Affiliation: | 1. Department of Anatomy, Faculty of Veterinary Medicine, University of Khartoum, Khartoum, Sudan Department of Anatomy and Molecular Embryology, Ruhr University Bochum, Bochum, Germany;2. Department of Animal Breeding and Genetics, University of Khartoum, Khartoum, Sudan Department of Animal Breeding, Faculty of Organic Agricultural Sciences, University of Kassel, Witzenhausen, Germany;3. Department of Anatomy and Molecular Embryology, Ruhr University Bochum, Bochum, Germany |