To investigate the mechanism of uveitis attenuation in C57Bl/6J EAU mice treated with oral SCFAs, we performed flow cytometry analysis to examine the frequency of regulatory T lymphocytes expressing FoxP3 and Helios in intra- and extra-intestinal lymphoid tissues: cecal and colonic lamina propria lymphocytes (LPL), cervical lymph nodes (CLN), mesenteric lymph nodes (MLN), and spleen (SPN). This evidence concerns the gene FOXP3 and uveitis.