- Helicobacter pylori
S-shaped or curved Gram negative bacteria (0.5-0.9 x 3.0 m m), non-spore forming, can be flagellate; found in human stomach. Was originally named Campylobacter pyloridis. Infection with H. pylori is now considered to be a major predisposing cause of gastric ulcers and antibiotic therapy is increasingly used.
Dictionary of molecular biology. 2004.