp5, Snp6, Snp7, and Snp8 designate the strains described in the text. Lanes M, S. enterica serotype Newport AM01144 (915 to 35.8 kb), used as a size marker. The braces indicate the restriction endonuclease used for each digestion.
