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RAPD analysis of selected canine fecal isolates and human ExPEC strain 536. Fingerprints for canine isolates (lanes 2 to 6) and strain 536 (lane 7) were generated using RAPD primer 1281. (Primer 1283 gave similar results.) M, 100-bp molecular weight ladder (lanes 1 and 8). Sizes are indicated in base pairs.
