Soad M. Abdel-Gawad - Al Azhar University
M. M. Ghorab - Department of Drug Radiation Research, National Center for Radiation Research and Technology, P.O. Box 29, Nasr City, Cairo, Egypt
A. M. Sh El-Sharief - Al Azhar University
F. A. El-Telbany - Cairo University
M. Abdel-Alla - October 6 University