Sears, "The Bacteroides
fragilis toxin binds to a specific intestinal epithelial cell receptor," Infection and Immunity, vol.
To try to rebalance the bacterial population, the researchers treated their animals with a strain of bacteria known as Bacteroides
fragilis that had previously been shown to protect mice from gut inflammation, hoping these bacteria would crowd out the culprits that were causing the leaky gut.
ovatus (gram positive bacteria more than gram negative bacteria) this results almost similar to 
Microbial source tracking using Bacteroides
gene targets and mitochondrial DNA has been reported to identify human (Haugland et al., 2010; Shanks, Kelty, Sivaganesan, Varma, & Haugland, 2009) and animal (Caldwell & Levine, 2009; Schill & Mathes, 2008) waste sources in surface water, but application of such microbial source tracking tools to groundwater investigations has been less frequently reported.
The bacterium Bacteroides
thetaiotomicron is almost exclusively found in the human gut.
Salmonella sp., Enterococcus sp., Streptococcus sp., and Bacteroides
spp.), was administered for an appropriate period of time, usually 3-5 days.
The pigs were also given one of three bacterial supplements the scientists developed from different strains of Bacteroides
ovatus, which had been obtained from human fecal samples and cultured in fiber-rich media.
The three enterotypes are each characterized by a discriminating genus, Bacteroides
(ET1), Prevotella (ET2), or Ruminococcus (ET3), whose abundance correlates with the abundance of other genera .
In microbiota, there are species with larger capacities for processing dietary polysaccharides, such as Bacteroides
, and they are more represented in lean subjects than in morbidly obese subjects.
 applied denaturing gradient gel electrophoresis (DGGE) to analyze intestinal microbiota from biopsy specimens obtained from three groups of children, investigating the composition of Bacteroides
, Bifidobacterium, and Lactic acid bacteria in duodenal biopsies of patients with active and treated coeliac disease.