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. 2003 Jan;41(1):174–180. doi: 10.1128/JCM.41.1.174-180.2003

FIG. 3.

FIG. 3.

PFGE analysis of selected E. coli O157:H7 isolates after digestion with XbaI. Lanes 1, 10, and 15 contain control E. coli strain G5244, with numbers at left indicating the band size in kilobase pairs. Lanes 1 to 9 contain clinical isolates from outbreak-associated patients, and lanes 11 to 14 contain environmental isolates associated with the outbreak. Lane 2, PFGE type 1; lanes 3 to 7, related subtypes (three or fewer band differences) 1a, 1b, 1c, 1g, and 1 h, respectively; lanes 8 and 9, PFGE types 2 and 4; lane 11, PFGE type 1; lanes 12 to 14, subtypes (three or fewer band differences) 1a, 1e, and 1f, respectively.