Helicobacter pylori (H. pylori) is a spiral-shaped bacterium that grows in the mucus layer that coats the inside of the human stomach. Though most bacteria cannot survive in the acidic environment ...

Anatomist, Claire Smith, is showing me a real human digestive system. 'It's a vast, alien-looking mass of tubes. 'And this is the stomach.' DR CHRIS VAN TULLEKEN:I guess I thought it would be a ...