Adult male rats were treated intraperitoneally or orally with fluorene at 0, 1, 10 or 100 mg/kg/day during 60 days.
Lower levels of anxiety were observed in rats treated with 1 and 10 mg/kg/day of fluorene.
Less significant weight gain and increases in relative liver weight were noticed.
Higher levels of fluorene and its metabolites were measured in blood and brain of i.p.-treated rats.