- Induction of cytochrome P450, generation of oxidative stress and in vitro cell-transforming and DNA-damaging activities by glucoraphanin, the bioprecursor of the chemopreventive agent sulforaphane found in broccoli. Paolini, M., Perocco, P., Canistro, D., Valgimigli, L., Pedulli, G.F., Iori, R., Croce, C.D., Cantelli-Forti, G., Legator, M.S., Abdel-Rahman, S.Z. Carcinogenesis (2004)