If one is talking about interstate business, a company that is in one state provides its products and services to a customer in another state or several states. Intrastate. Intrastate refers to anything that pertains to a single state and does not require crossing over the boundaries of a single state.
H. pylori was first discovered in the stomachs of patients with gastritis and ulcers in 1982 by Drs. Barry Marshall and Robin Warren of Perth, Australia. At the time, the conventional thinking was that no bacterium could live in the acid environment of the human stomach.
1 H. pylori causes chronic inflammation (gastritis) by invading the lining of the stomach and producing a cytotoxin termed vacuolating cytotoxin A (Vac-A), and thus can lead to ulcer formation. 2  Although many infected individuals have no symptoms, other infected individuals may have occasional episodes of: 3  belching,