1 Infection with a helminth parasite attenuates autoimmunity through TGF-β-mediated suppression of Th17 and Th1 responses 1 Miriam T. Brady *2,3 , Kevin P. Walsh *2 , Louis Boon † and Kingston H. G. Mills* 4 * Immune Regulation Research Group, School of Biochemistry and Immunology, Trinity College, Dublin 2, Ireland, † Bioceros BV, Utrecht, The Netherlands. Running title: Regulation of autoimmunity by helminth infection Keywords: Th1/Th2 cells, Infection – parasitic-helminth, tolerance/suppression/anergy, autoimmunity