Farida T. El-Hissy, Mortada S.M. Nassar, A.M. Khallil and Fatma F. Abdel-Motaal
Journal of Biological Sciences 1 ( 9 ): 854 - 858 , 2001
Mortada S. M. Nassar, A. M. Khallil, Farida T. El-Hissy and Fatma F. Abdel-Motaal
Journal of Biological Sciences 2 ( 2 ): 124 - 129 , 2002