http://www.nature.com/news/2011/110420/
full/news.2011.249.html

Bacterial populations fall into three distinct classes that could help to personalize medicine.Researchers have only recently begun to appreciate the importance of the bacterial cells that grow on and in our bodies, outnumbering our own cells by about ten to one. In rodents, gut microbes are known to influence weight and immunity against disease

http://www.mdheal.org/microbes.htm

The effect of intestinal microbes on systemic immunity.

http://healthydevil.studentaffairs.duke.
edu/health_information/allergy.html

The body's immune system is designed to produce various factors to fight foreign substances, including bacteria, viruses, and other proteins that the immune system perceives as threatening. An allergic response occurs when the body's immune system over-responds or is hypersensitive to specific non-infectious particles.

http://www.orthomed.com/bacteria.htm

Bacterial Infections

http://www.ivfg.nl/Info_GSDL_Testpanels.htm

Urineonderzoek naar de klaring van twee niet-gemetaboliseerde suikers, lactulose en mannitol. Identificeert “leaky gut”, ofwel "lekkende darm", en malabsorptie.