Keneisenuo, K.The first author is pursuing Ph.D. (Veterinary Anatomy and Histology) from the College of Veterinary Science, Guwahati, Assam, India. O. P. Choudhary is working as an Assistant Professor in the Department of Veterinary Anatomy and Histology at the College of Veterinary Sciences and Animal Husbandry, Central Agricultural Univ. (I), Aizawl, Mizoram.