[Intestinal helminthiasis--general practice problem of the gastroenterologist].

In case of nonspecific, not constantly occurring abdominal symptoms the investigator should be aware of invermination, especially when immigrants or tourists returning from far regions complain about diarrheal tendency, stomach ache, nausea or hepatic and biliary symptoms. Intestinal helminthism is spread all over the world. Some of these diseases are limited to warm regions, but they are more and more often seen in our gastroenterological outpatient departments.

[Persorption of microparticles].

Solid, hard microparticles, such as starch granules, pollen, cellulose particles, fibres and crystals, whose diameters are well into the micrometre range, are incorporated regularly and in considerable numbers from the digestive tract. Motor factors play an important part in the paracellular penetration of the epithelial cell layer. From the subepithelial region the microparticles are transported away via lymph and blood vessels.

Role of the systemic cellular immune response in the pathogenesis of Helicobacter pylori-associated duodenal ulcer.

20 patients colonized by H. pylori (9 with duodenal ulcer, 11 with antral gastritis) were examined for the presence of a systemic cellular immune response to H. pylori using an in vitro lymphocyte transformation assay.