Figure 1: Characterization of virulence factors of H. pylori by PCR. Each lane shows different virulence factors of H. pylori strain isolated from human samples. M: Marker, A: babA (2192 bp), B: cagA (1741 bp), C: VacA (1624 bp), D: AspA (1401 bp), E: HomB (1005 bp), and F: sabA (187 bp).