helicobacter hepaticus helicobacter hepaticus helicobacter hepaticus is a bacterium in the helicobacteraceae family, campylobacterales order. helicobacter hepaticus scientific classification domain: bacteria phylum: campylobacterota class: "campylobacteria" order: campylobacterales family: helicobacteraceae genus: helicobacter species: h. hepaticus binomial name helicobacter hepaticusfox et al., 1994 it has a spiral shape and bipolar, single, sheathed flagellum, and was first isolated from the livers of mice with active, chronic hepatitis. the bacteria also colonized the cecal and colonic mucosae of mice. it elicits persistent hepatitis in mice. it has also been associated with colorectal cancer and other diseases. its genome has been sequenced and is 1,799,146 bases long with 1,875 coding sequences.