- Normal and abnormal motor activity of oesophagus, stomach, small intestine, colon and anorectum. - Endocrine, paracrine and neurocrine peptide-untreated control mechanisms of gastrointestinal function. - Digestion and absorption of carbohydrates, lipids and proteins. - Clinical pharmacology of gastro-intestinal diseases. - Treatment of gastrointestinal cancer. - Computer analysis of manometric and electromyographic recordings. - Computer analysis of long-term pH and pressure measurements in oesophagus. - Radio immuno assay and receptor assay. - In vivo and in vitro studies of small muscle activity. - Breath tests with radioisotope and stable isotopes. - Intestinal perfusion studies. - Cell culture of intestinal smooth muscle cells. - Cell culture of myenteric neurons. - Laboratory Information System.