Commensal bacterial cells outnumber human cells up to 10-fold
[1]. A human can be viewed as a “super organism” [1] consisting of
human and bacterial cells. These cells are considered by some as a
distinct “organ” [2] that interacts extensively with the rest of the
human body [3]. In particular, the microbiota interacts with the
immune system and can affect inflammation within the body [3],
[4]. Decreased diversity of gut microbiota has been noted in a twin
study of patients with inflammatory bowel disease [5]. Some
anaerobic bacteria may be associated with the development of
colitis in animal models which are immune-deficient [6]. Experiments
in germ-free animal models introduced to different microorganisms
suggests a relationship between the microbiota and