Their idea was laughed at by scientists and doctors who did not believe that any bacteria could live in the acidic stomach.

The survival of H. pylori in the acidic stomach is dependent on urease.

In this disease, acidic stomach, bile, small intestine and pancreatic contents cause damage to the cells of the lower esophagus.

Rabbits eat these to meet their nutritional requirements; the mucous coating allows the nutrients to pass through the acidic stomach for digestion in the intestines.

Since non-ionic species diffuse more readily through cell membranes, weak acids will have a higher absorption in the highly acidic stomach.

Unlike other mammals, which typically have highly acidic stomachs, the echidna has low levels of acidity, almost neutral, with pH in the 6.2-7.4 range.

Because cocaine is hydrolyzed and rendered inactive in the acidic stomach, it is not readily absorbed when ingested alone.

One root is good for the blood, one plant helps an acidic stomach.

Unlike that in our own highly acidic stomachs, the normal pH of a rumen is neutral.

Crocodiles have the most acidic stomach of any vertebrate.