Document Type : Original Research Papers
Authors
1 Bacteriology, Immunology and Mycology Dept., Faculty of Veterinary Medicine, Benha Univ., Benha, Egypt
2 Reference Laboratories for Veterinary Quality control on poultry production, Animal Health Research Institute, Egypt
3 Bacteriology, Immunology and Mycology Dept., Faculty of Veterinary Medicine, Beni Suif Univ., Beni Suif, Egypt