1.   Secretory IgA is the predominant isotype of antibody in the intestinal lumen, however, and is probably more important for parasite clearance.

2.   Ingested fat and carbohydrate seem to be the most potent stimuli for these two peptides, and fatty acids introduced into the small intestinal lumen elicit an appreciable response.

3.   Lperamide-N-oxide is a peripheral opiate agonist precursor which is converted to loperamide in the intestinal lumen and liver.

4.   Studies published to date assume that -glucosidase inhibitors exert their control on postprandial hyperglycaemia by delaying carbohydrate absorption from the small intestinal lumen.

5.   Moreover, many nematode larvae were seen in the intestinal lumen.

6.   Intestinal pseudo-obstruction is a clinical syndrome characterised by symptoms and signs of intestinal obstruction despite the absence of mechanical blockage of the intestinal lumen.