IDO1 and ganglioneuroma: We therefore determined the presence of GN, mesangial proliferation, IgG-, and IgM-IC deposition and subsequent complement fixation to kidney glomeruli in B6.Nba2, B6.Nba2 treated with 1-d-MT, B6.Nba2.IDO1−/−, and B6.Nba2.IDO1−/− treated with 1-d-MT.