Ding-ping B, Cheng-jiang Y, Yu-lin C. Association between AA-NAT gene polymorphism and reproductive performance in sheep. Electron. J. Biotechnol. [Internet]. 2012 Feb. 28 [cited 2024 Nov. 24];15(2). Available from: https://www.ejbiotechnology.info/index.php/ejbiotechnology/article/view/v15n2-6