Om Prakash Choudhary1, Indraj Singh2. 1. Department of Veterinary Anatomy and Histology, College of Veterinary Sciences and Animal Husbandry, Central Agricultural University (I), Selesih, Aizawl, 796015, Mizoram, India. Electronic address: dr.om.choudhary@gmail.com. 2. Community Health Centre, Deoband, Saharanpur, 247554, Uttar Pradesh, India.