Helicobacter pylori Is Not Eradicated after Triple Therapy: A Nested PCR Based Study

Figure 6

Electrophotograph of restriction digestion of fliI gene of H. pylori strains with Mnl I, restricted 640 bp fliI gene amplicon into three fragments (431, 154, and 55 bp). Lanes 1, 18, 19, and 36: 100 bp molecular marker; lanes 2 to 17: restriction pattern of PCR product specific to fliI after treatment; lanes 6, 10, 15, and 17 exhibited different band pattern comparison to their previous strains; and lanes 20–35: restriction pattern of amplicons specific to fliI gene before treatment.