Low levels of methylmercury induce DNA damage in rats: protective effects of selenium - Grotto, Denise; Barcelos, Gustavo Rafael Mazzaron; Valentini, Juliana; Antunes, Lusânia Maria Greggi; Angeli, José Pedro Friedmann; Garcia, Solange C.; Barbosa Júnior, Fernando (Archives of Toxicology, 2009)