Gohain, Chukham, et al. “SNP1 (G-1539A) of Toll- Like Receptor 4 Gene Polymorphism in Indigenous Cattle of North East India Vis-a-Vis Crossbred Cattle”. International Journal of Livestock Research, vol. 8, no. 12, Dec. 2018, pp. 58-63, http://ijlr.org/ojs_journal/index.php/ijlr/article/view/1443.