N. Ghanem, S. and A. Abood, S. 2019. Diode Laser Radiation Effects in Initiation and Growth of Sun Flower Plant (Helianthus annuus L.) Callus. Rafidain Journal of Science. 28, 1 (Mar. 2019), 24–34. DOI:https://doi.org/10.33899/rjs.2019.159402.