[1] South Valley Univ, Dept Pathol & Clin Pathol, Fac Vet Med, Qena 83523, Egypt
[2] Kafr Elsheikh Univ, Dept Pathol, Fac Vet Med, Kafr Al Sheikh 33516, Egypt
[3] Assiut Univ, New Valley Branch, Dept Fish Dis & Mangment, Fac Vet Med, El Kharja 72511, Egypt
[4] Gifu Univ, United Grad Sch Vet Sci, Dept Pathogenet Vet Sci, 1-1 Yanagido, Gifu 5011193, Japan