Lebdah, M., Nassif, S., Shahein, A., El-Basrey, Y. (2017). 'Isolation and Identification of Very Virulent Strains of Marek’s Disease Virus from MDVVaccinated Flocks in Egypt', Zagazig Veterinary Journal, 45(3), pp. 197-205. doi: 10.21608/zvjz.2017.7947