A. ABOOD, S.; M. AL-DULAIMEE, H. Presence of Dihydrofolate Reductase in Seedlings and Callus of Nigella Sativa L. Plant. Rafidain Journal of Science, [S. l.], v. 17, n. 2, p. 26–38, 2006. DOI: 10.33899/rjs.2006.43322. Disponível em: https://jamh.uomosul.edu.iq/index.php/rsci/article/view/46912. Acesso em: 29 sep. 2025.