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Restriction digest patterns of the amplified urease gene on a 1.6-kb PCR product from 11 H. hepaticus isolates. Amplified DNA was digested with HhaI and separated by electrophoresis on a 6% Visigel. Shown are a 100-bp DNA ladder (lane 1), pattern A (lanes 2 to 4, 6 to 9, and 11), pattern B (lanes 5 and 12), and pattern C (lane 10).
