TLR2 on CD4 + T cells is required for B. fragilis colonization of a unique mucosal niche in mice during homeostasis. (science.sciencemag.org)
For instance, Bacteroides fragilis lacking OmpA are more sensitive to SDS, high salt, and oxygen exposure (Wexler et al, 2009). (msb.embopress.org)
My husband and I picked up a parasite called Dientamoeba fragilis from eating sushi at a restaurant years ago (obviously the food preparer was not following proper hand washing hygiene!). (fermented-foods.com)