Fig. 1From: A variety of Helicobacter pylori strains colonize the stomach of non-bleeding Egyptian patients with upper gastrointestinal disordersTwo percent agarose gel electrophoresis of PCR products of H. pylori 16s rRNA. Lane M: molecular weight marker (100 bp). Lanes 1, 4, and 5: positive DNA. Lanes 2 and 3: negative DNA samples. Arrow points to expected amplicon band size (480 bp)Back to article page