@article{article936cff96,
title   = {Vitamin A and 'beta'-carotene inhibitory effect during 1,2-dimethylhydrazine induced hepatocarcinogenesis potentiated by 5-azacytidine},
author = {Sampaio, Alda Regina Diniz and Chagas, Carlos Eduardo Andrade and Ong, Thomas Prates},
year = {2007},
doi = {10.1016/j.fct.2006.10.001},
journal   = {Food and Chemical Toxicology}
}