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AFLP profiles of isolates of H. pylori from biopsy specimens obtained from six patients before and after antibiotic treatment. Patient identity is indicated by the braces below the lanes. The first two lanes for each patient are the profiles for pretreatment isolates; the second two lanes in each set are the profiles for posttreatment isolates. DNA size standards (123-bp marker; Gibco BRL) are in the lanes marked m.
