摘要: Autoimmune hepatitis is a chronic of unknown etiology characterized by clinical, histological, and immunological features, generally including circulating autoantibodies high total serum and/or gamma globulin. Liver-related are very significant for the correct diagnosis classification autoimmune liver diseases (AILD), namely types 1 2 (AIH-1 2), primary biliary cirrhosis (PBC), sclerosing cholangitis in adults children. This article intends to review recent studies that investigate from microbiological perspective.