AHR and colitis: The positive effect of AHR agonists in colitis models has also been proved (Benson and Shepherd, 2011; Furumatsu et al., 2011; Monteleone et al., 2011; Singh et al., 2011; Huang et al., 2013; Qiu and Zhou, 2013; Hanieh, 2014; Ji et al., 2015; Park et al., 2015; Aoki et al., 2018; Lv et al., 2018a; Lv et al., 2018b; Wang et al., 2018; Yu et al., 2018; Marafini et al., 2019; Singh et al., 2019; Chen et al., 2020; Liu et al., 2020; Lin et al., 2023).