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Citrobacter rodentium

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IL-22–producing T cells can strongly and continuously activate enterocytes because they are located right next to them. However, it’s not exactly known how T cells help IECs or which epithelial cell groups are affected. It's also not clear why Citrobacter rodentium infection only happens in the mid to distal part of the large intestine.
Higgins et al. 1999 Infect Immun 67: 3031-3039
Mangan et al. 2006 Nature 441: 231-234
Basu et al. 2012 Immunity 37: 1061-1075
Zindl et al. 2024 Nature 629: 669-678

There is a specific type of cell in the colon. These cells are only in the middle to end part of the colon. Citrob…