Document Type : Research article
Authors
1 Dept. of Microbiology and Obstetrics, Gynaecology and A.1., Faculty of Vet. Med., Cairo university
2 Dept. of Microbiology and Obstetrics, Gynaecology and Faculty of Vet. Med., Cairo university
3 Dept. of Microbiology and Obstetrics, Gynaecology and Faculty of Vet. Med., Cairo university,
Abstract