Effect of Splenectomy on Blood Picture in Children with Thalassemia Major Ahmed Adel Fathy Mohamed(Assistant Researcher at NRC), Gamal Sami Ali(Professor of pediatrics at FPGS), M. Khaled El-Menabbawy (Professor at NRC), Fatma A. Elzaree(Researcher at NRC), Reham Sabrey Abdel Aal(Lecturer of pediatrics at FPGS).