Sunarno, Wasmen Manalu, Nastiti Kusumorini, and Dewi Ratih. “Improvement of Function in the Aging Rat Hippocampus by Administration of Alanine-Glutamine Dipeptide As a Precursor of the Antioxidant Glutathione”. Pakistan Journal of Nutrition 14, no. 11 (October 15, 2015): 749–757. Accessed August 26, 2025. https://pjnonline.org/pjn/article/view/2215.