Figure 4. XbaI and NotI pulsed-field gel electrophoresis patterns for clonal group A Escherichia coli isolated from women with urinary tract infections in Montréal, Québec, Canada, 2006 (lanes 434 and 498) and Berkeley, California, USA, 1999–2001 (lanes 500, S203, W552, and S484). Antimicrobial drug resistance phenotypes and serogroups (O11, O17, O77, and O73) varied within and between the 2 study locations. First and last lanes, bacteriophage λ; lane +, positive control.
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