Zhao, Yan-Ling, Shan-Zheng Li, and Zi-Li Ren. “Effects of Astragalus Polysaccharides on the Quality of Frozen-Thawed Tibetan Boar Spermatozoa and Levels of Genomic DNA Methylation in the Sperm”. The Thai Journal of Veterinary Medicine 50, no. 4 (November 30, 2020): 467–472. Accessed April 25, 2024. https://he01.tci-thaijo.org/index.php/tjvm/article/view/246312.