Abdallah, H., هناء, Albaker, R. and رحاب 2005. The role of Pentadienoic growth regulator acid by number of growth regulators in the initiation, growth and differentiation of Nigella sativa Callus. Journal of Education and Science (JES). 17, 3 (Jun. 2005), 80–90. DOI:https://doi.org/10.33899/edusj.2005.81501.