Hepatitis C virus contributes to aggravation of the immunosuppressive environment by increasing the suppressive activity of natural regulatory T cells. - Ouaguia, L.; Moralès, O.; Wychowski, C.; Carpentier, A.; Aoudjehane, L.; Dubuisson, J.; Calmus, Y.; de Launoit, Y.; Conti, F.; Delhem, N. (Journal of Clinical Virology, 2015)