ITGAX and rheumatoid arthritis: Butyrate-treated RA DCs showed decreased CD11c (CD11c is an important DC biomarker) but increased CD103 (a biomarker for mucosal DCs in mesenteric lymph nodes and parts of the lamina propria of the colon) and integrin α four β 7 (a β integrin expressed on mucosal lymphocytes, NK cells and eosinophils involved in lymphocyte homing to Peyer’s patches and lamina propria in the gut) levels.