“…Interestingly, a further subset of immune cells, group 3 innate lymphoid cells (ILC3s), has also been shown to play a major role in gut mucosal immunity and inflammation 15, 16, 17. ILC3s are a group of lymphocytes without T‐cell‐specific antigen receptors with particular accumulation at mucosal sites and serve as key regulators during intestinal inflammation 18, 19, 20, 21. ILC3s can rapidly respond to external stimuli and play critical roles in host defense, the resolution of inflammation and initiation of tissue repair in the gut 21, 22, 23, 24, 25, 26.…”