1. Laboratory of Animal Cell Biology and Embryology, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province 210095, China
2. Faculty of Veterinary and Animal Sciences, LUAWMS, Uthal 90150, Pakistan
3. Faculty of Animal Husbandry and Veterinary Sciences, Sindh Agriculture University, Tando Jam 70060, Pakistan