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.