It has a spiral shape and bipolar, single, sheathed flagellum. The bacterium was first isolated from the livers of mice with active, chronic hepatitis. Other organs the bacterium colonize include the cecal and colonicmucosae of mice. It elicits persistent hepatitis in mice and has been associated with colorectal cancer and other diseases.[2][3] Its genome has been sequenced and is 1,799,146 bases long with 1,875 coding sequences.[4]