A.M. Zaahkouk Samir, A. Darwish Doaa, M.M. Masoud Hassan, M. Abdel-Monsef Mohamed, S. Helmy Mohamed, S. Esa Sayed, M. Ghazy Abdel-Hady, A. Ibrahim Mahmoud, Purification and Characterization of Xanthine Oxidase from Liver of the Sheep (Ovis Aries), Journal of Antioxidant Activity, Volume 1, Issue 4, 2019, Pages 8-18, ISSN 2471-2140, https://doi.org/10.14302/issn.2471-2140.jaa-19-2699. (https://openaccesspub.orgjaa/article/1040) Keywords: Xanthine oxidase; Purification; Characterization; Sheep liver