@article{heneine_rocha_cassali_1994,  title={The effect of cholera toxin and its toxoid on ileal loops of the rat},  volume={89},  ISSN={0074-0276},  url={https://doi.org/10.1590/S0074-02761994000100021},  DOI={10.1590/S0074-02761994000100021},  number={1},  journal={Memórias do Instituto Oswaldo Cruz},  publisher={Instituto Oswaldo Cruz, Ministério da Saúde},  author={Heneine, Ibrahim Felippe and Rocha, Orivaldo A. and Cassali, Geovanni D.},  year={1994},  month={Jan},  pages={117–117} }