الفهرس 
Materi11l and MethodsOnly 14 pages are availabe for public view
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Abstract
I wish to offer my smcere thanks and gratitude to
Professor Dr. Samira Mahmoud Hassan, Professor of
Pharmacology, Faculty of Medicine, Ain Shams University, for
gtvmg me the honor of working under her supervision, her kind
continuous guidance, persistent efforts, continuous
encouragement, valuable help and her keen interest throughout
the present work.
I am also thankful to Professor Dr. Hoda A btl El Gale/
Salam, Professor of Pharmacology, Faculty of Medicine, Ain
Shams University, for her sincere help and great cooperation.
I am also much obliged and deeply indebted to Dr. Lai/a
Allllnl Beslleer, Assistant professor of Pharmacology, Ain
Shams University, who gave me much of her time, her
expenence, her patience with valuable assistance and