“…It is a rapid, simple, and very sensitive test, which facilitates the evaluation of DNA damage and repair on single cells [Collins, 2004], and is one of the most used methods in biomonitoring studies of the genotoxic effects on blood lymphocytes [Maluf and Erdtmann, 2000;Faust et al, 2004;Cavallo et al, 2002aCavallo et al, , 2002bCavallo et al, , 2005Cavallo et al, , 2006aCavallo et al, , 2006bMoller, 2006, Speit andHartmann, 2006;Ursini et al, 2006]. The comet assay is able to sensitively reveal early, still repairable, moderate DNA damage, and can therefore furnish useful information on early effects induced by occupational exposure to low doses of xenobiotics.…”