Document Type : Original Article
Authors
1 Microbiology Dept., Fac. of Vet. Med., Zagazig Univ., Egypt.
2 Bacteriol., Mycol., & Immunol, Dept., Fac. Vet. Med., Kafrelsheikh Univ., Egypt.
3 Animal Health Research Institute (Dokki, Giza Lab. )
4 Animal Health Research Institute (Kafrelsheikh Lab. )
Abstract
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