Document Type : Original Article
Authors
1 Deratment of bacteriology , immunology and mycology , Fac. Vet. Med. Benha Univ.
2 Department of Bacteriology, Immunology and Mycology, Faculty of Veterinary Medicine, Benha University, Egypt
3 The Reference Lab. for Veterinary Quality Control on Poultry Production, Animal Health Institute – Dokki– Giza.
4 Animal Reproduction Research Institute, Giza, Egypt
Abstract
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