Protective Effect of Broccoli, Onion, Carrot, and Licorice Extracts against Cytotoxicity of N-Nitrosamines Evaluated by 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium Bromide Assay

1. Martínez, A.
2. Cambero, I.
3. Ikken, Y.
4. Marín, M.L.
5. Haza, A.I.
6. Morales, P.