Detection of Pathogenic Strains of Entamoeba histolytica in children Using ELISA Technique in Duhok A Thesis submitted to the council of the College of Medicine, Duhok University in partial fulfillment of the requirements for the Degree of Master In Microbiology (Parasitology) By Shameeran Salman Ismael (B.V.M.S., University of Duhok, 2007) Supervised by Dr. Waleed Jameel Omar Barwari 2010 A.D 2710 K 1431 A.H