This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American Urea is a small molecule formed as proteins ...

Background. The development of an efficacious vaccine against infection with Helicobacter pylori, the causative agent of chronic gastritis, peptic ulcer disease, and gastric adenocarcinoma, remains a ...

This is a preview. Log in through your library . Abstract Urease is a nickel-containing urea hydrolase involved in nitrogen recycling from ureide, purine, and arginine catabolism in plants. The ...

The ulcer-causing bacterium Helicobacter pylori thrives where most other living things get chemically minced into bits–the acidic environment of the human stomach. Scientists are divided on exactly ...