Glutathione improves testicular spermatogenesis through inhibiting oxidative stress, mitochondrial damage, and apoptosis induced by copper deposition in mice with Wilson disease ScienceDirect Semen naturally contains antioxidants to prevent cell damage due to chain reactions involving unpaired Sperm., Semen contain two main antioxidants such as enzymatic antioxidants and glutathione Cysteine improves boar sperm quality via glutathione biosynthesis during the liquid storage Frontiers Analysis of research trends (2014 2023) on oxidative stress and male fertility based on bibliometrics and knowledge graphs