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Comparison and Genomic Sizing of Escherichia Coli O157:H7 Isolates by Pulsed-field Gel Electrophoresis

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Date 1993 Sep 1
PMID 8215383
Citations 27
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Abstract

Genomic DNAs of Escherichia coli O157:H7 strains isolated from patients and food samples were analyzed by pulsed-field gel electrophoresis. The rare-cutting endonucleases SfiI and XbaI generated 6 and 10 distinct genomic profiles, respectively, for the 22 strains analyzed, indicating that this technique may find application for epidemiologic studies. Summation of XbaI fragments from five E. coli O157:H7 strains estimated the genomic length at ca. 4.7 Mb.

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