Placental and fetal disposition of mercuric ions in rats exposed to methylmercury: Role of Mrp2

► After exposure to methylmercury, accumulation of mercuric ions is greater in TR− than Wistar rats. ► The disposition of mercuric ions in adult TR− and Wistar rats implicates Mrp2 in mercury transport. ► Fetal and placental burdens of mercury suggest a role for Mrp2 in the disposition of mercuric ions.