Development of a bioassay to quantify the ricin toxin content of castor bean (Ricinus communis L.) seeds - doi: 10.4025/actasciagron.v34i4.11284. Acta Scientiarum. Agronomy, [S. l.], v. 34, n. 4, p. 397–402, 2011. DOI: 10.4025/actasciagron.v34i4.11284. Disponível em: https://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/11284. Acesso em: 31 maio. 2026.