General Information: Isolation: Rectal tumor; Temp: Mesophile; Temp: 37C; Habitat: Blood, Host, Human intestinal microflora. Eggerthella lenta DSM 2243, formerly Eubacterium lentum, is a normal member of human gastrointestinal flora. This organism has been isolated from cases of bacteremia. Gram positive, obligately anaerobic bacteria isolated from the human gastrointestinal tract.