A. Abood, S., ساجدة, M. Al-Dulaimee, H. and حكمت 2025. Effect of Folate Analogues on the Activity of Dihydrofolate Reductase and Seedlings, Callus Growth of Nigella Sativa L. Plant. Rafidain Journal of Science. 17, 5 (Jun. 2025), 1–13. DOI:https://doi.org/10.33899/rjs.2006.42804.