1. 1) Kawamoto, S., et al.: Foxp3(+) T cells regulate immunoglobulin a selection and facilitate diversification of bacterial species responsible for immune homeostasis. Immunity. 41: 152-165, 2014.
2. 2) Tsuji, N.M., Kosaka, A.: Oral tolerance: intestinal homeostasis and antigen-specific regulatory T cells. Trends Immunol. 29: 532-540, 2008.
3. 3) Kamada, N., et al.: Humoral Immunity in the Gut Selectively Targets Phenotypically Virulent Attaching-and-Effacing Bacteria for Intraluminal Elimination. Cell Host Microbe. 17: 617-627, 2015.
4. 4) Tanaka, K., Ishikawa, H.: Role of intestinal bacterial flora in oral tolerance induction. Histol Histopathol. 19: 907-914, 2004.
5. 5) Herbst, T., et al.: Dysregulation of allergic airway inflammation in the absence of microbial colonization. Am J Respir Crit Care Med. 184: 198-205, 2011.