Effect of annatto on micronuclei induction by direct and indirect mutagens in HepG2 cells - Barcelos, Gustavo Rafael Mazzaron; Angeli, José Pedro Friedmann; Serpeloni, Juliana Mara; Rocha, Bruno Alves; Mantovani, Mário Sérgio; Antunes, Lusania Maria Greggi (Environmental and Molecular Mutagenesis, 2009)